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Simultaneous Extraction, Derivatisation and Analysis of Varietal Thiols and Their Non-volatile Precursors From Beer

Jelley, RE; Jones-Moore, H; Guan, A; Ren, CZJ; Chen, JLY; Tonidandel, L; Larcher, R; Fedrizzi, B
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Journal article (929.3Kb)
Permanent link
http://hdl.handle.net/10292/15382
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Abstract
Varietal thiols are important contributors to the aroma profile of a wide range of beverages including beer. A methodology for the simultaneous extraction and subsequent analysis of the varietal thiols 3-sulfanylhexan-1-ol (3SH), 3-sulfanylhexylacetate (3SHA) and 4-methyl-4-sulfanylpentan-2-one (4MSP), and the non-volatile precursors 3-S-cysteinylhexan-1-ol (Cys-3SH) and 3-S-glutathionylhexan-1-ol (GSH-3SH) in beer was developed and validated for the first time. The method, which utilises LC-MS/MS, was successfully tested on nine commercial beers, showing it to be widely applicable to this matrix. The syntheses of the novel internal standards d8-3SH and d8-3SHA, which allow a robust and accurate quantification of the hydronated congeners, are also reported. The simplicity of the QuEChERS-based (Quick, Easy, Cheap, Effective, Rugged and Safe) extraction allows for rapid, high throughput analyses suitable for both research and industry applications.
Keywords
QuEChERS; Ebselen derivatisation; Aroma; Alcoholic beverage; LC-MS/MS
Date
July 15, 2022
Source
LWT, Volume 164, 15 July 2022, 113563.
Item Type
Journal Article
Publisher
Elsevier
DOI
10.1016/j.lwt.2022.113563
Publisher's Version
https://www.sciencedirect.com/science/article/pii/S0023643822004984
Rights Statement
© 2022 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by nc-nd/4.0/).

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