Process for producing 2-keto-L-gulonic acid using electrodialysis

U.S. Patent Number: 5747306

Abstract: In a microbial process for producing 2-keto-L-gulonic acid (hereinafter sometimes referred to as 2KGA) by fermentation or microbial cell reaction with at least one microorganism capable of producing 2KGA, wherein the improvement comprises taking out, from the fermentation broth or microbial cell reaction mixture, the produced 2KGA alone or together with a low molecular-weight cation as the counter ion by electrodialysis.

Inventors: Oka; Masahide (Kawanishi, JP); Yoneto; Kenkichi (Kobe, JP); Yamaguchi; Takamasa (Kobe, JP)

Assignee: Takeda Chemical Industries, Ltd. (Osaka, JP)

Application Number: 08/517,660

Issued: 1998-05-05

Expired: 2006-05-05

Classes: 435/138 ; 426/239; 435/42

Field of search: 435/138,17,42 204/182.3,182.4,182.5,186.4 426/239

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