Loss of trans-resveratrol during storage and ageing of red wines

Journal article

Naiker, M., Anderson, S., Johnson, J. B., Mani, J. S., Wakeling, L. and Bowry, V.. (2020). Loss of trans-resveratrol during storage and ageing of red wines. Australian Journal of Grape and Wine Research. 26(4), pp. 385-387. https://doi.org/10.1111/ajgw.12449
AuthorsNaiker, M., Anderson, S., Johnson, J. B., Mani, J. S., Wakeling, L. and Bowry, V.
Abstract

Background and Aims
The concentration of free trans-resveratrol in wine is expected to increase with storage because of hydrolysis of piceid (a bound form of resveratrol). This study measured resveratrol concentration in 16 Australasian red wines ranging from 1 to 6 years old, both initially and after a storage period of 16 months under ambient conditions.

Methods and Results
During the study period, trans-resveratrol concentration decreased by an average of 76%. The decay in trans-resveratrol was first order over the tested range of wine source and vintage, with a mean trans-resveratrol bottle-storage half-life of 8 (±1 SD) months. Decay rate was remarkably independent of growing condition and year.

Conclusion
The data suggest isomerisation of trans- to cis-resveratrol via residual enzymatic activity (rather than being catalysed by light or acid).

Significance of the Study
In general, this may reduce the anticipated health benefits of the wine given that cis-resveratrol displays fewer health benefits than the trans isomer.

Keywordshealth benefits; HPLC; piceid [-3-(β-D-glucopyranoside)]; residual enzymatic activity; resveratrol
Year2020
JournalAustralian Journal of Grape and Wine Research
Journal citation26 (4), pp. 385-387
PublisherBlackwell Publishing Ltd
ISSN1322-7130
Digital Object Identifier (DOI)https://doi.org/10.1111/ajgw.12449
Scopus EID2-s2.0-85088266994
Research or scholarlyResearch
Page range385-387
Publisher's version
License
All rights reserved
File Access Level
Controlled
Output statusPublished
Publication dates
Print21 Jul 2020
Publication process dates
Accepted17 Jun 2020
Deposited10 Aug 2021
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