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Apr 2024 DOI 10.14302/issn.2576-9383.jhhr-24-4960
Hanai ToshihikoCorresponding author
The binding strength of Covid-19 variants, Omicron BQ.1, XBB.1.5, XBB 1.16, FE.1, EG.5, BA.2.86, HV.1, and JN.1, with the ACE-2, was calculated insilicoand evaluated with previous variants; the binding strength of new variants is XBB.1.5 << BA.2.86 < Delta < JN.1 < HV.1 < BA.1 << BA.2. The binding strength of Omicron JN.1 was similar to that of Delta, and that of others was less than that of BA.2.86. The binding inhibition of natural polyphenols was analyzed using a popular Omicron JN.1. The natural polyphenols were (-) Catechin, (+) Catechin, (+) epicatechin, apigenin, apigetrin, daidzein, quercetin, genistein, and oleuropein. The ionization of phenolic hydroxy groups was defined based on the atomic partial charge of oxygen. Polyphenols’ ionized hydroxy groups inhibited the binding of JN.1 S-RPB with ACE-2.
Apr 2023 DOI 10.14302/issn.2471-2140.jaa-22-4251
Kumari SachinCorresponding author
The study's goal was to determine the total phenolics, total flavonoids, and antioxidant activity of A. mexicana aerial parts. Extracts were prepared using different solvents namely n-hexane, ethyl acetate, acetone, methanol, and water on basis of increasing polarity using soxhlet appratus. Aqueous extract from the flower contained the highest level of total phenolics, followed by that of the stem and leaves. The flower methanol extract was found to contain the most total flavonoids. With IC50 values of 24.98 g/ml in acetone extract, the stem component demonstrated the most DPPH (1,1-diphenyl-2-picrylhydrazyl) free radical scavenging activity, followed by leaves with IC50 values of 36.29 g/ml in hexane extract and flowers with IC50 values of 38.33 g/ml in acetone extract. FTIR analysis showed that the presence of phenols and flavanoids. In different solvents, the DPPH free radical scavenging activity of aerial portions of A. mexicana varied greatly, and it increased with increasing concentration levels. In terms of antioxidant potency, higher amounts of total phenolics in aqueous extract, total flavonoids in methanol extract, and acetone extract were shown to be the most potent antioxidant. The aerial parts of A. mexicana have a considerable amount of flavanoids, phenolics, and antioxidant activity.
Sep 2021 DOI 10.14302/issn.2639-3166.jar-21-3955
Masoero GiorgioCorresponding author
Accademia di Agricoltura di Torino, Via A. Doria 10, 10123 Torino (Italy).
In the cultivation of vines the risk of hail appears to be increasing with the ongoing climate change. The use of protective plastic nets is spreading, but there is little knowledge on the additional processing costs and on the phenological and qualitative consequences, moreover, as depending on different colors of the nets. Thus, a randomized trial was carried out in Nebbiolo, a wine of great aging, testing three plastic anti-hail nets colored in green, gray and black. Results showed that 24% more-time was necessary for the canopy management practices under the nets. The black nets advanced the ripening process, with a berry weight decrease of about 13%. A significant decrease in the seed number per berry was observed under the black nets (-45%), while a rise (+102%) was observed under the green and gray nets with a parallel increase in the pH of the juice (+13%) and in malic acid (+28%) under the green nets. The berry skin did not show any significant differences in polyphenol and anthocyanin profiles, while the plants that matured in the upper part of the vineyard showed higher level in the berry skin extractable flavan-reactive to vanillin, and total polyphenol. On the other hand, in the seeds grown under green nets an increase in the extractable polyphenol compounds was observed, sign of a delay in seed ripening, with a higher tannin polymerization ratio, preserving the malic acid, and decreasing the acidity of the berry. In conclusion, the use of colored green may be a useful tool against excessive microclimatic warming and / or irradiation. The field internal variability affects much more the ripening dynamics than the nets used. A second aim was to develop a smart NIR SCiOTM model for polyphenols and the results were in line with the favorable expectations, providing R2 predictions of about 0.74 from the skin and 0.81 from the seeds.
Jul 2020 DOI 10.14302/issn.2471-2140.jaa-20-3478
R.A. Mans DennisCorresponding author
Department of Pharmacology, Faculty of Medical Sciences, Anton de Kom University of Suriname, Paramaribo, Suriname
Plant-based preparations are commonly used in Suriname (South America) as adaptogens. In this study, fifteen alleged adaptogenic Surinamese plants have been assessed for their antioxidant activity (AA), total phenolic contents (TPC), and total flavonoid contents (TFC). The investigated plants were Anacardium occidentale, Spondiasdulcis, Annona muricata, Euterpe oleracea, Oenocarpus bacaba, Luffa acutangula, Punicagranatum, Malpighia emarginata, Syzygiumaqueum, Syzygiumcumini, Averrhoa carambola, and Renealmiaalpinia (fruit); Hibiscus sabdariffa (calyx); as well as Aloe vera and Cestrum latifolium (leaf). Aqueous extracts (1 - 3,000 μg/ mL) were prepared. AA was determined by the FRAP and the DPPH assay. TPC and TFC were determined by the Folin-Ciocalteu’s and an AlCl3 colorimetric method, respectively, using gallic acid (GA) and rutin (R), respectively, as standards. Data are means ± SDs (n ≥ 3; P < 0.05). FRAP values and DPPH-scavenging activities correlated positively with each other and with TPC but not with TFC. The preparations from M. emarginata, A. carambola, A. occidentale, O. bacaba, C. latifolium, and H. sabdariffa displayed the highest FRAP values (54 ± 14 to 412 ± 30 µM Fe2+/100 μg), DPPH-scavenging activities (IC50 values of 33 ± 14 to 250 ± 50 μg/mL), and TPC (51 ± 4 to 280 ± 78 µM GAE/100 µg). TFC of all samples were ≤ 10 ± 3 RE/100 µg. The adaptogenic properties of these plants may (partially) be attributed to their high content of antioxidant phenolic compounds and may make them candidates of novel sources of health-promoting antioxidants.
Jan 2020 DOI 10.14302/issn.2379-7835.ijn-19-3144
Q. Almulaiky YaaserCorresponding author
Chemistry Department, Faculty of Sciences and Arts, University of Jeddah, Khulais, P.O. Box 355, Khulais, 21921, Saudi Arabia
In this study, the antioxidants and photosynthetic compounds of Verdolaga were examined. Compounds were extracted from distinctive segments of the verdolaga using various solvents such as methanol (40, 60, 80%), ethanol (40, 60, 80%), acetone (40, 60, 80%), and deionized water. The use of 80% methanol led to the highest extracted concentration of phenolic substances and flavonoids. The extracted products (Leaves, Stem strips, and Root strips) were evaluated for their radical scavenging capabilities with DPPH (IC50= 22.26, 20.56, and 32.10), and ABTS (IC50= 2.86, 3.70, and 5.24), reducing power (EC50= 15.70, 16.39, and 21.69), and peroxide scavenging activity (1C50= 1.717, 2.937, and 3.255), respectively. The extracted products were analyzed by a gas chromatography-mass spectrometer. Peroxidase, catalase, and polyphenol oxidase assays were completed for the crude extract of verdolaga’s leave, stem strips, and root strips. As indicated by these tests, extracts of the verdolaga’s roots, stems and leaves using 80% methanol yielded high antioxidant activity. The most elevated concentrations of extracted chlorophyll, lycopene, and carotenoids were from the leaves and the highest concentration of extracted tannin was noted from strips of stems. The highest measures of peroxidase and polyphenol oxidase were identified in root strips and the highest units of catalase was identified in leaves.
