酿酒酵母从消耗乙醇到消耗糖/乙醇的代谢转变步骤。

Metabolic transition step from ethanol consumption to sugar/ethanol consumption by Saccharomyces cerevisiae.

作者信息

Ramon-Portugal F, Pingaud H, Strehaiano P

机构信息

Laboratoire de Génie Chimique, UMR CNRS 5503, 5, rue Paulin Talabot, Toulouse Cedex 1, 31106, France.

出版信息

Biotechnol Lett. 2004 Nov;26(21):1671-4. doi: 10.1007/s10529-004-3520-5.

DOI:10.1007/s10529-004-3520-5

PMID:15604818

Abstract

The metabolic pathway shift between only ethanol consumption to both sugar/ethanol consumption was measured by on-line analysis of respiratory quotient of a Saccharomyces cerevisiae. The experiments were carried out in a fed-batch culture under aerobic conditions. During the transition phase, respiratory quotient (RQ) profile shows that sugar can be metabolized through the fermentative pathway even to values of RQ lower than 1.

摘要

通过在线分析酿酒酵母的呼吸商来测定仅消耗乙醇到同时消耗糖/乙醇之间的代谢途径转变。实验在有氧条件下的补料分批培养中进行。在转变阶段，呼吸商（RQ）曲线表明糖可以通过发酵途径代谢，甚至在RQ值低于1时也是如此。