Cj Cheiljedang Corporation

Industry-University Cooperation Foundation Hanyang University

Chong Ho Lee

Won Sik Gwak

Hideki Murata

In Sung Lee

Young Lyeol Yang

Yong Bum Seo

Kyoung Min Lee

Hye Won Um

Su Jin Choi

Hee Kyoung Jung

Sung Hoo Jhon

Seon Hye Kim

Min Sun Kang

Jae Hun Yu

Hyun Ju Won

Hongxian Li

Yu Shin Kim

Ju Un Park

Chan Hun Park

Sung Yong Mun

Seung Hoon Kang

Hideki Murada

Provided are a method of refining a reaction solution including a carbonate of 1,5-diaminopentane, which is produced by fermentation, through a decarbonation step and a pH adjustment step, and 1,5-diaminopentane which is refined by the above method.

Refining method of organic amine

Provided is a method for refining quinolinic acid, including the steps of: preparing a fermentation solution including at least one of quinolinic acid and a salt thereof; removing microbial cells from the fermentation solution; preparing an acidic composition containing at least one of quinolinic acid and a salt thereof at a saturation concentration or more by adding an acid to the fermentation solution; and recovering a crystal of least one of quinolinic acid and a salt thereof from the acidic composition.

Method for refining quinolinic acid

A purification method of 1,4-diaminobutane, 1,4-diaminobutane purified using the purification method, and a polyamide prepared using the purified 1,4-diaminobutane are provided. The purification method of 1,4-diaminobutane includes: concentrating a fermentation solution including at least one of 1,4-diaminobutane and a salt thereof to obtain a concentrate; adding a base to the concentrate of the fermentation solution to prepare an basic composition having a pH 12 or higher; and recovering 1,4-diaminobutane from the basic composition.

Method for purifying 1,4-diaminobutane, 1,4-diaminobutane purified by said method, and polyamide prepared therefrom

The present invention relates to a recombinant microorganism having enhanced ability to produce putrescine at high yield, wherein the activity of NCg10101 is weakened in a microorganism of genusthat has been modified to produce putrescine, and a method for producing putrescine using the same.

Recombinant microorganism having an enhanced ability to produce putrescine and a method for producing putrescine using the same

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Seoul, South Korea

Chong Ho Lee