Mutants of Lactobacillus paracasei Producing L-Lactic Acid with Improved Optical Purity and Their Uses

摘要

The present invention relates to a method for producing a novel Lactobacillus para- casei and L-lactic acid using the same mutant strain having an L-lactic acid fermentation activity. When a lactic acid fermentation using a moju According to the present invention and the productivity and the yield of lactic acid are similar, while, optical purity can be increased to 98% or more. In addition, the lactic acid producing composition which comprises a mutant of the invention has the advantage that it can be possible by the use of low-cost of the corn steep liquor as a nitrogen source, the fermentation cost reduction. ;