Title:
METHOD FOR PRODUCING LACTIC ACID
Document Type and Number:
Japanese Patent JP2009201506
Kind Code:
A
Abstract:
To provide a method for isolating a high purity lactic acid which is advantageous for crystallization, by removing inorganic salts and at the same time removing impurities originating from cultivation (proteins and polysaccharides) in the culture solution of a microorganism.
The method for producing lactic acid comprises a step of isolating lactic acid produced by fermentation culture of the microorganism in a culture solution, and further comprises (a) a step of filtering the culture solution through a nanofilter, and (b) a step of isolating lactic acid by crystallization.
Inventors:
KAWAMURA KENJI
TANAKA TAKASHI
MIMIZUKA TAKASHI
ITO MASATERU
SAWAI HIDEKI
YAMADA MASANARI
TANAKA TAKASHI
MIMIZUKA TAKASHI
ITO MASATERU
SAWAI HIDEKI
YAMADA MASANARI
Application Number:
JP2009014029A
Publication Date:
September 10, 2009
Filing Date:
January 26, 2009
Export Citation:
Assignee:
TORAY INDUSTRIES
International Classes:
C12P7/56; C12N15/09