Mar 2018 DOI 10.14302/issn.2575-1212.jvhc-18-2012
A Halawa AmalCorresponding author
Department of Forensic Medicine and Toxicology, Faulty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
Bisphenol A (BPA) is an endocrine disruptor with a weak estrogenic effect used in industry as a component of food cans. We aimed to study the toxic effects of BPA on mRNA expression of steroidogenic genes and testicular structure in mature male rats. Animals were divided into 3 groups: vehicle control rats as first group, while second group received 10 µg/kg BW and third group received BPA 15 µg/kg BW orally every alternate day for a period of 105 successive days. Serum testosterone level, mRNA expression of genes related to steroid synthesis, histopathological examination, spermatogenesis index and number of Leydig cells were evaluated in this study. Lower serum hormone levels were observed in both BPA-treated groups as compared to the control group. The gene expression patterns of steroidogenic acute regulatory protein (StAR), cytochrome P450 17a(CYP17a) and 3β-Hydroxysteroid dehydrogenase (3β-HSD) were significantly down-regulated in BPA-treated rats compared to control group. Meanwhile, the expression of aromatase (CYP19) and lutinizing hormone receptor (LHR) was significantly up-regulated. Histopathological lesions were observed in the testes and epididymis of BPA-treated rats. Spermatogenesis index and the number of Leydig cells were significantly decreased in BPA-treated groups compared with the control group. This study highlights negative effect of BPA on steroidogenic genes and testicular structure in male rats.
May 2015 DOI 10.14302/issn.2379-7835.ijn-14-590
Jhaumeer Laulloo SCorresponding author
Department of Chemistry, University of Mauritius
The raw sunflower oil (SFO) has an undesirable flavour and odour. Therefore, to make it suitable for human consumption, the oil has to undergo a number of refining processes such as degumming, neutralization, bleaching and deodorization. During these refining processes, some of the phytochemicals present in SFO is lost. The aim of this study is to evaluate the loss in total phenolic, flavonoid and non-flavonoid contents and the antioxidant properties of the oil at the different chemical refining stages. The crude SFO oil has the highest total phenolic, flavonoid and non-flavonoid contents. The amount of phenolic compounds decreases as the oil undergoes different chemical refining processes. Results of this study indicated that the highest percentage loss of the phenolic compounds occurred during the deodorizing step.The statistical loss of the deodorized oil was 41.7, 63.9 and 27.6 % for total phenolic, flavonoid and non-flavonoid contents respectively. The free scavenging activity of sunflower oil was determined using DPPH and ABTS assays. The percentage scavenging activity ranged from 55.64 to 35.87 % for the DPPH assay while for ABTS assay the activity ranged from 59.46 to 31.43 % in a 50 mg/ml of SFO sample. This showed a decrease in antioxidant activity from crude to DNW to bleached and deodorized oil. The crude oil having the highest phenolic contents showed the highest antioxidant activity in both DPPH and ABTS assays.
Apr 2026 DOI 10.14302/issn.2641-9467.jgrc-26-6123
Jana SnehasisCorresponding author
The objective of this study was to improve the growth and yields of bottle gourd plants after exposure with spiritual blessing energy treatment (SBET) to the seeds and land. Twenty-one morphological traits of leaves, fruit, seed, and twenty-eight phenological parameters were employed to evaluate bottle gourd’s growth and yields after SBET. Results of bottle gourd showed a diversifiable characteristic of leaves, fruits, and seeds. Nine qualitative traits exhibited with distinct differences in the biofield-energy treatment group compared to the control. At harvest, growth-related phenological parameters such as plant vine length, number of branches, internodal length, and leaf width were significantly improved in the treatment group by 65.43% (p ≤ 0.001), 51.78% (p ≤ 0.01), 49.40% (p ≤ 0.001), and 40.82% (p ≤ 0.001), respectively, compared to the control. Additionally, yield-related parameters such as number of female flowers, number of fruits per vine, and fruit yield per hectare were significantly increased by 47.73% (p ≤ 0.05), 26.52% (p ≤ 0.001), and 38.99% (p ≤ 0.05), respectively, with respect to the control. With distinct qualitative variations and high statistical significance, these results suggest that SBET may serve as a potent non-traditional intervention for optimizing phenological development and agricultural output of bottle gourd.
Mar 2026 DOI 10.14302/issn.3070-2232.jf-26-6051
Jana SnehasisCorresponding author
Objective Bitter gourd (Momordica charantia L.) is a widely consumed vegetable. This study aimed to assess the impact of spiritual blessing (biofield) energy treatment (S/BET) known as the Trivedi Effect® on a plant’s growth and yield when applied to both seeds and soil. Methods Seeds were split into two groups: an untreated control group (CONBIGG) and a BET-group (BTBIGG). Soil texture was checked by hand, and mineral contents were measured using standard procedures. An experienced scholar noted plant morphological, phenological, and yield-related parameters. Results The S/BET group showed improvements in stem length, fruit colour, and seediness compared to the control. Other phenological parameters, such as vine length (38.78 %; p ≤ 0.001), branch number (54.03 %; p ≤ 0.01), inter-nodal length (42.94 %; p ≤ 0.001), fruit length (33.27 %; p ≤ 0.001), seed length (40.32 %; p ≤ 0.001), seeds per fruit (52.50 %; p ≤ 0.001), and fruits per vine (66.88 %; p ≤ 0.001), were significantly increased in the BTBIGG group compared to the CONBIGG. Yield per hectare rose by 61.31 % in the S/BET group compared to the control. Conclusion The study results suggest that the spiritual blessing/prayers/BET-Trivedi Effect® significantly improved morphological, phenological, and yield-related parameters compared to the control group. This study provides useful scientific research data and information for producing stable, high-quality bitter gourds.
Jul 2023 DOI 10.14302/issn.2639-3166.jar-23-4648
Masoero GiorgioCorresponding author
The purpose of the trial was to check the effects of two grapevine treatments on the plant activity and on the bioactivity and biovariability of the soil. An alkaline complex of Soluble Biobased Substances (SBS) was used in soil at 30 g per plant in a single solution. Salicylic Acid (SA) was used on leaves at 150 mg l-1 every two weeks at 50 ml plant. The plants were examined for their foliar pH and NIR spectra. The soil bioactivity was monitored by means of hay-Litterbag-NIRS (LBN) in combination with the Teabag Index (TBI), using rooibos and green tea that had been buried for 60 days. The evolution of the TBI presented here concerns the TBI-NIRS spectroscopic method used for discriminant analysis. A new algorithm was used to estimate the soil microbiome from the green Teabag spectra. The obtained results showed that the plants and the soil responded to the treatments. In fact, SBS, but not SA, lowered the leaf pH by 5%, an unexpected and original result. Both treatments increased the variability of the leaf composition, with a lower discrimination, based on the NIR spectra, from the Control (75%) to 44% (SA) and 38% (SBS). The TBI method, which is based on weights, was less efficient (67%) than the TBI-NIRS of rooibos (96%) or the LBN of hay (80%), but it was like the TBI-NIRS of green tea (74%). The LBN analyses indicated that the mycorrhizal index had increased by 8% in SA but had reduced by 7% in SBS, while both treatments reduced the activity of the microbes, which did not affect the soil respiration rate. The mineral N in the soil was substantially raised by about 11÷69%. The Taxa profiles showed marked deviations from the Control. Moreover, the SBS treatment reduced the Glomeromycota by 35%, which matched to the reduction in the mycorrhizal index. The most favored Bacteria from the treatments were Proteobateriaand Actinobacteria, with Mortierellomycota being the most penalized. Neither treatment affected the production, but both delayed the technological maturity by 9-11%, while the SBS retarded the phenolic maturity by about 18%. It has been concluded that a simple treatment of vines can affect the bioactivity in the leaves and berries as well as the biovariability of the soil.
