Results 171 to 180 of about 6,540 (200)
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Theory and practice of a variable dome splitter for gas chromatography-olfactometry
Journal of Chromatography A, 2013For olfactometric measurements in combination with gas chromatography a device is needed to split the GC effluent between the detector and the sniffing port. Fixed split ratios are obtained by simple flow splitters with appropriate restrictions towards the two outlets. Variable split ratios are possible with additional control flows. One such device is
Peter, Boeker +2 more
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Modeling Quality of Premium Spanish Red Wines from Gas Chromatography−Olfactometry Data
Journal of Agricultural and Food Chemistry, 2009The aroma compositions of 25 premium Spanish red wines have been screened by quantitative gas chromatography-olfactometry and have been related to the quality scores of the wines. The study has shown that up to 65 odorants can be present in the aroma profiles of those wines, 32 of which have been detected in less than half of the samples.
Vicente, Ferreira +6 more
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Journal of the Science of Food and Agriculture, 2011
AbstractBACKGROUND: Tangerines have a distinct flavor among citrus fruit. However, information on tangerine volatiles remains limited. Volatile compounds from a breeding population of tangerines were earlier identified by gas chromatography–mass spectrometry.
Takayuki, Miyazaki +4 more
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AbstractBACKGROUND: Tangerines have a distinct flavor among citrus fruit. However, information on tangerine volatiles remains limited. Volatile compounds from a breeding population of tangerines were earlier identified by gas chromatography–mass spectrometry.
Takayuki, Miyazaki +4 more
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Cumulative solid phase microextraction sampling for gas chromatography-olfactometry of Shiraz wine
Journal of Chromatography A, 2012Solid phase microextraction (SPME) coupled to gas chromatography-olfactometry (GC-O) is now commonly used for determination of aroma-active compounds, but the method sensitivity and selectivity is restricted by the small volume and limited type of fibre coating phases.
Sung-Tong, Chin +2 more
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Journal of Food Science, 2013
Abstract Nine samples of Asturias cider have been analyzed for volatile, olfactometric, and sensorial profiles. The aromatic composition was mainly constituted by fusel alcohols and ethyl esters. Among the minor volatile compounds, fatty acids, volatile phenols, and alcohols were the main components.
Picinelli Lobo, Anna +3 more
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Abstract Nine samples of Asturias cider have been analyzed for volatile, olfactometric, and sensorial profiles. The aromatic composition was mainly constituted by fusel alcohols and ethyl esters. Among the minor volatile compounds, fatty acids, volatile phenols, and alcohols were the main components.
Picinelli Lobo, Anna +3 more
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ChemInform Abstract: Gas Chromatography‐Olfactometry of Glucose‐Proline Maillard Reaction Products
ChemInform, 1994AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
D. D. ROBERTS, T. E. ACREE
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Journal of Chromatography A, 2007
A research area of great interest to the flavour industry is the analysis of odour active compounds in essential oils. In this paper, a methodology is presented for the identification of character-impact odorants in essential oil samples using (a) gas chromatography-olfactometry (GC-O); (b) comprehensive two-dimensional gas chromatography (GC x GC ...
Graham, Eyres +2 more
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A research area of great interest to the flavour industry is the analysis of odour active compounds in essential oils. In this paper, a methodology is presented for the identification of character-impact odorants in essential oil samples using (a) gas chromatography-olfactometry (GC-O); (b) comprehensive two-dimensional gas chromatography (GC x GC ...
Graham, Eyres +2 more
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Journal of Agricultural and Food Chemistry, 2007
Odor volatiles in three major lychee cultivars (Mauritius, Brewster, and Hak Ip) were examined using gas chromatography-olfactometry, gas chromatography-mass spectrometry, and gas chromatography-pulsed flame photometric detection. Fifty-nine odor-active compounds were observed including 11 peaks, which were associated with sulfur detector responses ...
Kanjana, Mahattanatawee +3 more
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Odor volatiles in three major lychee cultivars (Mauritius, Brewster, and Hak Ip) were examined using gas chromatography-olfactometry, gas chromatography-mass spectrometry, and gas chromatography-pulsed flame photometric detection. Fifty-nine odor-active compounds were observed including 11 peaks, which were associated with sulfur detector responses ...
Kanjana, Mahattanatawee +3 more
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Journal of Agricultural and Food Chemistry
Gas chromatography-olfactometry (GC-O) has made significant advancements in recent years, with breakthroughs in its applications and the identification of its limitations. This technology is widely used for analyzing complex odor patterns. The review begins by explaining the principles of GC-O, including sample preparation, separation methods, and ...
Mohamed A. A. Mahmoud, Yanyan Zhang
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Gas chromatography-olfactometry (GC-O) has made significant advancements in recent years, with breakthroughs in its applications and the identification of its limitations. This technology is widely used for analyzing complex odor patterns. The review begins by explaining the principles of GC-O, including sample preparation, separation methods, and ...
Mohamed A. A. Mahmoud, Yanyan Zhang
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Optimization of Strawberry Volatile Sampling by Direct Gas Chromatography Olfactometry
2008The aim of this work was to determine the most suitable sampling headspace technique for the study of strawberry (Fragaria ×ananassa Duch.) fruit aroma. The aromatic qualities of different headspace extracts of strawberry (‘Festival’) puree were evaluated using direct gas chromatography-olfactometry (D-GC-O), a technique that allows assessing global ...
Jouquand, Céline +3 more
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