Procedure for the preparation of d-(-)- lactic acid

Details Procedure for the preparation of d-(-)- lactic acid Procedure for the preparation of d-(-)- lactic acid

C - Chemistry, Metallurgy

12

P

195/133

C12P 7/56 (2006.01)

Patent

CA 1307754

A B S T R A C T The invention relates to a procedure for the preparation of D-(-)- lactic acid in which a strain of Lactobacillus bulgaricus capable of converting lactose into D-(-)-lactic acid to an extent of more than 50 %, is cultivated in a medium containing lactose or a hydro- lysis product thereof. It was known that galactose-positive Lacto- bacillus strains produce mainly L-lactic acid, and galactose- negative strains produce D-(-)-lactic acid almost exclusively, but leave the galactose part of lactose unchanged. Strains suitable for use in the present procedure are Lactobacillus bulgaricus CBS 743.84, CBS 687.85, and CBS 688.85.

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