Title: Method for producing lactic acid using solid distillers' grains and yellow water by fermentation
Application Number: 92113602 Application Date: 1992.11.28
Publication Number: 1074242 Publication Date: 1993.07.14
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C12F3/00,C12N1/20,C12P7/56
Applicant(s) Name: Liquor Distillery, Zigong City, Sichuan Prov. Address: 643000
Inventor(s) Name: Huang Shouwen, Huang Yongkang
Attorney & Agent: HUANG DAOHE LU MULIN
Abstract:
     Solid distillers' grains and yellow liquor, which are the waste of spirit winery, are used as raw materials. Its technological steps to produce lactic acid include hydrolysis, filter, concentration to obtain distillers' grains sugar, adding lactic acid bacillus liquid obtained after multi-generation habituation of lactic acid bacillus No.6009, enlargement and cultivation into the fermentd liquor of distiller's grains sugar, addition of calcium carbonate for lactic acid fermentation for about 200 hours to obtain calcium lactate, acidifying with sulfuric acid, filter to gain diluted lactic acid, and centrifugal extraction to obtain lactic acid product with 80% of lactic acid content.
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