Recovery and purification of lactate salts from whole fermentati

Details Recovery and purification of lactate salts from whole fermentati Recovery and purification of lactate salts from whole fermentati

1988-04-19

1989-12-05

Richman, Barry S.

Chemistry: molecular biology and microbiology

Micro-organism, tissue cell culture or enzyme using process...

Preparing oxygen-containing organic compound

435261, 2041824, 2041826, C12P 756

Patent

active

048852473

ABSTRACT:
A process for producing, recovering and purifying lactate from a fermentation broth so that it can be efficiently and economically converted to lactic acid is disclosed. The process comprises growing a high lactate producing, microorganism on an inexpensive substrate until a whole broth containing about 75 to about 90 grams of lactate salt is obtained. The whole broth including the viable cells is then electrodialyzed in a unit having anionic-permeable and cationic-permeable membranes to cause the lactate salt to concentrate in an aqueous liquid which can be treated to convert the lactate salt to lactic acid.

REFERENCES:
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patent: 4698303 (1987-10-01), Bailey et al.
patent: 4711722 (1987-12-01), Toyoski et al.
Hongo, M., Nomura, Y. and M. Iwahara, "Novel Method of Lactic Acid Production by Electrodialysis Fermentation", Appl. Environ. Microbiol. 52, 2, 314-319, Aug. 1986.
Nomura, Y., Iwahara, M. and M. Hongo, "Lactic Acid Production by Electrodialysis Fermentation Using Immobilized Growing Cells", Biotechnol. & Bioeng. 30, 788-793, Oct., 1987.
"AQUATECH" System, Product Brochure, Allied Signal Corporation, 1985.

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