The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 05, 2010
Filed:
Apr. 13, 2006
Duck-keun Han, Gunsan, KR;
Jong-kyu Choi, Jeonju, KR;
Il-kwon Hong, Gunsan, KR;
Hyun-ho Kim, Gunsan, KR;
Jong-soo Choi, Gangseo-Gu, KR;
Tae-hui Kim, Gunsan, KR;
Sung Hyun Kim, Gunsan, KR;
Duck-Keun Han, Gunsan, KR;
Jong-Kyu Choi, Jeonju, KR;
Il-Kwon Hong, Gunsan, KR;
Hyun-Ho Kim, Gunsan, KR;
Jong-Soo Choi, Gangseo-Gu, KR;
Tae-Hui Kim, Gunsan, KR;
Sung Hyun Kim, Gunsan, KR;
Paik Kwang Industrial Co., Ltd., Jeollabuk-Do, KR;
Abstract
The invention relates to a method for recovering a basic amino acid from the fermentation liquor of a micro-organism strain that produces the basic amino acid. The method comprises the following steps: a) isolation of the micro-organisms from the fermentation liquor and b) separation of the basic amino acid from the aqueous liquor that has been obtained in step a) by the successive charging of a single or multiple stage arrangement of a strongly acidic cation exchanger in the form of a salt with the liquor obtained in step a) and the elution of the basic amino acid. According to the invention, prior to the charging process in step b), the aqueous liquor has a pH value ranging between 4 and 7.5 and at least the first stage of the carbon exchanger arrangement is pre-treated with an aqueous acid in such a way that at the end of said pre-treatment, the pH value at the discharge of the pre-treated cation exchanger ranges between 4.5 and 7.