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J Food Sci

Title:		Characterization of the volatility of flavor compounds in alcoholic beverages through headspace solid-phase microextraction (HS-SPME) and mathematical modeling
Author(s):		Khio SW; Cheong MW; Zhou W; Curran P; Yu B;
Address:		"Department of Chemistry, Food Science and Technology Programme, National University of Singapore, Singapore"
Journal Title:		J Food Sci
Year:		2012
Volume:		20111202
Issue:		1
Page Number:		C61 - C70
DOI:		10.1111/j.1750-3841.2011.02474.x
ISSN/ISBN:		1750-3841 (Electronic) 0022-1147 (Linking)
Abstract:		"The volatility of flavor compounds (10 distinctive esters commonly found in alcoholic beverages) was characterized using headspace solid-phase microextraction (HS-SPME) analysis combined with mathematical modeling. The impacts of extrinsic factors (extraction time and temperature) and intrinsic parameters (ethanol content and concentration of these flavor compounds) were evaluated on their influences. From extraction profiles, different kinetic behaviors of flavor compounds revealed that volatility is influenced by chemical natures (that is, molecular weight and physicochemical properties). Moreover, volatility was also found to be interrelated with extraction temperature and absorption/adsorption on the fiber's surface. Through mathematical modeling, the kinetic constants of these volatile compounds were computed, and their release profiles were determined. Finally, it was observed that an increase of ethanol (a competitive interference compound to flavor compounds) could decrease the extraction efficiency. Our studies indicated that this approach might be a rapid and practical method that would provide a better understanding of flavor release behavior from alcoholic beverages. PRACTICAL APPLICATION: The proposed approach may provide a simple and fast method in predicting the performance of key aroma esters in different alcoholic beverages. It could also be a practical way in quality control during the production of alcoholic beverage by monitoring key aroma esters"
Keywords:		"Alcoholic Beverages/*analysis Chemical Phenomena Ethanol/chemistry Fatty Acids, Volatile/analysis/chemistry Flame Ionization Gas Chromatography-Mass Spectrometry Hot Temperature Kinetics *Models, Chemical Molecular Weight Odorants Osmolar Concentration Re;"
Notes:		"MedlineKhio, Shuh-Wen Cheong, Mun-Wai Zhou, Weibiao Curran, Philip Yu, Bin eng Comparative Study Research Support, Non-U.S. Gov't 2011/12/03 J Food Sci. 2012 Jan; 77(1):C61-70. doi: 10.1111/j.1750-3841.2011.02474.x. Epub 2011 Dec 2"