OATAO - Open Archive Toulouse Archive Ouverte Open Access Week

Impact of inhibitory peptides released by Saccharomyces cerevisiae BDX on the malolactic fermentation performed by Oenococcus oeni Vitilactic F

Rizk, Ziad and El Rayess, Youssef and Ghanem, Chantal and Mathieu, Florence and Taillandier, Patricia and Nehme, Nancy Impact of inhibitory peptides released by Saccharomyces cerevisiae BDX on the malolactic fermentation performed by Oenococcus oeni Vitilactic F. (2016) International Journal of Food Microbiology, 233. 90-96. ISSN 0168-1605

[img]
Preview
(Document in English)

PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
770kB

Official URL: https://doi.org/10.1016/j.ijfoodmicro.2016.06.018

Abstract

A previous study has shown that the malolactic fermentation (MLF) was inhibited during sequential fermentations performed with the pair Saccharomyces cerevisiae BDX/Oenococcus oeni Vitilactic F in synthetic grape juices. A yeast peptidic fraction with an apparent MW of 5-10kDa was involved in the inhibition. In the present study, the MLF was also inhibited in Cabernet Sauvignon and Syrah wines. The inhibition due to the peptidic fraction was maintained despite high phenolic contents. Kinetic studies showed that the peptidic fraction was gradually released during the alcoholic fermentation (AF). Its highest anti-MLF effect was reached when isolated from late stages of the AF stationary phase. The peptidic fraction was tested in vitro on cell-free bacterial cytosolic extracts containing the malolactic enzyme in a pH range between 3.5 and 6.7. Results showed that it was able to directly inhibit the malolactic enzyme activity with an increasing inhibitory kinetic correlated to the AF time at which it was collected.

Item Type:Article
HAL Id:hal-01907324
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Other partners > Lebanese University - LU (LEBANON)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Holy Spirit University of Kaslik - USEK (LEBANON)
Other partners > Lebanese Agricultural Research Institute - LARI (LEBANON)
Laboratory name:
Statistics:download
Deposited By: Loetitia MOYA
Deposited On:23 Oct 2018 13:38

Repository Staff Only: item control page