Mitsubishi Gas Chemical Company, Inc.

Torakazu Tahara

Shigeki Imagawa

Takako Uchiyama

Akinori Tanaka

Masaharu Doya

Teizi Urakami

Tsuneo Yamane

Shunsaku Ueda

Hiroyuki Iesaka

Iwao Terao

Shunichiro Minagawa

Yoshiharu Tokunaga

A method for producing L-allysine acetal represented by general formula (II), comprising reacting D,L-allysinamide acetal represented by general formula (I) with cells of microorganism or treated cell product having an activity of stereoselectively hydrolyzing L-allysinamide acetal,

Method for producing L-allysine acetal

Disclosed is a process for accumulating a poly-3-hydroxy butyric acid in bacterial cells by continuously fermenting a methanol-assimilating bacterium having a capability of producing a poly-3-hydroxy butyric acid, in a single fermentation vessel by using methanol as carbon source at a limited feeding rate of nitrogen, phosphorus, or potassium such that the retention time for the fermentation is more than 10 hours.

Process for production of bacterial cells containing poly-3-hydroxy

Disclosed is a process for the preparation of a copolymer, which comprises propagating cells of a bacterium having a capacity of producing poly-3-hydroxybutyrate mainly at a former stage, synthesizing and accumulating in the cells a copolymer comprising D-3-hydroxybutyrate and D-3-hydroxyvalerate by contacting the bacterium with a mixture of a carbon source utilizable by the bacterium and a primary alcohol having 3 to 7 carbon atoms, or with a primary alcohol having 3 to 7 carbon atoms, at a latter stage, and recovering the copolymer from the cells. According to this process, a copolymer comprising D-3-hydroxybutyrate and D-3-hydroxyvalerate can be manufactured in a large quantity at a low cost.

Process for preparation of copolymer

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Niigata, Japan

Torakazu Tahara