Effect of Unsaturated Fatty Acids on Intra-Metabolites and Aroma Compounds of Saccharomyces cerevisiae in Wine Fermentation

Liu, Peitong and Ivanova, Violeta and Duan, Changqing and Yan, Guoliang (2021) Effect of Unsaturated Fatty Acids on Intra-Metabolites and Aroma Compounds of Saccharomyces cerevisiae in Wine Fermentation. Foods, 10 (277). pp. 2-16.

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Official URL: https://www.mdpi.com/2304-8158/10/2/277

Abstract

The small changes in concentration of unsaturated fatty acids (UFAs) cause a signiﬁcant
inﬂuence on the aromatic component of wines. In this work, the effect of UFAs mixture (including
linoleic, oleic, and �-linolenic acids) addition on intra-metabolites and aromatic compounds of
two Saccharomyces cerevisiae strain EC1118 and BDX were investigated in red wine fermentation,
respectively. The results showed that the pre-fermentative addition of UFAs signiﬁcantly modiﬁed
the physiological and energetic state of cells, and affected the levels of intra-metabolites in glycolysis
pathway and TCA cycle, redox balance, ATP pool, fatty acids, and amino acids metabolism, which
consequently altered the chemical and volatile composition of the wines. Different with the control
wine, the wines produced by UFAs addition were characterized with higher amounts of glycerol,
C6-alcohols and higher alcohols, and lower levels of acetic acid, medium-chain fatty acids, and
acetate esters. Interestingly, the production of ethyl esters showed opposite proﬁles in different
strains due to the distinct expression of EEB1, indicating that the effect of UFAs on ethyl esters
syntheses is strain-speciﬁcity. Our results highlighted the effectiveness of modulating UFAs content
in shaping aroma characteristics, and veriﬁed that ﬁne adjusting the content of UFAs combined with
inoculating proper yeast is a promising strategy to modulate the aromatic quality of wine, which
probably provides an alternative approach to meet the expectations of wine consumers for diverse
aromatic qualities.

Item Type:	Article
Impact Factor Value:	4.350
Subjects:	Natural sciences > Chemical sciences Agricultural Sciences > Other agricultural sciences
Divisions:	Faculty of Agriculture
Depositing User:	Violeta Ivanova Petropulos
Date Deposited:	22 Nov 2021 07:43
Last Modified:	22 Nov 2021 07:43
URI:	https://eprints.ugd.edu.mk/id/eprint/28787

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