Jun 2023 DOI 10.14302/issn.2377-2549.jndc-23-4615
Manickum ThavrinCorresponding author
A literature review was undertaken with a focus on 1) identifying the research gaps regarding CECs, 2) identifying the most common ones, and 3) identifying the typical analytical methods/technologies employed, for their analysis. A total of 214 papers were noted, with a total of 21 review articles (9.8%). Of this total, a surprisingly high number were from South Africa alone: 117 (54.7%), of which 44 (20.6%) reports were associated with South Africa’s Water Research Commission (WRC). The top three CECs research gaps were (decreasing rank: Number of “gaps”, %): 1) Toxicity/Risk/Impact (260, 21.5%), 2) Analysis/Tests/Methods (118, 9.8%) and 2) Future research/studies (118, 9.8%), and 3) Monitoring (89, 7.4%). The common classes of CECs that were reported on, were : (i) Chemical: pharmaceuticals, personal care products, steroids, chlorinated and brominated contaminants, PAHs, PCBs, phthalates, alkyl phenols, herbicides, organochlorine pesticides, engineered nanomaterials and (ii) “Microbiological”: antibiotic resistance genes, human enteric bacteria and viruses, microbial pathogens (e.g., E Coli, rotavirus, Crypto, etc.), infectious biological water contaminants (e.g., E Coli isolates), cyanobacterial blooms (Microcystis). Common test methods used for analysis of the chemical contaminants were found to be chromatography (gas, liquid)-mass spectrometry; for the microbial contaminants, they were culture-based methods, ELISA, fluorescence microscopy, qPCR, RT-qPCR, gel electrophoresis, Raman spectroscopy, and also chromatography (largely liquid)-mass spectrometry, were also used. Some proposals were additionally made to address the very common, significant research gaps noted in CECs research, especially the standardization of analytical chemical test methods, based on chromatography-mass spectrometry, for quantification.
May 2023 DOI 10.14302/issn.2574-4488.jna-23-4545
Papiashvili N.A.Corresponding author
This study aimed to analyze pharmacological actions of phenolic compound luteolin on the renal and cardiac hypertrophy, blood pressure (BP), baroreflex sensitivity (BRS), levels of epoxyeicosatrienoic acids (EETs), prostaglandin E-2 (PGE-2) and endothelin-1 (E1) in plasma in the 2 kidney - 1 clip (2K-1C) model of renovascular hypertension (RVH). All animals, were randomized into 2 groups: control (normal) I - sham-operated, II- RVH male Wistar rats, which after 4 weeks of surgical intervention secondly randomized to control II group, treated 0.1% dimethyl sulphoxide (DMSO) and main group - with luteolin in 15 DMSO, 3 mg/kg body weight, intraperitonially, during 2 weeks. ET-1, EETs and PGE2 levels investigated in carotid artery blood plasma and analyzed using ELISA kits. All data statistically analyzed using the SPSS-10.0 program. In RVH rats BP increased by 32%, cardiac and right kidney hypertrophy and reduction in parasympathetic component of BRS by 40% and sympathetic by 39%. The plasma level of total trans-EETs and PGE2 in RVH rats decreased by 44% and 50% respectively, while the level of ET-1 increased by 67%. Two weeks treatment with luteolin lowered BP, improved parasympathetic, without marked changes in sympathetic component of BRS. Deremodeling of cardiac and renal hypertrophy under prolonged treatment with luteolin accompanied with increasing in the level of EETs by 44%, PGE-2 by 50% and markedly reducing of plasma content of ET-1 (by 60%). Inhibition of EET hydrolase using low doses of luteolin provides beneficial cardio and renoprotective action in experimental model of RVH.
Dec 2021 DOI 10.14302/issn.2471-2140.jaa-21-4027
Singh SushilaCorresponding author
Department of Chemistry, CCS Haryana Agricultural University, Hisar, Haryana, India.
Medicinal plants have been used since the era of Vedic history for their health care system where herbal medicine has a long history of use. It is also a very popular medicinal plant belonging to the Leguminosae family and is commonly known as Mulhatti. It contains phytochemicals such as flavonoids, triterpene saponins and other constituents such as coumarins, sugars, amino acids, tannins, starch, choline, phytosterols etc. The present study was conducted for the estimation of phytochemicals (total phenols and flavonoids) and the evaluation of the total antioxidant capacity and DPPH free-radical scavenging activity in aqueous extracts of different pH (2, 4, 7 and 9) from aerial parts of Glycyrrhiza glabra L. The content of phenolic compounds was maximal at pH 7 (14.13 mg GAE/g) and flavonoids at pH 9 (4.90 mg CE/g) and the total antioxidant capacity was maximal at pH 9 (13.43 mg AAE/g) and free radical scavenging DPPH activity was highest at pH 7 (IC50 value = 60.48 µg/ml). Thus, the aerial part is a good source of phytochemicals and also acts as a good antioxidant.
Nov 2021 DOI 10.14302/issn.2641-4538.jphi-21-3993
Adenike Adeyemo-Salami OluwatoyinCorresponding author
Nutritional and Industrial Biochemistry Unit, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Oyo State, Nigeria.
Chlorogenic acid (CA), abundantly found in green coffee beans, is a phenolic compound with antioxidant and anti-inflammatory properties amongst others. Exposure to rotenone, a natural pesticide, induces Parkinsonism (a type of neurodegeneration) through the induction of mitochondria dysfunction and oxidative stress. Phytochemicals with antioxidant properties may be promising in attenuating this condition. In this research, the ameliorative role of CA on rotenone-induced toxicity in Drosophila melanogaster was evaluated. Drosophila melanogaster (Harwich strain, 1- 3 days old) was used. 6 groups of five vials each with 50 flies/vial were exposed to CA (0; control (2% ethanol), 7.5, 15, 30, 45 and 60 mg/kg diet) for 28 days in the longevity analysis. A 28-day survival assay was carried out with rotenone (0, 250 and 500 μM). CA (30 mg/kg diet) was selected to evaluate its ameliorative potential on rotenone. For the study, the flies were divided into four groups of five vials each and exposed to CA and rotenone; Group A- control (2% ethanol), Group B- CA only, Group C- rotenone only and Group D- CA (30 mg/kg diet)+ rotenone (500 μM)for 7 days. Thereafter, the homogenate was evaluated for oxidative stress status, rate of emergence, negative geotaxis and acetyl cholinesterase activity. CA (30 mg/kg diet) extended the lifespan of flies by 21.4%. Also, CA ameliorated rotenone-induced perturbation in catalase, glutathione-S-transferase and acetyl cholinesterase activities, total thiol and glutathione levels, and behavioral deficit (p < 0.05). CA may have ameliorative effect against rotenone-induced toxicity and Parkinsonism.
Nov 2021 DOI 10.14302/issn.2471-2140.jaa-21-3996
Singh SushilaCorresponding author
Department of Chemistry, CCS Haryana Agricultural University, Hisar, Haryana, India.
