METHOD FOR PRODUCING LACTIC ACID

Provided is a method for producing lactic acid which does not require neutralization and crude purification associated therewith both of which give a high load to the environment. A method for producing lactic acid, which comprises subjecting glucose to lactic acid fermentation by using a fission ye...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	TOHDA HIDEKI, HARA FUTOSHI
Format:	Patent
Sprache:	eng
Schlagworte:	BEER BIOCHEMISTRY CHEMISTRY COMPOSITIONS THEREOF CULTURE MEDIA ENZYMOLOGY FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE METALLURGY MICROBIOLOGY MICROORGANISMS OR ENZYMES MUTATION OR GENETIC ENGINEERING PROPAGATING, PRESERVING OR MAINTAINING MICROORGANISMS SPIRITS VINEGAR WINE
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Beschreibung
Zusammenfassung:	Provided is a method for producing lactic acid which does not require neutralization and crude purification associated therewith both of which give a high load to the environment. A method for producing lactic acid, which comprises subjecting glucose to lactic acid fermentation by using a fission yeast having a lactic acid fermentation ability and recovering lactic acid produced thereby, characterized in that a fermentation liquor created from an aqueous glucose solution by lactic acid fermentation is replaced with an aqueous glucose solution having a potassium ion concentration of at least 400 ppm to continue the lactic acid fermentation, and the replacement of the fermentation liquor with the potassium ion-containing aqueous glucose solution is performed at least once.