Results 91 to 100 of about 1,649,552 (239)

Comparison between extraction methods to obtain volatiles from lulo (Solanum quitoense) pulp

open access: yesRevista Colombiana de Química, 2016
Simultaneous Distillation-Solvent Extraction (SDE) and Headspace Solid Phase Micro-extraction (HS-SPME), coupled to Gas Chromatography-Mass Spectrometry (GC-MS), for the recovery of volatiles from lulo pulp (Solanum quitoense) were compared. A completely
Eduardo Javid Corpas Iguarán   +3 more
doaj   +1 more source

Combination of Analytical Pyrolysis and fractionation of technical lignin as a tool for improvement of its antioxidant properties [PDF]

open access: yes, 2012
Antioxidant properties of parent lignin and its fractions was assessed in the tests with free radicals ABTS•+ and DPPH. Increasing ratio between content of syringyl and guaiacyl substructures and the extent of conjugation of lignin macromolecule (Py-GC ...
Arshanitsa, Alexandr   +4 more
core  

Modern Instrumental Limits of Identification of Ignitable Liquids in Forensic Fire Debris Analysis

open access: yesSeparations, 2018
Forensic fire debris analysis is an important part of fire investigation, and gas chromatography–mass spectrometry (GC-MS) is the accepted standard for detection of ignitable liquids in fire debris.
Robin J. Abel   +3 more
doaj   +1 more source

Fatty acids Analyses of n-Hexane Fractions of Ageratum conyzoides Leaf [PDF]

open access: yes, 2016
Lipidomics is an emerging field, where the structures, functions and dynamic changes of lipids in cells, tissues or body fluids are investigated. This study revealed the GC–MS metabolic profiling of the polar and non-polar fractions from n-hexane ...
Fasomoyin S. M, Ibukun E. O.   +2 more
core   +1 more source

GAS CHROMATOGRAPHY-MASS SPECTROSCOPY ANALYSIS OF PHYTOCHEMICAL CONSTITUENTS OF METHANOLIC EXTRACT OF NEEDLES OF PINUS WALLICHIANA [PDF]

open access: yes, 2016
Objective: To investigate the phytoconstituents of methanolic extracts of a conifer Pinus wallichiana using gas chromatography-mass spectroscopy(GC-MS), which is famous for its timber quality, resins and oils.Methods: The present investigation was ...
JOSHI, SWATI, Kumar, Navin, RAI, NISHANT
core   +1 more source

C-GC-MS and its application to crude oil analysis [PDF]

open access: bronze, 1989
Paul A. Comet, Scott Ooi, Ann-Chee Yap
openalex   +1 more source

GC–MS Combined with Fast GC E-Nose for the Analysis of Volatile Components of Chamomile (Matricaria chamomilla L.)

open access: yesFoods
Chamomile has become one of the world’s most popular herbal teas due to its unique properties. Chamomile is widely used in dietary supplements, cosmetics, and herbal products. This study aimed to investigate the volatile aromatic components in chamomile.
Jiayu Lu   +6 more
doaj   +1 more source

APPLICATION OF PYROLYSIS-GC/MS TO THE STUDY OF BIOMASS AND BIOMASS CONSTITUENTS [PDF]

open access: yes, 2013
Fast pyrolysis, the rapid thermal decomposition of organic material in the absence of oxygen, is a process that can be used to convert biomass into liquid fuels and chemicals.
Ware, Anne E
core   +1 more source

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