Plants are an important source of medicines since ancient times. The traditional system medicine’s use a variety of native plants to diagnose, prevent, and eliminate acute and chronic diseases.Asparagus racemosus(Willd.), also have been widely used for medicinal purpose and its extensively distributed in the tropics and subtropics of India, commonly known as Satawar, belongs to the family Asparagus. The purpose of this was to identify the phytochemicals and to assess the antioxidant potential in aqueous extracts prepared at different pH levels of Satawar tubers. The maximum amount of phenolics and flavonoids content was present at pH 9 i.e.18.88mg GAE/g and 2.83mg CE/g. The total antioxidant capacity was highest at pH 2 (15.96mg AAE/g) and IC50 values of DPPH free radical scavenging activity was the lowest at pH 7, 2582.85µg/mL. According to the whole study, this plant is a very good source of phytochemicals and acts as a powerful antioxidant.
Oct 2021 DOI 10.14302/issn.2471-2140.jaa-21-3960
Singh SushilaCorresponding author
Department of Chemistry, CCS Haryana Agricultural University, Hisar, Haryana, India.
When lipids are exposed to heat, light and oxygen, it leads to oxidation. The addition of antioxidants is required to preserve colour, flavour and vitamin destruction. Present study was, therefore, planned to investigate pod coat of pigeon pea as possible sources of natural antioxidants and to assess their efficacy in stabilization of crude soybean oil during normal storage (28 days at 50°C). Study revealed that acetone pod coat extract of pigeon pea showed richness in total phenolics (17.72 mg/g), flavonoids (9.00 mg/g) and tannins (2.21 mg/g) while the extract of ethyl acetate was found enriched in tocopherols content (9.56 mg/g). The IC50 value of acetone extract was found to be lowest, exhibited potent antioxidant activity in the 2,2-diphenyl-1-picrylhydrazyl (DPPH) and ferric thiocyanate (FTC) methods. After adding synthetic and natural antioxidants in oil, Peroxide, p-Anisidine, Thiobarbituric acid value, Conjugated dienes, trienes and free fatty acids content were measured every 4 days. Acetone pod coat extract (2000ppm) of pigeon pea gave strong antioxidant efficacy in stabilization of crude soybean oil and hence could be recommended as natural antioxidants for food applications.The research explored the possibility of using pod coat of pigeon pea as imminent sources of green antioxidants and to evaluate their efficacy in stabilization of crude soybean oil.
Jun 2021 DOI 10.14302/issn.2379-7835.ijn-21-3874
J. Johnson JeremyCorresponding author
University of Illinois at Chicago, College of Pharmacy, Department of Pharmacy Practice
Natural food preservatives in the form of herb extracts and spices are increasing in popularity due to their potential to replace synthetic compounds traditionally used as food preservatives. Rosemary (Salvia rosmarinus) is an herb that has been traditionally used as an anti-inflammatory and analgesic agent, and currently is being studied for anti-cancer and hepatoprotective properties. Rosemary also has been reported to be an effective food preservative due to its high anti-oxidant and anti-microbial activities. These properties allow rosemary prevent microbial growth while decreasing food spoilage through oxidation. Rosemary contains several classes of compounds, including diterpenes, polyphenols, and flavonoids, which can differ between extracts depending on the extraction method. In particular, the diterpenes carnosol and carnosic acid are two of the most abundant phytochemicals found in rosemary, and these compounds contribute up to 90% of the anti-oxidant potential of the herb. Additionally, several in vivo studies have shown that rosemary administration has a positive impact on gastrointestinal (GI) health through decreased oxidative stress and inflammation in the GI tract. The objective of this review is to highlight the food preservative potential of rosemary and detail several studies that investigate rosemary to improve in vivo GI health.
Oct 2020 DOI 10.14302/issn.2377-2549.jndc-20-3534
Hari Venkateswara Rao C.Corresponding author
Ph.D Scholar, Mechanical Engg. Dept., UCE, Osmania University, Hyderabad – 07
In this article I am explaining the Computational Fluid Dynamics (CFD) simulation study on shell made of Composite material when subject to Temperatures above 3000ºC. In this analysis a shell is made of the composite structure with all the properties defines as of the Carbon Phenolic materials and is subjected to temperatures of 3000ºC and the flow pattern over the surface is studied and the velocity gradients on the shell when travelling with such high speeds and temperatures are studied. This simulation study can be used to predict the flow simulation in various applications of heat transmission. This CFD simulation study results are useful to make a CP composite material for better thermal applications in aerospace industry.
Aug 2020 DOI 10.14302/issn.2835-2165.jfsh-20-3487
Roozbeh Nasiraie LeilaCorresponding author
Assistant Professor, Department of Food Science and Technology, Nour Branch of Islamic Azad University, Nour, Iran
The ever-present need for human communities to extract herbal active ingredients has necessitated many studies to be carried out in order to introduce more efficient and cost-effective extraction processes. The traditional extraction methods are very time consuming and use large volumes of solvents. The large volumes of solvents consumed in such methods not only increase costs but also pose many environmental problems. New extraction methods have been recently introduced to replace the traditional ones. These new methods reduce the volumes of required solvents, shorten the process and increase its efficiency and improve the quality of the products. In this study, the three methods of immersion, boiling, and ultrasound using water/ethanol solvents were employed for garlic extraction and compared with each other in terms of the extraction speed and time, the antioxidant property of the extract, and the quantity of the heat-sensitive active ingredient. The results showed that the highest allicin content (0.086%) was observed in the ultrasonic aqueous extract. The largest amounts of phenolic compounds (0.311 mg gallic acid equivalent) were observed in the ultrasonic aqueous extract followed by the aqueous extract prepared after 72 h in a shaking incubator. The highest inhibition rate (50% at 5000 ppm) was that of the ultrasonic aqueous extract and the shaken aqueous extract. Other extracts achieved an inhibition rate of 50% at 8000 ppm. Therefore, ultrasonic extraction can be a good alternative to traditional extraction methods.
Aug 2020 DOI 10.14302/issn.2328-0182.japst-20-3447
Taleb JihenCorresponding author
Laboratory of Active Biomolecules Valorisation, Higher Institute of Applied Biology of Medenine, University of Gabes, 4119 Medenine, Tunisia.
The cactus Opuntia ficus indica (L.) Mill. (Cactaceae) is widely used in Tunisian medicine for the treatment of various illnesses. The purpose of the present study was to investigate the antioxidant activities of cactus cladode extract (CCE) and to assess the protective effects of Opuntia ficus indica against osteoporosis induced by cadmium chloride in male Wistar rats. Adult male rats were divided into 4 groups of 9 each: a control group, a group injected with cadmium (3.5mg/kg) for 10 weeks, a group orally given a O. ficus indica cladodes aqueous extract (CCE) (100 mg /kg/day) for 10 weeks then treated with cadmium, and a group receiving only (CCE) for 10 weeks. Bone toxicity was estimated by examining femoral length and weight, calcium, phosphorus, alkaline phosphatase (ALP) and total tartrate-resistant acid phosphatase (ACP) levels in serum. Also, bone levels of calcium, phosphorus and vitamin C and bone mineral density (BMD) of femur diaphysis were measured. Alterations of these bone biomarkers and decreased BMD confirmed cadmium-induced bone toxicity. However, when cadmium was administered in rats given CCE, all the biological parameters underwent much less alteration. Administration of CCE was found to be beneficial by attenuating cadmium-induced femur damage. The protective effect of the plant is mainly attributed to its phenolic compounds that orchestrate antioxidant properties, as highlighted by HPLC-based analysis.
