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:
Feb. 01, 1994
Filed:
Aug. 09, 1991
Applicant:
Inventors:
Mitsunori Takase, Oomiya, JP;
Kouki Horikoshi, Tokyo, JP;
Assignees:
Research Development Corporation of Japan, Tokyo, JP;
Rikagaku Kenkyusho, Saitama, JP;
Morinaga Milk Industry, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C12N / ; C12N / ; C12N / ; C12N / ;
U.S. Cl.
CPC ...
435207 ; 435220 ; 4352521 ; 435822 ;
Abstract
A .beta.-galactosidase having a high thermostability is produced by Thermus sp. FERM BP-1678, FERM BP-1679, and FERM BP-1680. The .beta.-galactosidase has an optimum temperature of 75 to 85 degrees celsius, and an optimum pH of 4.5 to 6.5 and an enzymatic activity which is not lowered substantially by 50 mM each of galactose and glucose. The .beta.-galactosidase is used to hydrolyze lactose in foods, such as milk, at a high temperature at which the putrefaction by saprophytes is difficult.