Search results for “LC-MS

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10 articles

Liquid Chromatography-Mass Spectrometry (LC-MS) Applications in Food Safety–Review

Dec 2024 DOI 10.14302/issn.2835-2165.jfsh-24-5371

One of the primary goals and aims of studying chemistry in society is the promotion of the well-being of humanity and the sustainable utilization of the available resources. Chemistry has played a significant role in water treatment, food production, energy production, and medicine, among other critical areas of society. This study explored the utilization of liquid chromatography-mass spectrometry in the aspect of promoting food safety for human consumption. Various factors might affect the composition and storage of the food items in the society. Through the utilization of chemistry techniques such as (LC-MS), there can be Identification of the various aspects that require consideration in the Improvement of the different health and nutritional requirements that the food items are expected to have in society. As illustrated in this study, the analytical and technical aspects are highly influential in the determination of the proper measures for each component and the illustration of the various toxins that are likely to affect the overall food safety of the members of society in general.

Characterization of the Consciousness Energy Healing Treated Cholecalciferol Using LC-MS and GC-MS Spectrometry

Apr 2021 DOI 10.14302/issn.2328-0182.japst-21-3772

Vitamin D3 (cholecalciferol) is a fat-soluble vitamin, which widely used for the prevention and treatment rickets, osteoporosis, arthritis, Parkinson’s and Alzheimer’s diseases, autoimmune disease, dementia, glucose intolerance, etc. The impact of the Trivedi Effect®-Consciousness Energy Healing Treatment on the structural properties and the isotopic abundance ratio of cholecalciferol were evaluated using LC-MS and GC-MS spectroscopy. The test sample cholecalciferol was divided into control and treated parts. Only, the treated cholecalciferol was received the Trivedi Effect®-Consciousness Energy Healing Treatment remotely by a renowned Biofield Energy Healer, Dahryn Trivedi. The LC-MS spectra of both the samples at retention time (Rt) ~22 minutes exhibited the mass of the molecular ion peak at m/z 385.25 (calcd for C27H45O+, 385.35). The LC-MS based isotopic abundance ratio of PM+1/PM in the treated cholecalciferol was increased by 0.74% compared with the control sample. But, the GC-MS based isotopic abundance ratio of PM+1/PM and PM+2/PM in the treated cholecalciferol was significantly increased by 66.39% and 62.69%, respectively compared with the control sample. Hence,13C, 2H, 17O, and 18O contributions from C27H44O+ to m/z 386 and 387 in the treated cholecalciferol were significantly increased compared with the control sample. The isotopic abundance ratios of PM+1/PM (2H/1H or 13C/12C or 17O/16O) and PM+2/PM (18O/16O) in the treated cholecalciferol were significantly increased as compared to the control sample. The increased isotopic composition of the Trivedi Effect®-Consciousness Energy Healing Treated cholecalciferol might have altered the neutron to proton ratio in the nucleus via the possible mediation of neutrino. The increased isotopic abundance ratio of the treated cholecalciferol may increase the intra-atomic bond strength, increase its stability. The new form of cholecalciferol would be better designing novel pharmaceutical formulations that might be more stable and more efficacious for the prevention and treatment of various diseases such as vitamin D deficiency, rickets, osteoporosis, arthritis, multiple sclerosis, cancer, diabetes mellitus, mental disorders, cardiovascular diseases, hypertension, infections, influenza, cognitive impairment in older adults, Parkinson’s and Alzheimer’s diseases, autoimmune disease, dementia, glucose intolerance, multiple sclerosis, etc.