Apr 2020 DOI 10.14302/issn.2575-7881.jdrr-20-3267
Sharma BechanCorresponding author
Department of Biochemistry, Faculty of Science, University of Allahabad, Allahabad-211002, Uttar Pradesh, India
The phytochemicals are endowed with antioxidant activities because of the presence of plentiful polyphenols and many other phytochemicals. However, some recent reports have suggested that phytochemicals from certain plant species exhibit DNA damaging properties mainly due to presence of alkaloids. In the present study, pBR322, Salmonella typhi DNA, insect DNA and human DNA were treated with hexanolic extract of Argemone mexicana and Thevesia peruviana leaves to assess their DNA damaging abilities. Another set of experiments was carried out using the methanolic extracts of Citrus lemon leaves to assess their DNA protecting abilities from damage of DNA by extracts of A. mexicana and T. peruviana at 150000 ppm for all DNAs used. The results indicated that the leaves extract of A. mexicanaand T. peruviana demonstrated significant DNA damaging potential at higher concentrations. In contrast, the extracts from C. limonat 15000 ppm showed maximum DNA protective properties for all DNAs used.
Mar 2020 DOI 10.14302/issn.2379-7835.ijn-20-3175
Cyril Abang AgborCorresponding author
Department of Anatomy, Collage of Basic Medical Sciences, University of Calabar, Nigeria
Local Nigerian men have been using AuriculariaPolytricha as a treatment for sexual dysfunction without supporting evidence from scientific experiments. This study was to investigate the effect of ethanolic extract of A. Polytricha on testicular DNA expression and some oxidative stress markers using STZ-Induced diabetic rats as a model. The experiment included six groups, Group A (Normal Control, treated with normal saline), Group B (treated with 65mg/kg.bw of STZ), Groups C, D, and E (treated with 250mg/kg.bw, 500mg/kg.bw, 1000mg/kg.bw AP after inducing diabetics), and Group F (treated with 40mg/kg.bw metformin after inducing diabetics). The experiment lasted for 35 days. After termination of the experiment, Fuelgen nuclear reaction was used for DNA demonstration to assess testicular DNA distribution while serum Superoxide Dimutase (SOD), Catalase and Melondialdehyde where evaluated using reagent based antioxidant enzyme assay. Results reveals that SOD and Melondialdehyde activities were remarkably (p<0.05) higher in diabetic control animals when compared with the normal control group. Values in Groups C, D and F that were administered with 250, 500mg/kg.bw A. polytricha and metformin respectively were also significantly (p<0.05) increased when compared with the normal control group. However, diabetic animals placed on 1000mg/kg.bw A. polytrichadid not show any statistical significance in comparison with normal control group but was remarkably (p<0.01) decreased when compared to the diabetic group that received low dose A. polytricha, an indication that the reversal is dose dependent. Catalase concentration in diabetic control animals was remarkably (p<0.05) higher when compared to the normal control but was not significantly (p<0.05) different in groups D (DM+500mg/kg.bw A. polytricha) and E (DM+1000mg/kg.bw A. polytricha) when compared with the normal control group. Diabetic control animals showed reduced magenta colour intensity of DNA and increased clustering and cross linking of DNA strands when compared with the normal control. However the degree of cross link in DNA strands was reduced in the diabetic animals placed on 1000mg/kg.bw A. polytrichawhen compared with the diabetic control group. Reversal in DNA damage and values of serum oxidative stress markers following administration of graded doses of A. polytricha could be attributed to essential phytochemical and therapeutic constituents in A. polytricha like polyphenol and flavonoid which can be found useful in prevention and treatment of diabetes induced testicular dysfunction. In summary, AP can contribute to a reversal in DNA damage and levels of serum oxidative stress markers in treating diabetes-induced testicular dysfunction.
Oct 2019 DOI 10.14302/issn.2638-4469.japb-19-3051
Ahmed Ismail HebatollahCorresponding author
Botany Department, Faculty of Science, Ain Shams University, Cairo, Egypt
Triacontanol (TRIA) role in improving growth, physiological activities and tolerance against abiotic stresses has been reported. Yet, the mechanism by which TRIA executes its effects remains elusive. This work therefore studied the possible role of TRIA exogenous application in counteracting the adverse effects of nickel (Ni) treated maize seedlings. Maize seedlings (15-day-old) were grown in washed sand irrigated with nutrient solution provided with 100 μM NiCl2. Two concentrations of TRIA (25 and 50 µM) were applied twice as a foliar spray for Ni-stressed seedlings. Shoot and root growth attributes, Ni content, and antioxidant defence systems of maize seedlings were determined. Ni treatment reduced the shoot and root length and biomass, causing necrosis of the old leaves,greater reduction was shown in the roots. The shoot and root length was negatively correlated with their Ni content, which was consistent with their content of H2O2, but not with their malondialdehyde (MDA) content. As the roots had the greatest Ni content, maximum peroxidase (PX) and glutathione reductase (GR) activity as well as the highest ascorbic acid (ASA) and reduced glutathione (GSH) content were observed in the roots. The Ni-induced deleterious effects were alleviated by foliar application of TRIA concentrations. Also, TRIA treatment minimized root Ni content, whereas it maintained the shoots unharmed by Ni. Such mitigative effects of TRIA are explained by its key role in enhancing antioxidant capacity (expressed as IC50), increased PX and ascorbate oxidase (AO) activity, GSH, and total phenolic contents.
Oct 2019 DOI 10.14302/issn.2691-6622.ijar-19-2991
H Radwan ECorresponding author
Zoology Department, Faculty of Science, Damanhour University, Egypt
The purpose of this study is to evaluate the impact of organic pollution of EL-Mahmodia canal on the fish (Oreochromis niloticus)muscles tissues collected from two sites at EL-Mahmodia canal in summer and winter 2017. EL-Mahmodia canal is exposed to excessive of effluents which impact fish. The present results showed high concentrations of organic pollutants, particularly in winter. Organic pollutants were analyzed using the gas-chromatography-mass spectrometry (GC-MS). A variety of environmental screening studies concerning varieties of water pollutants in Egypt, the target of the present study was to scan the organic pollutants of El-Mahmodia stream at El-Beheira Governorate, Egypt within the muscles of Tilapia fish. Within the present study, it was found that; the analysis of fish muscles in summer season showed a high level of organic pollutants. The organic pollutants that are reported in the muscle of fish in the polluted site were reported as; Dimethomorph-(E), Hexestrol, Diisobutyl phthalate, Diamyl phthalate, Di-n-propyl phthalate, Chlorpyrifos, Phorate sulfoxide, Exaltolide (15-Pentadecanolide), Chlorfenapyr, Pyridate, Ethofumesate, Bis (2-ethylhexyl)phthalate, Dicyclohexyl phthalate, Di-n-octyl phthalate, Tricresylphosphate, meta-, XMC (3, 4-Dimethylphenyl N-methyl, XMC (3,5-Dimethylphenyl N-methyl, Hexestrol, Thymol, Kinoprene, Diisobutyl phthalate, Diisobutyl phthalate, Di-n-hexyl phthalate, Di-n-hexyl phthalate, Carbofuran-3-keto, Tefluthrin, cis-, Carbofuran-7-phenol, Carbofuran, Dicyclohexyl phthalate, Di-n-propyl phthalate, Di-n-propyl phthalate, Bis(2-ethylhexyl)phthalate, Ethofumesate, Hexestrol, Kinoprene, Di-n-hexyl phthalate, Exaltolide (15-Pentadecanolide), Spiroxamine metabolite (4-tert-b), Chlorfenapyr, Tricresylphosphate, para, Tricresylphosphate, meta-, Tricresylphosphate, ortho-, XMC (3, 5-Dimethylphenyl N-methyl, XMC (3,4-Dimethylphenyl N-methyl, Fluroxypyr-1-methylheptyl ester, Cashmeran, Propargite metabolite (Cyclohexa), and Quinoclamine. The present results showed that Diisobutyl phthalate, Bis(2-ethylhexyl)phthalate, Pyridate and Ethofumesate were detected in winter season in the polluted site, whereas, Bis (2-ethylhexyl) phthalate, and Pyridate were the only organic pollutants that were found in winter in the reference site. The accumulation patterns of organic pollutants percentage in the polluted site in summer in the muscles of O. niloticus were in the following order: Chlorpyrifos> Diamyl phthalate> Diisobutylphthalate> Di-n-butylphthalate> Diamyl phthalate> Bis (2-ethylhexyl) phthalate, whereas, in the reference site in summer, it was Chlorpyrifos> Chlorfenapyr> Di-n-butylphthalate> Diisobutylphthalate> Hexestrol> Di-nhexyl phthalate. The accumulation patterns of organic pollutants in the polluted site in winter in the muscles of O. niloticus, were in the following order: Bis(2-ethylhexyl)phthalate> Pyridate> Ethofumesate, whereas in the reference site it was; Bis (2-ethylhexyl)phthalate> Pyridate.
