RT Journal Article
SR Electronic
T1 Influence of Oenococcus oeni and Brettanomyces bruxellensis on Hydroxycinnamic Acids and Volatile Phenols of Aged Wine
JF American Journal of Enology and Viticulture
JO Am J Enol Vitic.
FD American Society for Enology and Viticulture
SP ajev.2016.16015
DO 10.5344/ajev.2016.16015
A1 Mikkel Gulmann Madsen
A1 Nathalia Kruse Edwards
A1 Mikael Agerlin Petersen
A1 Lucky Mokwena
A1 Jan Hendrik Swiegers
A1 Nils Arneborg
YR 2016
UL http://www.ajevonline.org/content/early/2016/08/16/ajev.2016.16015.abstract
AB In this study, the effect of two Oenococcus oeni strains, Viniflora® CiNe™ and Viniflora® CH11 with and without cinnamoyl esterase activity, respectively, on the contents of the hydroxycinnamic acids (HCAs) p-coumaric and ferulic acid and their respective volatile phenols 4-ethylphenol and 4-ethylguaiacol was investigated during a period of six months in Cabernet Sauvignon wines inoculated with two different Brettanomyces bruxellensis strains, CBS 73 and CBS 2499. Both CiNe™ and CH11 showed growth and malolactic fermentation (MLF) in the wines. There were no clear growth interactions between B. bruxellensis and O. oeni. Furthermore, B. bruxellensis did not inhibit MLF by CiNe™ or CH11. The HCA concentrations in all wines increased until 114 days of fermentation, after which they decreased from day 114 to day 180. Wines inoculated with CiNe™ had the highest concentrations of HCAs throughout the fermentations. Even though CiNe™ degraded more of the tartaric ester bound forms of HCAs into free HCAs there was no significant difference in the production of volatile phenols when comparing wines inoculated with CH11. However, there was a significant difference in the level of volatile phenols and HCAs on day 180 between wines with the two strains of B. bruxellensis. Thus, it seems that the level of volatile phenols in wine depends more on strain differences of B. bruxellensis than on cinnamoyl esterase activity of O. oeni.