Evaluation of the Isotopic Abundance Ratio of Consciousness Energy Healing Treated L-Tryptophan Using LC-MS Spectrometry

Apr 2021 DOI 10.14302/issn.2576-6694.jbbs-21-3773

L-tryptophan is an essential α-amino acid, necessary for the normal growth in newborns, nitrogen balance in adults, protein synthesis, precursor of serotonin, melatonin, niacin, and albeit inefficiently in human, also the precursor of indole alkaloids and auxins in plants. This current study was designed to investigate the impact of the Trivedi Effect®-Biofield Energy Healing Treatment (Blessing) on the structural properties and the isotopic abundance ratio of L-tryptophan using LC-MS analytical technique. L-tryptophan sample was divided into two parts, one part of L-tryptophan was considered as the control sample (no Biofield Energy Treatment was provided), while the second part was treated with the Trivedi Effect®-Consciousness Energy Healing Treatment/Blessing remotely by a renowned Biofield Energy Healer, Dahryn Trivedi and termed as the treated sample. The mass spectra of both the control and treated samples with respect to the chromatographic peak at retention time (Rt) 2.1 minutes exhibited the mass of the molecular ion peak adduct with hydrogen ion at m/z 205.08 (calcd for C11H13N2O2+, 205.1), along with low molecular fragmented mass peaks at m/z 188, 159, and 102 for C11H12N2O2+, C10H11N2+, and C8H6+, respectively were also observed. The isotopic abundance ratio of PM+1/PM (2H/1H or 13C/12C or 15N/14Nor17O/16O) in the treated L-tryptophan was significantly increased by 35.93% compared with the control sample. Hence,the 13C, 2H, 15N, and 17O contributions from C11H13N2O2+ to m/z 206.08 in the treated L-tryptophan was significantly increased compared to the control sample. It could be hypothesized that the changes in the isotopic abundance and mass peak intensities due to the modification in nuclei possibly through the interference of neutrino particles using the Trivedi Effect®-Consciousness Energy Healing Treatment. The Biofield Energy Treated/Blessed L-tryptophan with increased stable isotopic abundance ratio might have changed the physicochemical properties with higher force constant in the molecule. The new form of treated L-tryptophan would be a better and more stable in the supplements, nutraceutical, and pharmaceutical formulations, which would be advantageous for the prevention and treatment of pellagra, depression, kynurenine. It could also maintain the normal label of tryptophan and avoid increase of its metabolite, lower the neurotoxin and a metabotoxin behavior, glutaric aciduria type I (glutaric acidemia type I) disorder, eosinophilia-myalgia syndrome (EMS), incurable and sometimes fatal flu-like neurological condition, etc. As tryptophan is the precursor for the plant hormones like indole alkaloids and auxins, hence, this treated L-tryptophan would be advantageous for the improvement of yield, productivity, and quality of crops and other plants.

Analysis of Isotopic Abundance Ratio of Consciousness Energy Healing Treated Metronidazole Using LC-MS and GC-MS Spectrometry

Nov 2020 DOI 10.14302/issn.2328-0182.japst-20-3618

Metronidazole is an antibiotic and useful for the antibacterial and antiprotozoal medication. This study was performed to investigate the impact of the Trivedi Effect®-Biofield Energy Healing Treatment on the structural properties and the isotopic abundance ratio of metronidazole using LC-MS and GC-MS spectroscopy. Metronidazole sample was divided into two parts, one part of metronidazole was considered as control (no Biofield Energy Treatment was provided), while the second part was treated with the Trivedi Effect®-Consciousness Energy Healing Treatment remotely by a renowned Biofield Energy Healer, Alice Branton and termed as a treated sample. The LC-MS spectra of both the samples of metronidazole at the retention time (Rt) 2.61 minutes exhibited the mass of the protonated molecular ion peak at m/z 172 M+H+ (calculated for C6H10N3O3+, 172.07). The LC-MS based isotopic abundance ratio of PM+1/PM (2H/1H or 13C/12C or 15N/214N or 17O/16O) in the treated metronidazole was significantly increased by 8.24% compared with the control sample. Thus,13C, 2H, 15N,and17O contributions from (C6H10N3O3)+ to m/z 173 in the treated sample were significantly increased compared with the control sample. The GC-MS based isotopic abundance ratio of PM+1/PM in the treated metronidazole was significantly increased by 5.92% compared with the control sample. Hence,13C, 2H, 15N, and217O contributions from (C6H9N3O3)+ to m/z 172 in the Biofield Energy Treated sample were significantly increased compared with the control sample. However, the isotopic abundance ratio of PM+2/PM in the treated metronidazole was significantly decreased by 18.2% compared with the control sample. Hence,18O contributions from (C6H9N3O3)+ to m/z 173 in the treated sample were significantly decreased compared with the control sample. The isotopic abundance ratio of PM+1/PM (2H/1H or 13C/12C or 15N/14N or 17O/16O) and PM+2/PM (18O/16O) in the treated metronidazole was significantly altered compared to the control sample. From the results, it can be hypothesized that the changes in isotopic abundance and mass peak intensities could be due to changes in nuclei possibly through the interference of neutrino particles via the Trivedi Effect® - Consciousness Energy Healing Treatment. The new form of treated metronidazole would be better designing novel pharmaceutical formulations that might offer better therapeutic response against bacterial and protozoal infection in the vagina (bacterial vaginosis), stomach (giardiasis, trichomoniasis, pseudomembranous colitis), joints (pelvic inflammatory disease), liver, skin, brain, and respiratory tract, aspiration pneumonia, rosacea, intra-abdominal infections, lung abscess, fungating wounds, periodontitis, amoebiasis, oral infections, etc.