Jun 2019 DOI 10.14302/issn.2471-2140.jaa-19-2747
M. S. López-CortezCorresponding author
Numerous studies have reported the health benefits of consuming fruits and vegetables that contain antioxidant properties. Within the group of fruits considered exotic, some are accessible and only consumed in their place of origin, such as soursop, noni, kiwi, pitahaya, and others. Anacardiumoccidentale, cashew, is a crop native to the Brazilian northeast that has excellent medicinal and nutritional properties. Because few studies have characterized cashew produced in Mexico, in the present work, the physicochemical properties and antioxidant capacity of cashew apple (red and yellow varieties) and its nut were studied. The content of total phenolic compounds and the antioxidant capacity were higher in the nut (174.19±20.98 GAE mg/100 g db) while cashew red pulp showed a superior value of the phenol content (159.75±12.91 GAE mg/100 g db) to that of yellow cashew pulp (151.9±5.23 GAE mg/100 g db). A high value was obtained for the TPC of the husk of cashew nut (74.30 mg GAE/g) compared with those of the kernel and false fruit. Red cashew presented a higher antioxidant capacity at 77.65 μmol Trolox/g and was superior to that of the kernel (38.52±2.9 μmol Trolox/g). Because cashew apple is usually discarded, a marmalade based on the pulp is proposed as an alternative for its conservation because it has a high content of phenolic compounds that is conserved for six weeks of shelf life.
May 2019 DOI 10.14302/issn.2324-7339.jcrhap-19-2847
Sharma BechanCorresponding author
Department of Biochemistry, Faculty of Science, University of Allahabad, Allahabad-211002, UP, India.
Background Carissa carandas L. is a well-known wild fruit plant distributed through-out the India and also present in other countries. The fruits are rich in nutrients and minerals. A number of medicinally important phytochemicals such as carrisone, carindone, carandinol, lupeol, scopoletin, stigmasterol, β-sitosterol, myo-inositol, β-amyrin, Des-n-methylnoracronycine etc. have been reported from the extract of this plant. Being safe and cost effective molecules, the activity of phytochemicals against HIV-1 enzymes needs to be screened. Objective The aim of this study was to screen the potent phytocompound of C. carandas against human immunodeficiency virus-1 using docking method. Methods Total nine compounds viz. carandinol, caridone, carrisone, lupeol, p-coumaric acid, gallic acid, rutin, scopoletin and ursolic acid were used for in-silico study towards drug development against human immunodeficiency virus-1 reverse transcriptase (HIV-1RT; PDB ID: 1REV) and human immunodeficiency virus-1 protease (PDB ID:1EBY) using Autodock software. Results The qualitative characterization of the extracts showed the presence of a number of phytochemicals such as phenolics, flavonoids, alkaloids, terepnoids, terpenes, steroids, glycosides etc. Carandinol was observed as most effective anti-HIV-1 molecule having lowest binding energy and small inhibition coefficient. Another compound, p-coumaric acid, showed least effectiveness against human immunodeficiency virus- 1 reverse transcriptase or human immunodeficiency virus-1 protease showing highest binding energy and inhibition coefficients among all the evaluated phytocompounds. Conclusion The in-silico study demonstrated that some phytoconstituents of C. carandas exhibit potential anti-human immunodeficiency virus -1 activity and hence can be optimized to develop as a drug candidate in future.
May 2019 DOI 10.14302/issn.2576-6694.jbbs-19-2791
A. M. LawalCorresponding author
Plants used for medicinal practices which were discovered since prehistoric stone ages are termed Medicinal plants, which are also referred to as medicinal herbs, since plants produces bioactive chemical compounds (phytochemicals), this research however, is concerned with the extraction using Soxhlet extraction technique, phytochemical screening using various test methods, which reveals the presence of anthraquinones (free anthraquinones and combined anthraquinones), carbohydrates, cardiac glycosides, glycosides, flavonoids, saponins, steroids/ terpenes, phenolic compounds and tannins, and absence of alkaloids for extracts of senna occidentalis and also, thin layer chromatography profiling which gives probable foundation for further structural elucidation amongst others. This research shows the presence of potent secondary metabolites present in the leaves of senna occidentalis (leaves).
Feb 2019 DOI 10.14302/issn.2641-9467.jgrc-19-2619
Sørensen MartenCorresponding author
Department of Plant & Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 3., 1870 Frederiksberg C.
The Andean region is the centre of origin and domestication of at least 9 species of native root and tuber crops in addition to several species of native potatoes. Within this group, Mauka – also known as Miso or Taso ‒ (Mirabilis expansa Ruíz & Pav.) Standl. ‒ Nyctaginaceae) is one of the least well known, despite having much potential. It is cultivated at high altitudes (2300 to 3500 m a.s.l.) in Ecuador, Peru and Bolivia and is thought to be of pre-Inca origin. Mauka is characterized by its high nutritional value due to substantial levels of protein, calcium and phosphorus, as well as secondary metabolites with nutraceutical properties of varied application. It also has good potential as a forage plant. Based on ethnobotanical knowledge and scientific investigations, this review presents advances in the agronomic understanding of Mauka since its discovery five decades ago in several isolated rural Bolivian communities. The information presented covers both Andean and non-Andean countries. It includes results from journals on natural resources, botany, agronomy, and the congress minutes from botanical, agronomic and phytogenetic resources conferences. Theses on Mauka specifically and on phytogenetic resources in general were also reviewed. Books and manuals were reviewed in the libraries of the International Potato Center, INIAP-Ecuador, INIA-Peru and universities. The plant is described with emphasis on its agronomic traits and according to its propagation forms (seed or vegetative); in terms of its agroecology, phenology, growth dynamics and their indices, crop management, harvest and post-harvest processes. It is concluded that important advances in the understanding of the agronomy of Mauka have been accomplished. Furthermore, the review highlights aspects requiring further research, in order to develop improved production technologies to ensure its future use and conservation.
