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Molecules

Title:		Smoked-Derived Volatile Phenol Analysis in Wine by Stir Bar Sorptive Extraction-Gas Chromatography-Mass Spectrometry
Author(s):		Yang R; Alcazar-Magana A; Qian YL; Qian MC;
Address:		"Department of Food Science and Technology, Oregon State University, Corvallis, OR 97331, USA. College of Food Science and Engineering, Jilin University, Changchun 130062, China"
Journal Title:		Molecules
Year:		2021
Volume:		20210916
Issue:		18
Page Number:		-
DOI:		10.3390/molecules26185613
ISSN/ISBN:		1420-3049 (Electronic) 1420-3049 (Linking)
Abstract:		"Smoke-derived taint has become a significant concern for the U.S. wine industry, particularly on the west coast, and climate change is anticipated to aggravate it. High volatile phenols such as guaiacol, 4-methylguaiacol, 4-ethylguaiacol, 4-ethylphenol, and o-, p-, m-cresols have been suggested to be related to smoke-exposed grape and wine. This paper describes an analytical approach based on ethylene glycol/polydimethylsiloxane (EG/PDMS)-stir bar sorptive extraction-gas chromatography-mass spectrometry (SBSE-GC-MS) to quantify or estimate the concentrations of some smoke-related volatile phenols in wines. Correlation coefficients with R(2) >/= 0.990 were obtained. This method can quantify most smoked-related volatile phenols down to 0.5 mug/L in wine in selective ion monitoring mode. Recovery for the targeted volatile phenols ranged from 72.2% to 142.4% in the smoke-tainted wine matrix, except for 4-vinylguaiacol. The standard deviations of the volatile phenols were from 0 to 23% in smoke-tainted wine. The approach provides another tool to evaluate wine smoke exposure and potential smoke taint"
Keywords:		Adsorption Calibration Chemical Fractionation/*methods Dimethylpolysiloxanes/chemistry Ethylene Glycol/chemistry Gas Chromatography-Mass Spectrometry/*methods Phenols/*analysis/*chemistry Reference Standards Reproducibility of Results Smoke Vitis/chemistr;
Notes:		"MedlineYang, Ruiwen Alcazar-Magana, Armando Qian, Yanping L Qian, Michael C eng 2019-2312/Oregon Wine Board/ 2020-2312, 2021-2312/American Vineyard Foundation/ 201906170269/China Scholarship Council/ Switzerland 2021/09/29 Molecules. 2021 Sep 16; 26(18):5613. doi: 10.3390/molecules26185613"