Comparison of an HPLC-MS/MS Method with Multiple Commercial ELISA Kits on the Determination of Levels of 8-oxo-7,8-Dihydro-2'-Deoxyguanosine in Human Urine

Dec 2018 DOI 10.14302/issn.2377-2549.jndc-18-2430

Introduction: Analysis of 8-oxodG is usually conducted by either chromatography-based methods or by immunochemical methods commonly used based upon their low cost and high-throughput. However, concern regarding the accuracy of ELISA methods has complicated their use. We directly compare the levels of urinary 8-oxodG obtained by HPLC-MS/MS with three commercially available ELISA kits in this report. Methods: In the current study, a total of 9 human urine samples were analyzed by LC-MS/MS and three commonly used commercial available ELISA kits. Results: We found that urinary 8-oxodG levels analyzed by HPLC-MS/MS [1.4 ± 0.3 nmol/mmol creatinine) were 7.6- to 23.5-fold lower than those detected by ELISA. Overall, the correlations between ELISA and HPLC-MS/MS were poor but were improved after SPE purification for kits from ENZO (P = 0.2817 without SPE; P = 0.0086 with SPE) and Abcam (P = 0.0596 without SPE; P = 0.0473 with SPE). Discussion and Conclusion: While we confirmed that SPE purification can improve the correlation between the selected ELISA kits and HPLC-MS/MS, HPLC-MS/MS is still the method of choice to accurately assess the levels of 8-oxodG in human urine.

Structural Characterization and Isotopic Abundance Ratio Analysis of the Consciousness Energy Healing Treated Ofloxacin

Apr 2021 DOI 10.14302/issn.2766-8681.jcsr-21-3770

Ofloxacin is an antibiotic, useful against the number of bacterial infections. This scientific investigation was performed to identify the impact of the Trivedi Effect®-Consciousness Energy Healing Treatment on the structural properties and the isotopic abundance ratio of ofloxacin using sophisticated analytical techniques. Ofloxacin sample was divided into control and treated parts. Only the treated ofloxacin received the Consciousness Energy Healing Treatment remotely by a well-known Biofield Energy Healer, Mr. Mahendra Kumar Trivedi. The LC-MS spectra of both the samples of ofloxacin at retention time 3 minutes exhibited the mass of the protonated molecular ion peak at m/z 362.17 (M+H)+. The chromatographic peak area% of the treated ofloxacin (52.4%) was increased by 2.03% compared to the control sample (51.36%). The LC-MS based isotopic abundance ratio of PM+1/PM in the Biofield Treated ofloxacin was significantly increased by 22.43% compared with the control sample. Similarly, the GC-MS based isotopic abundance ratio of PM+1/PM in the Biofield Treated ofloxacin was significantly increased by 19.24% compared with the control sample. The LC-MS and GC-MS based isotopic abundance ratio of PM+1/PM (2H/1H or 15N/14N or 13C/12C or 17O/16O) was significantly increased in the Biofield Treated ofloxacin as compared to the control sample. Thus,2H, 15N, 13C, and17O contributions from (C18H21FN3O4)+ to m/z 363.17 in the treated ofloxacin were significantly increased compared with the control sample. The increased isotopic abundance ratio of the Trivedi Effect®-Consciousness Energy Healing Treated ofloxacin may increase the intra-atomic bond strength and increase its physical stability. The new form of treated ofloxacin would be more stable, better soluble, and bioavailable compared to the control sample. It would be more useful to design efficacious pharmaceutical formulations that might offer better therapeutic response against infections in the urethra, urinary tract, gonorrhoea, pneumonia, infectious diarrhoea, bronchitis, cellulitis, bacterial infection of the eye and ear, multidrug-resistant tuberculosis, prostatitis, otitis media, plague, etc.  

