首页|期刊导航|中国农业科学（英文版）|The Effect of Acid Stress Treatment on Viability and Membrane Fatty Acid Composition of Oenococcus oeni SD-2a
中国农业科学（英文版）2009，Vol.8Issue(3)：311-316,6.
The Effect of Acid Stress Treatment on Viability and Membrane Fatty Acid Composition of Oenococcus oeni SD-2a
The Effect of Acid Stress Treatment on Viability and Membrane Fatty Acid Composition of Oenococcus oeni SD-2a
摘要
Abstract
To obtain ready-to-use wine malolactic starter cultures with high viability, the effects of acid stress treatments on the growth, inoculation viability, freeze-drying viability, and membrane fatty acid composition of the native Oenococcus oeni SD-2a strain were studied. The results showed that pH 3.5 and 3.2 adaptive treatments did not strongly decrease cell biomass but increased distinctly inoculation viability and freeze-drying viability. Concerning the membrane fatty acid composition, it was observed that acid stress conditions increased significantly the relative concentration of lactobacillic acid (C19cycl 1) and the unsaturated:saturated fatty acid ratio in cell membrane lipids. We assumed that acid-induced cross protective responses could be used in preparing ready-to-use O. oeni SD-2a malolactic starter cultures, and the accumulation of lactobacillic acid in the membrane of O. oeni SD-2a cells appears as an acid stress response mechanism,which might be related with the enhanced viability.关键词
Oenococcus oeni/acid stress response/membrane fatty acid compositionKey words
Oenococcus oeni/acid stress response/membrane fatty acid composition分类
农业科技引用本文复制引用
ZHAO Wen-ying,LI Hua,WANG Hua,LI Zhong-chao,WANG Ai-lian..The Effect of Acid Stress Treatment on Viability and Membrane Fatty Acid Composition of Oenococcus oeni SD-2a[J].中国农业科学（英文版）,2009,8(3):311-316,6.基金项目
This work was financed by the Key Technology R&D Program of Shaanxi Province, China (2005K02-G2). （2005K02-G2）
