Application of Gas Chromatography-Mass Spectrometry to in vitro Studies of Nitrogen Metabolism1

2015 ◽  
pp. 209-218
Author(s):  
M. Yudkoff ◽  
I. Nissim ◽  
D. Pleasure ◽  
K. Hummeler ◽  
S. Segal
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
In Vitro Studies ◽  
Gas Chromatography Mass Spectrometry ◽  
Chromatography Mass Spectrometry

scholarly journals GAS CHROMATOGRAPHY-MASS SPECTROMETRY ANALYSIS AND IN VITRO ANTIMICROBIAL SCREENING OF WEDELIA GLAUCA (ORTEGA) O. HOFFM. EX HICKEN

2017 ◽  
Vol 10 (11) ◽  
pp. 109
Author(s):  
Krishnavignesh L Krishnavignesh ◽  
Mahalakshmipriya A ◽  
Ramesh M
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Antimicrobial Activity ◽  
Mass Spectrometry Analysis ◽  
Gas Chromatography Mass Spectrometry ◽  
Diffusion Method ◽  
Spectrometry Analysis ◽  
Chromatography Mass Spectrometry ◽  
Ms Analysis

  Objective: Continued resistance toward the antibiotics urges us to explore newer antibiotics. Plants are being the safer source of antibiotics with lesser or no side effects. This study was designed to study the presence of phytochemical constituents and antibacterial activity of leaf and flower extracts of Wedelia glauca against urinary tract infection causing pathogens.Methods: The plant leaves were extracted with five different solvents based on the polarity. The extraction was done using soxhalation. Antimicrobial activity was determined by agar well diffusion method for both the sample and standard. The acetone plant extract was subjected to gas chromatography-mass spectrometry (GC-MS) analysis for screening phytoconstituents.Results: Preliminary phytochemical screening revealed the presence of diverse phytoconstituents in the plant. The different extracts exhibited a considerable antimicrobial potential. Among the solvents used acetone extract showed comparably better antimicrobial activity with 100% of inhibition rate with the maximum zone of inhibition of 1.6±0.77 mm against Staphylococcus sp. and Aspergillus sp. at the concentration of 5 mg. GC-MS analysis provided 8 major peaks which revealed the existence of a variety of bioactive compounds which may attribute to the efficacy of the plant.Conclusion: W. glauca leaf and flower extracts displayed a broad spectrum of antibacterial and antifungal activity and can be considered as a potential source of newer antibiotic compounds.

In vitro and in vivo studies of androst-4-ene-3,6,17-trione in horses by gas chromatography-mass spectrometry

2009 ◽  
Vol 24 (7) ◽  
pp. 744-751 ◽  
Author(s):  
Gary N. W. Leung ◽  
Francis P. W. Tang ◽  
Terence S. M. Wan ◽  
Colton H. F. Wong ◽  
Kenneth K. H. Lam ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
In Vivo Studies ◽  
Gas Chromatography Mass Spectrometry ◽  
Chromatography Mass Spectrometry

scholarly journals GAS CHROMATOGRAPHY–MASS SPECTROMETRY ANALYSIS, IN VITRO ACTIVITIES, AND IN SILICO MOLECULAR DOCKING OF MAJOR COMPONENTS OF MICHELIA ALBA DC ESSENTIAL OIL AND SCENTED EXTRACTS

2018 ◽  
Vol 11 (12) ◽  
pp. 499
Author(s):  
Thongchai Khammee ◽  
Amornmart Jaratrungtawee ◽  
Mayoso Kuno
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Molecular Docking ◽  
Essential Oil ◽  
Binding Energies ◽  
Mass Spectrometry Analysis ◽  
Gas Chromatography Mass Spectrometry ◽  
Spectrometry Analysis ◽  
Chromatography Mass Spectrometry

Objective: The essential oil and scented extracts of Michelia alba DC. were analyzed by gas chromatography–mass spectrometry (GC–MS) and investigated for antidiabetic activities in vitro and in silico.Methods: The identification of steam distilled essential oil and scented extracts of M. alba was performed by GC–MS on the Agilent 7890A chromatograph couple with GC-7000 Mass Triple Quadrupole. The extractions have been evaluated the antidiabetic activities by alpha-amylase (α-amylase) assay using starch as substrates. In addition, computational molecular docking analysis of significant components was studied to understanding how selected compounds interacted with α-amylase using AutoDock 4.2.Results: The yields of M. alba of steam distilled essential oil and solvent extractions including hexane, diethyl ether, and dichloromethane were 0.16%, 0.02%, 0.47%, and 0.92%, respectively. GC–MS analysis of essential oil revealed that the main component was monoterpenoids β-linalool (65.03%). Meanwhile, 2-methylbutanoic acid was a primary in hexane extract (36.54%) and dichloromethane extract (33.07%). In the case of ether extract, the primary compound was β-linalool (37.32%) same as in essential oil. The antidiabetic activities evaluation demonstrates that essential oil and scented extracts have shown promising α-amylase inhibition activity. Essential oil from steam distillation revealed the best inhibition potential with a half maximal inhibitory concentration value of 0.67±4.7 mg/ml and their significant components demonstrated negative binding energies, indicating a high affinity to the α-amylase-binding site using molecular docking simulation.Conclusion: Data from this study suggest that essential oil and scented extracts of M. alba DC possess in vitro α-amylase activities and can be used for therapy of diabetes.

Sign in / Sign up

Export Citation Format

Share Document