Denki Kagaku Kogyo Kabushiki Kaisha

Teruzo Miyoshi

Hideaki Yamada

Masamichi Hashimoto

Hironoshin Kitagawa

Iwao Kibayashi

Masahisa Ikemi

Yoshiaki Ishimatsu

Susumu Chiba

Haruo Gomi

Masaaki Kato

Noriaki Koizumi

Haruhisa Saegusa

A method for producing sodium hyaluronate by a fermentation method comprises culturing a mutant strain FM 100 derived from Streptococcus equi and partially free from auxotrophy to thereby stably produce sodium hyaluronate and accumulating the hyaluronate. A method for producing sodium hyaluronate by a fermentation method comprises culturing a mutant strain FM 300 derived from Streptococcus equi and partially free from auxotophy to thereby stably produce sodium hyaluronate and accumulating the hyaluronate.

Method for producing sodium hyaluronate by fermentation method

Disclosed is a process for preparing L-threonine which comprises causing D-threonine-aldolase, or D-threonine-aldolase and L-allothreonine-aldolase to act on a solution containing at least DL-threonine thereby obtaining L-threonine from a mixture containing at least DL-threonine.

Process for preparing L-threonine

Growing community of inventors

Yokohama, Japan

Teruzo Miyoshi