| Title: | Quantitating Organoleptic Volatile Phenols in Smoke-Exposed Vitis vinifera Berries |
| Author(s): | Noestheden M; Thiessen K; Dennis EG; Tiet B; Zandberg WF; |
| Address: | "University of British Columbia Okanagan , Kelowna, British Columbia, Canada. Supra Research & Development , Kelowna, British Columbia, Canada" |
| ISSN/ISBN: | 1520-5118 (Electronic) 0021-8561 (Linking) |
| Abstract: | "Accurate methods for quantitating volatile phenols (i.e., guaiacol, syringol, 4-ethylphenol, etc.) in smoke-exposed Vitis vinifera berries prior to fermentation are needed to predict the likelihood of perceptible smoke taint following vinification. Reported here is a complete, cross-validated analytical workflow to accurately quantitate free and glycosidically bound volatile phenols in smoke-exposed berries using liquid-liquid extraction, acid-mediated hydrolysis, and gas chromatography-tandem mass spectrometry. The reported workflow addresses critical gaps in existing methods for volatile phenols that impact quantitative accuracy, most notably the effect of injection port temperature and the variability in acid-mediated hydrolytic procedures currently used. Addressing these deficiencies will help the wine industry make accurate, informed decisions when producing wines from smoke-exposed berries" |
| Keywords: | Fermentation Fruit/*chemistry Gas Chromatography-Mass Spectrometry Phenols/*chemistry Sensation Smoke/analysis Vitis/*chemistry Volatile Organic Compounds/*chemistry Wine/analysis Gc-ms/ms QToF Vitis vinifera acid hydrolysis dansyl chloride smoke volatile; |
| Notes: | "MedlineNoestheden, Matthew Thiessen, Katelyn Dennis, Eric G Tiet, Ben Zandberg, Wesley F eng 2017/08/30 J Agric Food Chem. 2017 Sep 27; 65(38):8418-8425. doi: 10.1021/acs.jafc.7b03225. Epub 2017 Sep 14" |
