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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.:

US 10669309 B1

PDFFull Text
Date of Patent:
Jun. 02, 2020

Filed:

Aug. 15, 2017

Method for extracting epsilon-polylysine and its hydrochloride salt from fermentation broth

Applicant:

Jiangnan University, Wuxi, CN;

Inventors:

Xusheng Chen, Wuxi, CN;

Zhonggui Mao, Wuxi, CN;

Jianhua Zhang, Wuxi, CN;

Hongjian Zhang, Wuxi, CN;

Ke Wang, Wuxi, CN;

Honggang He, Wuxi, CN;

Assignee:

Jiangnan University, Wuxi, Jiangsu, CN;

Attorneys:

IPro, PLLC

Na Xu

Primary Examiner:

Christina Bradley

Int. Cl.
CPC ...
C07K 1/36 (2006.01); B01D 61/58 (2006.01); C08G 69/10 (2006.01); B01J 41/05 (2017.01); B01J 39/07 (2017.01); B01D 15/36 (2006.01); B01J 41/07 (2017.01); B01J 39/05 (2017.01); B01D 21/26 (2006.01); B01D 61/02 (2006.01); B01D 61/14 (2006.01); C07K 1/18 (2006.01); C07K 1/34 (2006.01); C07K 14/36 (2006.01); B01D 63/06 (2006.01);
U.S. Cl.
CPC ...
C07K 1/36 (2013.01); B01D 15/362 (2013.01); B01D 15/363 (2013.01); B01D 21/262 (2013.01); B01D 61/027 (2013.01); B01D 61/145 (2013.01); B01D 61/58 (2013.01); B01J 39/05 (2017.01); B01J 39/07 (2017.01); B01J 41/05 (2017.01); B01J 41/07 (2017.01); C07K 1/18 (2013.01); C07K 1/34 (2013.01); C07K 14/36 (2013.01); C08G 69/10 (2013.01); B01D 63/06 (2013.01); B01D 2311/04 (2013.01); B01D 2311/06 (2013.01); B01D 2311/2623 (2013.01);
Abstract

The present invention provides a method for extracting ε-polylysine (ε-PL) and its hydrochloride salt from fermentation broth, which belongs to the field of bio-separation engineering. ε-PL and its hydrochloride salt are produced from fermentation broth through sequential solid-liquid separation, ultrafiltration, two-stage ion exchange, nanofiltration, evaporation concentration and drying techniques. Technologies of membrane filtration and two-stage ion exchange are applied to the preparation of ε-PL and its hydrochloride salt in the present invention, and the invention are characterized by reduced cost, improved automation, and increased product yield and purity, and the method of the present invention would be more suitable for industrial production.

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Chen, Xusheng. (2020). Method for extracting epsilon-polylysine and its hydrochloride salt from fermentation broth (U.S. Patent No. 10669309). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10669309

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