Dec 2018 DOI 10.14302/issn.2377-2549.jndc-18-2479
Babaee SaeedCorresponding author
Chemistry and Chemical Engineering Complex, Malek Ashtar University of Technology, Lavizan Avenue
In this work, Taguchi design (orthogonal array, OA9) was used for the adhesion investigation of an epoxy insulator to a double base (DB) propellant grain. In this manner three epoxy resins based on diglycidylether bisphenol A (DGEBA) and three polyamine curing agents with an active diluent based on DGEBA were used. Therefore, the effects of resin type, curing agent type with its amount and diluent quantity as main factors were investigated on the single lap shear strength (adhesion strength) and then the results were quantitatively evaluated by the analysis of variance (ANOVA). The data given of ANOVA predicted that the best adhesion strength of 15.584 ± 1.606 MPa was obtained for the optimum conditions of MANA POX-102 as epoxy resin, H-37 as curing agent with 57 phr, ERYSYS GE-30 as diluent with 5 phr. In comparison, practical result of adhesion strength obtained for the optimum conditions was 15.4 ± 0.2 MPa. Also the Pull-off test results on the surface of the DB propellant showed that the maximum adhesion strength (related to the optimal conditions) is 2.64 ± 0.2 MPa.
Nov 2018 DOI 10.14302/issn.2690-0904.ijoe-18-2389
Isaksson MarléneCorresponding author
Lund University, Department of Occupational and Environmental Dermatology, Skane University Hospital, Malmö, Sweden.
Background A survey was undertaken in all ice hockey players in 26 professional teams in Sweden representing the 2 highest divisions. All players answered a questionnaire and the players from 6 teams, 3 from each one of the 2 divisions, were patch tested with 72 test preparations in a baseline series supplemented with a series representing the work environment of the players. For practical reasons, the patch testing and test reading on day 3 (D3) took place in the arenas of the teams. As a traditional dermatologist reading on D7 was impossible to perform in all but one team, the players and coaches were asked to use their mobile phones to take photos of the tested backs of the players on D7 and send to the investigative team. In one team a dermatologist reading took place on D7 independent of the mobile photos. Aim The aim of the study was to investigate if photos from mobile phones taken on D7 by the subjects themselves or someone helping them could add positive reactions to those noted from traditional test readings on D3. Materials and Methods 107 players in the 6 teams were patch tested and reading on D3 was performed in 103 of them. Mobile photos of the backs of 100 players were taken on D7. Results 5 photos obtained from the 100 players available for the second test reading on D7 had too bad quality to allow evaluation. Thus, photos of 95/103 (92.2%) players with a live dermatologist reading on D3 were evaluated. Besides 50 contact allergic reactions noted in 26 players on D3, 7 (14%) more positive reactions were registered in 5 players, in 2 without any reactions on D3. The 7 additional reactions were noted to 7 different sensitizers - oxidized linalool, mercapto mix, mercaptobenzothiazole, PFR-2 (resol resin based on phenol and formaldehyde), paraben mix, imidazolidinyl urea, and methylenedianiline. Conclusion 14% more contact allergic reactions were diagnosed when using photos of the tested backs of the players replacing the traditional dermatologist reading on D7.
May 2018 DOI 10.14302/issn.2690-4829.jen-18-2048
Tang WeiCorresponding author
College of Horticulture and Gardening, Yangtze University, Jingzhou, Hubei Province 434025, People’s Republic of China.
Rooting of cuttings is very important for production of economically important plants. We produced thousands of plantlets in Taxus chinensisvar. mairei using the technology of rooting of cuttings and identified two types of rooted cuttings, one with low rate of root formation and another with high rate of root formation. To determine the physiological role of antioxidative enzymes and microRNAs during the process of rooting, we measured the levels of these antioxidative enzymes and microRNAs in the stem portion, needles, roots, and basal portion of cuttings. Compared to the cuttings with low rate of root formation, cuttings with high rate of root formation had higher expression of polyphenoloxidase (PPO), catalase (CAT), peroxidase (POD), ascorbate peroxidase (APOX), glutathione reductase (GR), and superoxide dismutase (SOD) in the adventitious roots and basal portion of the rooted cuttings 77 days after planting. In the basal portion of cuttings, the content of thiobarbituric acid reactive substances (TBARS) and total phenols were decreased and the content of antioxidants was increased, but they did not changed in the needles of cuttings during planting. Analysis of microRNAs by quantitative realtime PCR demonstrated that expression of miR162, miR408, and miR857 increases in the basal portion of cuttings, but not in the stem portion of cuttings, 77 days after planting. Expression of miR408 and miR857 were also increased in the needles of cuttings 77 days after planting. Changes of these antioxidative enzymes and microRNAs associated with the rooting features of T. chinensisvar. maireicuttings and their functions have been discussed.
Sep 2017 DOI 10.14302/issn.2471-2140.jaa-17-1728
Md. Badrul IslamCorresponding author
The use of herbal medicine is becoming popular day by day due to toxicity and side effects of allopathic medicines. Considering the medicinal importance of the plant Murraya koenigii Linn (Curry leaf), the antioxidant activity (AC), total phenolic content (TPC), total flavonoid content (TFC), of different fractions of methanolic extract (DIA-ion resin adsorbed fraction, chloroform, Ethyl acetate and petroleum ether) of M. koenigii were investigated. Among the fractions, DIA-ion resin-adsorbed fraction showed the highest total antioxidant activity with absorbance 2.320±06 and petroleum ether fraction showed the lowest total antioxidant activity with absorbance 1.944 at 100 mg/ml concentration. The TPC were found range between 13.285 to 17.52 mg GAE/g while the highest amount of TFC recorded among the extracts was 16.65 mg CatE/g. DPPH free radical scavenging activity of different extracts of leaves was also measured where DIA-ion resin-adsorbed fraction had the highest free radical scavenging activity with IC50 value 15.53 µg/ml. In the present study phenolic compound were found to be the predominant components in the leaves of M. koenigii indicating that they are potent antioxidant.
Aug 2017 DOI 10.14302/issn.2471-2140.jaa-17-1541
Yu ZhiCorresponding author
College of Horticulture and Forestry Science, Huazhong Agricultural University, Key Laboratory of Horticultural Plant Biology, Ministry of Education, No. 1 Shizishan Street, Hongshan District, Wuhan City, Hubei Province, China 430070
In the present study, we investigated the chemical compositions, in vitro antioxidant and in vivo hepatoprotective activities of two tea polysaccharides (TPS), which were extracted from two different tea cultivars, Yingshuang (Camellia Senesis, T01) and Yunnan Dayezhong (Camellia Senesis, T09). Compared with T09-TPS, T01-TPS had lower contents of neutral sugar, protein, uronic acid and polyphenol. However, T01-TPS showed stronger scavenging abilities for transient free radicals of hydroxyl radical and superoxide anion radicals and lipid peroxidation inhibition effect, but weaker scavenging ability for stable free radical of DPPH. For hepatoprotective activity in vivo, the results demonstrated that both T01-TPS and T09-TPS could significantly prevent the increase of serum alanine aminotransferase and, aspartate aminotransferase levels, decrease the liver index, reduce the formation of malonydialdehyde and enhance the activities of superoxide dismutase, glutathione peroxidase and peroxidase in carbon tetrachloride-induced liver injury mice. These results suggest that T01-TPS and T09-TPS have potent antioxidant and hepatoprotective activities.
