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. 09, 1999
Filed:
Mar. 28, 1997
Applicant:
Inventors:
Assignee:
Gist-Brocades, B.V., Ma Delft, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12N / ; C12P / ; A23L / ; A61K / ;
U.S. Cl.
CPC ...
4352542 ; 4352551 ; 435 67 ; 424 9351 ; 426 62 ; 426540 ; 426805 ; 426807 ;
Abstract
The present invention provides Phaffia rhodozyma strains having increased levels of astaxantin and a low percentage of 3-hydroxy-3',4'-didehydro-.beta.,.psi.-caroten-4-one (HDCO). Such strains are obtained by a combination of mutagenesis and selection. The invention further provides a method for obtaining such strains. The invention also provides astaxanthin obtained from a mutagenized strain of Phaffia rhodozyma characterized in that it contains a decreased relative amount of HDCO.