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:
Mar. 25, 1997
Filed:
Jun. 01, 1995
Applicant:
Inventors:
Chin-Hang Shu, Hsin Chu Hsien, TW;
Chuen-Yang Yeh, Hsin Chu Hsien, TW;
Pei-Ming Wang, Kao Hsiung, TW;
Chii-Cherng Liao, Hsin Chu, TW;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12P / ;
U.S. Cl.
CPC ...
435108 ; 435843 ;
Abstract
The present invention provides a process for L-phenylalanine fermentation by coryneform bacterium. The present invention successfully applies an oxystat to control the timing of feeding of molasses so as to maintain low dissolved oxygen tension and low substrate concentrations during the course of fermentation. The oxystat improves fermentation productivity appreciably. Furthermore, the present invention discovers that the proper increases of the oxygen supply rate to the culture decreases product feedback inhibition of phenylalanine formation as phenylalanine concentration increases.