Title:
NOVEL ACIDIC ALPHA-AMYLASE AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JPH10136979
Kind Code:
A
Abstract:
To solve a variety of problems in the conventional starch industry by providing an acidic α-amylase and liquefying starch under acidic and high- temperature conditions.
This acidic α-amylase has following properties: (1) substrate specificity: acting on starch to mainly produce malto-pentaose and malto- hexaose; (2) the optimal pH: about 4.0 (3) pH stability: it is stable in the pH range of 4.5-5.0 under heating at 90°C for 15 minutes; (4) temperature stability: it is stable up to 80°C, when it is kept at a pH of 4.5 for 15 minutes; (5) optimal temperature: about 80-90°C; (6) molecular weight: about 55,000-60,000 according to the gel filtration technique; and isoelectric point: about 4.2.
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Inventors:
KOJIMA IWAO
SUZUKI YUJI
RIYUU GIYOUREI
ADACHI TOMOKO
SUZUKI YUJI
RIYUU GIYOUREI
ADACHI TOMOKO
Application Number:
JP30224596A
Publication Date:
May 26, 1998
Filing Date:
November 13, 1996
Export Citation:
Assignee:
NAGASE SEIKAGAKU KOGYO KK
International Classes:
C12N9/28; C08B30/12; C12S3/02; C12R1/07; (IPC1-7): C12N9/28; C08B30/12; C12S3/02
Attorney, Agent or Firm:
Shusaku Yamamoto