Cj Cheiljedang Corporation

Won Sik Gwak

Chong Ho Lee

Young Lyeol Yang

Kyoung Min Lee

Hye Won Um

Chang Yub Oh

Hideki Murata

Hyun Ju Won

Yong Bum Seo

Su Jin Park

Su Jin Choi

Hong Xian Li

Soo An Shin

Hee Kyoung Jung

Sung Hoo Jhon

In Sung Lee

Seok Hyun Kang

Seon Hye Kim

Hyo Hyoung Lee

Soon Won Hong

Kyung Su Na

Han Won Lee

Min Sun Kang

Hongxian Li

Jin Tae Hong

Hideki Murada

Provided is a method of refining 1,5-diaminopentane, the method including preparing a fermented broth including a carbonate salt of 1,5-diaminopentane; preparing a first composition by heating the fermented broth; preparing a second composition and an evaporation residue by evaporating the first composition; preparing a third composition by adding water to the evaporation residue and evaporating the water; and recovering 1,5-diaminopentane by distilling the second composition and the third composition.

Method of purifying 1,5-diaminopentane

A method for purifying 1,4-diaminobutane comprising the steps of: separating a second composition including carbonate salt of 1,4-diaminobutane from a first composition including carbonate salt of 1,4-diaminobutane by distillation; and removing carbonate from carbonate salt of 1,4-diaminobutane included in the second composition to recover 1,4-diaminobutane.

Method for purifying 1,4-diaminobutane

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

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

The present invention relates to a method for separating and purifying 1,4-diaminobutane at high purity and high yield from a fermented solution comprising 1,4-diaminobutane, through cell mass removement, desalination, concentration, impurities removal, and recovery. Also, provided is a method for separating and purifying 1,4-diaminobutane at high purity and high yield from a fermented solution 1,4-diaminobutane, through cell mass removement, desalination, low-temperature concentration, crystallization, filtration, high-temperature concentration and distillation.

Method for separating and purifying 1,4-diaminobutane from fermented solution

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Yongin-si, South Korea

Won Sik Gwak