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https://hdl.handle.net/2440/128511
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Type: | Journal article |
Title: | Evolution and correlation of cis-2-methyl-4-propyl-1,3-oxathiane, varietal thiols, and acetaldehyde during fermentation of sauvignon blanc Juice |
Author: | Wang, X. Chen, L. Capone, D.L. Roland, A. Jeffery, D.W. |
Citation: | Journal of Agricultural and Food Chemistry, 2020; 68(32):8676-8687 |
Publisher: | American Chemical Society |
Issue Date: | 2020 |
ISSN: | 0021-8561 1520-5118 |
Statement of Responsibility: | Xingchen Wang, Liang Chen, Dimitra L. Capone, Aurélie Roland and David W. Jeffery |
Abstract: | cis-2-Methyl-4-propyl-1,3-oxathiane (cis-2-MPO) was recently identified in wine and proposed to arise from the reaction of 3-sulfanylhexan-1-ol (3-SH) and acetaldehyde. However, the evolution profile of cis-2-MPO during alcoholic fermentation (AF) and storage and its relationship with varietal thiols and acetaldehyde production were unknown. These aspects were investigated by fermenting Sauvignon blanc juice with J7 and/or VIN13 yeast strains and assessing the stability of cis-2-MPO during wine storage. Moderate to strong Pearson correlations verified similar evolution trends between acetaldehyde, 3-sulfanylhexyl acetate, and cis-2-MPO, with initial increases and a peak during the early to middle stages of AF before consecutive decreases until the end. Contrarily, 3-SH correlated moderately only at the end of AF. A consistent decrease observed for cis-2-MPO when spiked into Sauvignon blanc wine and assessed during 1-year storage revealed its general instability, but acetaldehyde addition (100 mg/L), pH 3.0, and storage at 4 °C all appeared to retain cis-2-MPO. These results have implications for wine aroma and the potential for cis-2-MPO to act as a sink (or source) for 3-SH in wine over time. |
Keywords: | 3-sulfanylhexan-1-ol 3-sulfanylhexyl acetate Vitis vinifera analysis stable isotope dilution assay thiol precursors wine aroma |
Rights: | © 2020 American Chemical Society |
DOI: | 10.1021/acs.jafc.0c03183 |
Grant ID: | http://purl.org/au-research/grants/arc/IC170100008 |
Published version: | http://dx.doi.org/10.1021/acs.jafc.0c03183 |
Appears in Collections: | Agriculture, Food and Wine publications ARC Training Centre for Innovative Wine Production publications Aurora harvest 4 |
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