| 摘要 |
PROBLEM TO BE SOLVED: To provide a yeast having improved lactic acid production ability in lactic acid fermentation production using a yeast having a lactic acid decarboxylase introduced thereinto, and to provide a method for producing lactic acid with the yeast. SOLUTION: The yeast in which the activity of pyruvic acid decarboxylase is temperature-dependently changed by mutation such as the deletion, replacement or insertion of a part of DNA encoding the pyruvic acid decarboxylase, and is integrated with a gene encoding a lactic acid dehydrogenase. The method for producing the lactic acid is characterized by culturing the yeast in the presence of a sugar and then collecting the lactic acid from the culture solution. COPYRIGHT: (C)2008,JPO&INPIT
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