Study of the Consciousness Energy Healing Treatment and It’s Effect on the Isotopic Abundance Ratio of Ascorbic Acid (Vitamin C)

Apr 2021 DOI 10.14302/issn.2689-2855.jan-21-3771

Ascorbic acid is a water-soluble vitamin (Vitamin C) essential for both the plants and animals for the metabolic process. In this study, the liquid chromatography-mass spectrometry (LC-MS) analytical technique was used to characterize the structural properties and isotopic abundance ratio to evaluate the effect of the Trivedi Effect®-Consciousness Energy Healing Treatment on L-ascorbic acid compared to the control sample. The ascorbic acid sample was divided into control and treated parts. Only the treated part received the Trivedi Effect®-Consciousness Energy Healing Treatment remotely by a well-known Biofield Energy Healer, Mahendra Kumar Trivedi. The control and treated samples showed a chromatographic peak at retention time (Rt) 1.8 minutes exhibited the deprotonated molecular ion peak at m/z 175 (M-H)- (calculated for C6H7O6-, 175.02) in the mass spectra. The peak area of the treated sample (12817614.01) was significantly increased by 8.81% compared to the control sample (11779918.9). The LC-MS based isotopic abundance ratio of PM+1/PM (2H/1H or 13C/12C or 17O/16O) in the treated ascorbic acid was significantly increased by 23.22% compared with the control sample. Thus,13C, 2H, and17O contributions from (C6H7O6)- to m/z 176 in the treated ascorbic acid were significantly increased compared with the control sample. The increased isotopic composition of the treated ascorbic acid might have altered the neutron to proton ratio in the nucleus. The changes in isotopic abundance could be due to changes in nuclei possibly through the interference of neutrino particles via the Trivedi Effect®-Consciousness Energy Healing Treatment. The increased isotopic abundance ratio and peak area of the treated ascorbic acid may increase the intra-atomic bond strength and its stability. This novel ascorbic acid after the Trivedi Effect®-Consciousness Energy Healing Treatment would be very useful to design more efficacious pharmaceutical formulations against scurvy, obesity, cardiovascular diseases, hypertension, rheumatoid arthritis, Alzheimer's disease, cancer, etc.

Evaluation of the Impact of Consciousness Energy Healing Treatment on the Isotopic Abundance Ratios (PM+1/PM and PM+2/PM) of Ofloxacin

