Screening,Identification of a Bacteria Strain for the Production of L-lactic Acid

Abstract:

A bacteria strain was isolated and identified for L-lactic acid production in this study,The isolated strain was identified as Bacillus coagulans based on the results of 16S rDNA,the physiological characteristics and the biochemical properties.Then the optimum nutrient conditions was determined by the single factor experiments and list as fellows:10.5 g/dL corn syrup,1 g/dL yeast extract,1 g/dL cotton-seed protein.Furthermore,it was found that the presence of Mn2+、Fe2+ and Mg2+ in the medium can enhance L-lactic acid production.