期刊
AUSTRALIAN JOURNAL OF GRAPE AND WINE RESEARCH
卷 27, 期 1, 页码 81-86出版社
WILEY
DOI: 10.1111/ajgw.12464
关键词
Brettanomyces bruxellensis; cinnamoyl esterase; Oenococcus oeni; wine ageing; rho-coumaric acid
资金
- Northwest Center for Small Fruits Research
- Oregon Wine Research Institute
This study compared the impact of Oenocococcus oeni and chemical hydrolysis on the concentration of rho-coumaric acid in wine, finding that O. oeni had a more significant effect. Additionally, it was highlighted that the use of CE (+) O. oeni strains should be avoided in wines at risk of Brettanomyces spoilage.
Background and Aims: This study compared changes in the concentration of rho-coumaric acid in wine because of enzymatic hydrolysis of rho-coutaric acid byOenocococcus oeniwith that of chemical hydrolysis during ageing. Methods and Results: Malolactic fermentation of a Pinot Noir wine with a cinnamoyl esterase-positive (CE+)O. oenistrain resulted in a significant increase in rho-coumaric acid concentration. No significant change in rho-coumaric acid concentration occurred during ageing regardless of wine pH, ethanol concentration or storage temperature. Brettanomyces bruxellensis produced a significantly higher concentration of volatile phenols in wines that underwent malolactic fermentation with the CE (+)O. oenistrain than with the CE (-) strain. Conclusions: TheO. oenistrain had significantly more impact on wine rho-coumaric acid concentration than chemical hydrolysis during ageing. Significance of the Study: The use of CE (+)O. oenistrains should be avoided in wines at risk of Brettanomyces spoilage because of an increase in the concentration of the volatile phenol precursor, rho-coumaric acid.
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