Nov 2019 DOI 10.14302/issn.2377-2549.jndc-19-3080

Ofloxacin is a class of fluorinated quinolone antibiotics, useful against most of the Gram-positive and Gram-negative bacterial infections. This study was designed to investigate the impact of the Trivedi Effect®-Consciousness Energy Healing Treatment on the structural properties and the isotopic abundance ratio of ofloxacin using LC-MS and GC-MS spectroscopy. Ofloxacin sample was divided into control and treated parts. The control ofloxacin did not receive the Consciousness Energy Healing Treatment, while the treated ofloxacin receives the Consciousness Energy Healing Treatment remotely by a renowned Biofield Energy Healer, Dahryn Trivedi. The LC-ESI-MS spectra of both the samples of ofloxacin at the retention time 3.05 minutes exhibited the mass of the protonated molecular ion peak at m/z 362.17 (M+H)+ (calculated for C18H21FN3O4+, 362.15). The LC-MS based isotopic abundance ratio of PM+1/PM in the treated ofloxacin was significantly increased by 56.57% compared with the control sample. Thus, 2H, 15N, 13C, and 17O contributions from (C18H21FN3O4)+ to m/z 363.17 in the treated ofloxacin were considerably increased compared with the control sample. The GC-MS based isotopic abundance ratios of PM+1/PM and PM+2/PM in the treated ofloxacin was significantly increased by 9.53% and 12.94%, respectively compared with the control sample. Hence, 2H, 15N, 13C, 17O, and 18O contributions from (C18H21FN3O4)+ to m/z 318 and 319 in the treated ofloxacin were significantly increased compared with the control sample. The LC-MS and GC-MS based isotopic abundance ratios of PM+1/PM (2H/1H or 15N/14N or 13C/12C or 17O/16O), and PM+2/PM (18O/16O) in the treated ofloxacin were considerably improved compared to the control sample. The increased isotopic abundance ratio of the treated ofloxacin would increase the chemical bond strength and increase the stability in the body. The new form of treated ofloxacin would be more stable compared to the control sample and would be very useful to design improved pharmaceutical formulations that might offer better therapeutic response against infections of the urethra and cervix, infectious diarrhoea, urinary tract infections, cellulitis, chronic bronchitis, pneumonia, prostatitis, multidrug-resistant tuberculosis, plague, otitis media, etc.

Identification and Quantification of an Adulterant in a Dietary Supplement Marketed for Sexual Enhancement

Oct 2018 DOI 10.14302/issn.2328-0182.japst-18-2344

In recent years, the consumption of dietary supplements (DS) has increased worldwide. In Argentina, approximately 14 million DS units were sold between 2015 and 2017. The adulteration of DS with active pharmaceutical ingredients or their analogues has been reported. This represents an alarming emerging risk to public health. The aim of this work was to detect the possible adulteration of a DS marketed in Argentina for the treatment of erectile dysfunction. Initially, thin layer chromatography analysis of the DS capsules content suggested the presence of a major compound. For the isolation and purification of this compound, an easy method consisted of a liquid-liquid extraction (water/CH2Cl2) followed by re-crystallisation from ethanol, is reported. Spectroscopic techniques such as mono- and bidimensional nuclear magnetic resonance, Fourier transform infrared spectroscopy and mass spectrometry allowed its identification as tadalafil. A rapid and reliable method was developed for the quantification of tadalafil in this DS by high performance liquid chromatography-mass spectrometry (HPLC-MS/MS). The mean content of tadalafil per capsule was 21.2 mg which represents a slightly higher value than that found in approved products in Argentina (5 or 20 mg per tablet). In addition, an undeclared alga was identified in the DS by microscopic techniques.

Determination of the Proteomic Response to Lapatinib Treatment using a Comprehensive and Reproducible Ion-Current-Based Proteomics Strategy

Sep 2013 DOI 10.14302/issn.2326-0793.jpgr-13-257

Lapatinib, a small molecule tyrosine kinase inhibitor is currently used in the treatment of HER2-positive breast cancer. The aim of this study was to further understanding of lapatinib response for the development of novel treatment lapatinib-focussed treatment strategies. HER2-overexpressing SKBR3 breast cancer cells were treated with lapatinib for 12 hours and the resultant proteome analyzed by a comprehensive ion-current-based LC-MS strategy. Among the 1224 unique protein identified from SKBR3 cell lysates, 67 showed a significant change in protein abundance in response to lapatinib. Of these, CENPE a centromeric protein with increased abundance, was chosen for further validation. Knockdown and inhibition of CENPE demonstrated that CENPE enhances SKBR3 cell survival in the presence of lapatinib. Based on this study, CENPE inhibitors may warrant further investigation for use in combination with lapatinib.

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