Jul 2017 DOI 10.14302/issn.2471-2140.jaa-17-1630
Aholia Jean- Baptiste AdépoCorresponding author
Laboratoire de Toxicologie et Hygiène Agro-industrielle, UFR Sciences Pharmaceutiques et Biologiques, Université Félix Houphouët-Boigny, BP V 34, Abidjan, Côte d’Ivoire
Introduction: Aflatoxins are cytotoxic andserve as one of the key risk factors of hepatocellular carcinoma. Currently, plants and extract are widely used as potential scavenging substances for the detoxification of mycotoxins. Thus, this study aims to investigate the activity of the crude ethanolic leaves extract from Alchorneacordifolia in aflatoxicosis prevention. Material and Methods: The phytochemical screening was performed through qualitative analysis based on coloring and/or precipitation reactions. Groups of rats were treated daily with a mixture dose of aflatoxin B1 (AFB1) at 150 µg/kg and the crude extract of Alchorneacordifolia at doses of 50, 100, and 300 mg/kg for 21 days. The body weight, biochemical, and histological assessments were determined. Results: The phytochemical screening revealed the presence of polyphenols, flavonoids, sterols and terpenoids, quinoid compounds, tannins catechic and alkaloids. AFB1 treatmentcaused a significant increase of transaminases, urea, and creatinine abundances but reduced the rates of albumin and total proteins. Alchorneacordifolia administration alleviated biochemical parameters and body weight gain compared with the AFB1 group (p<0.05). The histological lesions of organs (liver and kidney) caused by AFB1 were significantly improved after administration of the extract at a dose of 300 mg/kg. Conclusion: This plant plays a beneficial role in AFB1-induced injury and may be used in the treatment of aflatoxicosis.
Jun 2017 DOI 10.14302/issn.2835-2165.jfsh-17-1556
Demissew AyalewCorresponding author
Amhara Regional Agricultural Research Institute
Beer is typically brewed from four basic ingredients (water, a starch source, brewer’s yeast and flavoring agent such as hops). In Ethiopian case hops are coasty ingredient of beer which is imported with hard currency of the country. But this flavoring agent (hops) in beer production can also be substituted by locally available flavouring agent called gesho “Rhamuns Prinoide” leaf. In this study the effect of drying temperature and time on brewing components of gesho “Rhamuns Prinoide” leaf was examined using oven dryer. Brewing components of gesho “Rhamuns Prinoide” leaf were compared by taking the commercial hop brewing component as a standard. Drying temperature and time have a significant effect (P< 0.05) on major beer brewing components (Resin, Hop oil, Polyphenol, Mineral and Protein) of gesho leaf. Not only drying temperature and time but also the interaction effect has significant effect on these major brewing components of the leaf. The optimal drying temperature and time of gesho leaf was also determined to commercialize the gesho leaf powder or pellet as hop substitute in commercial beer brewers as flavouring
Aug 2016 DOI 10.14302/issn.2474-9273.jbtm-16-1151
Xing GuoqiangCorresponding author
Departments of Anesthesiology, Uniformed Services University of the Health Sciences, Bethesda, Maryland 20814
Oxidative stress mediated neural cell death is thought to be involved in the progression of secondary cell injury following brain trauma. Agents that can block oxidative stress-related injury could be potential therapies for TBI. Resveratrol, a polyphenol found in plants and red wine, is cytoprotective due to its potent antioxidant activities. To further understand how resveratrol could affect oxidative stress-induced injury, we hypothesized that the cytoprotective activities of resveratrol could be dose-dependent. In this study, resveratrol-induced cytoprotection was evaluated in cultured astrocytes. Primary rat astrocytes were cultured in T-75 flasks to a confluence of 80% before being plated onto 96-well plates. After 24 hours of acclimation, astrocytes were treated with various doses of hydrogen peroxide (H2O2) (0.1, 0.25, 0.5 and 1 µM) and resveratrol (25, 50, 75, 100 µM), respectively. Cell viability was determined 24 hours later using Alamar Blue Assay. Treatment of astrocytes with 0.5 mM H2O2, left 65% of astrocytes non-viable whereas treatment of astrocytes with 0.1 mM H2O2 had no effect on astrocytes viability; whereas 1 mM, H2O2 caused total loss of astrocyte viability. Resveratrol treatment at 75 µM and 100 µM has reduced 0.5 mM H2O2-induced cytotoxicity in astrocytes by 50%. Immunostaining with GFAP also confirmed these findings about the cytoprotective effects of resveratrol in astrocytes exposed to H2O2. These results suggest that resveratrol could be a potential neuroprotective agent in TBI due to its antioxidant properties. Further studies are needed to evaluate the long- term effects of resveratrol in animal models of TBI.
Feb 2016 DOI 10.14302/issn.2379-7835.ijn-14-478
Ali Sahari MohammadCorresponding author
Department of Food Science and Technology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran.
In this study, chemical composition of Barberry integerrima seed and physicochemical properties and fatty acids composition of its oil were determined. The seeds contained 11.4 % oil and protein, moisture, crude fiber and ash contents were 17.0%, 19.1%, 48.8% and 2.9%, respectively. The main fatty acids recognized by gas chromatography were linolenic (ω-3), linoleic (ω-6) and oleic (ω-9) acid (38.3, 37.0, 15.5%, respectively). The density and refractive index of the extracted barberry seed oil were 0.821 and 1.4780, respectively. FFA (% as oleic acid), acid value (mg KOH/g oil), iodine value (g I2/100 g oil), saponification number (mg KOH/ g oil), and unsaponifiable matter content (%) of the extracted oil from Barberry integerrima seeds were 0.70, 1.4, 180.0, 197.2, and 2.3, respectively. Color of extracted crude oil exhibited red unit 4.9, yellow unit 18.6 and blue unit 1.9, respectively. Total phenolics compounds (mg Gallic acid/kg oil), total tocopherols (mg/kg oil) and total sterols (mg/100g oil), were 323.0, 111.1 and 762.3, respectively. Specific extinctions at 232 nm (K232) and 270 nm (K270) and R-value (K232/K270) were 3.9, 2.2 and 1.8, respectively. The present study revealed that Barberry integerrima seed oil can be a valuable source of oil for food, pharmaceutics and cosmetics uses.
Dec 2015 DOI 10.14302/issn.2471-2140.jaa-15-715
Kevers ClaireCorresponding author
Plant Molecular Biology and Biotechnology and CEDEVIT B22, University of Liège Chemin de la Vallée, 4, Sart Tilman, 4000 Liège Belgium
Since a few years, more and more attention has been specifically given to dietary antioxidants as agents promoting health and preventing the incidence of diseases. As part of these efforts, analytical methods and assays have been developed to measure the antioxidant content in food substances. In this paper, the antioxidant capacity of 17 orange juices is determined by various assays (DPPH, ORAC, heamolysis, xanthine/xanthine oxidase) as the content in ascorbic acid and total phenolics. The results evidence all the complexity to evaluate the in vitro antioxidant capacity of foods. In very general terms, in spite of the wide utilization in these tests (FRAP, TAC, ORAC TRAP and others), their significance remains obscure. The discrepancy of the results and the absence of good correlation between the assays clearly highlight all the importance of understanding the strengths and weakness of assays evaluating antioxidant potential of a food at the risk of giving erroneous information to the consumer. It is clear that the use of "total antioxidant capacity" assays for the in vitro assessment of antioxidant quality of food does not be employed by food industrials as a marketing argument or for the assessment of the "wholesomeness" of a food.