Results 21 to 30 of about 165,992 (261)
Metabolites, 2020 Headspace-solid phase microextraction gas chromatography-mass spectrometry (HS-SPME-GC-MS) can be used to measure volatile organic compounds (VOCs) in human urine.
Prashant Aggarwal +5 more
doaj +1 more source
Foods, 2023 Volatile organic compounds (VOCs) make up milk flavor and are essential attributes for consumers to evaluate milk quality. In order to investigate the influence of heat treatment on the VOCs of milk, electronic nose (E-nose), electronic tongue (E-tongue)
Ning Yuan +4 more
semanticscholar +1 more source
HS-SPME Combined with GC-MS/O to Analyze the Flavor of Strong Aroma Baijiu Daqu
Foods, 2022 Daqu has gained wide attention because it is an essential source of microorganisms and flavor in baijiu production. In this study, HS-SPME combined with GC-MS/O was used to analyze the volatile flavor components of Strong aroma baijiu Daqu.
Zhe Wang +8 more
semanticscholar +1 more source
Food Chemistry, 2019 Although Nordic wild edible mushrooms offer a wide range of different odors their scientific examination has been scarce. The aim of this study was to characterize the aroma compounds of four Finnish wild mushroom species with trained assessors using gas chromatography-olfactometry as well as gas chromatography-mass spectrometry.
Hopia Anu +4 more
openaire +3 more sources
Floral Scent Composition of Plumeria Tuberculata Analyzed by HS-SPME [PDF]
Natural Product Communications, 2012 The headspace volatile compounds of the flowers of Plumeria tuberculata Lodd. were analyzed by solid phase microextraction coupled with capillary gas chromatography/mass spectrometry. Twenty-five compounds were identified, representing 100% of the total composition. The volatile fraction was characterized by oxygenated monoterpenes (79.6%), oxygenated
Disnelys, Báez +2 more
openaire +2 more sources
Potentialities of two solventless extraction approaches—Stir bar sorptive extraction and headspace solid-phase microextraction for determination of higher alcohol acetates, isoamyl esters and ethyl esters in wines [PDF]
, 2009 A stir bar sorptive extraction with liquid desorption followed by large volume injection coupled to gas chromatography–quadrupole mass spectrometry (SBSE-LD/LVI-GC–qMS) was evaluated for the simultaneous determination of higher alcohol acetates (HAA ...
Câmara, J. S. +2 more
core +1 more source
Revista Colombiana de Investigaciones Agroindustriales, 2016 In the present research, an analytical methodology to micro scale based on the use of the HS-SPME/GC-MS to determine volatile compounds present in Clinopodium gilliesii (Benth.) Kuntze (Lamiaceae) was employed, and settled differences and similarities ...
Ana María Vázquez +5 more
doaj +1 more source
Applied Sciences, 2023 For oenological products, most of the intrinsic and extrinsic drivers of perceived quality are associated with specific aromatic profiles. Aromatic diversity has been recognized as a central element in perceived quality as it is able to transmit the ...
Carmen Tesoro +10 more
doaj +1 more source
A chromatographic approach to distinguish Gram-positive from Gram-negative bacteria using exogenous volatile organic compound metabolites [PDF]
, 2017 This paper utilized L-alanine aminopeptidase activity as a useful approach to distinguish between Gram-negative and Gram-positive bacteria. This was done using two enzyme substrates, specifically 2-amino-N-phenylpropanamide and 2-amino-N-(4-methylphenyl ...
Dean, John +6 more
core +2 more sources
Foods, 2022 Compared with spring tea, summer tea has the advantages of economy and quantity. However, research on the aroma characteristics of summer tea is currently limited. In this study, summer fresh tea leaves (castanopsis. sinensis, cv.
Jiyuan Xu +9 more
semanticscholar +1 more source