JPS6434288A - Novel alpha-amylase and production thereof - Google Patents

Novel alpha-amylase and production thereof

Info

Publication number
JPS6434288A
JPS6434288A JP62188457A JP18845787A JPS6434288A JP S6434288 A JPS6434288 A JP S6434288A JP 62188457 A JP62188457 A JP 62188457A JP 18845787 A JP18845787 A JP 18845787A JP S6434288 A JPS6434288 A JP S6434288A
Authority
JP
Japan
Prior art keywords
alpha
amylase
straight
optimum
chainlike
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62188457A
Other languages
Japanese (ja)
Inventor
Nobuyuki Nakamura
Koki Horikoshi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Science and Technology Agency
Original Assignee
Research Development Corp of Japan
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Research Development Corp of Japan filed Critical Research Development Corp of Japan
Priority to JP62188457A priority Critical patent/JPS6434288A/en
Publication of JPS6434288A publication Critical patent/JPS6434288A/en
Pending legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Landscapes

  • Enzymes And Modification Thereof (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)

Abstract

PURPOSE:To readily obtain an alpha-amylase useful for producing industrial starch saccharides, etc., in high yield at a low cost, by cultivating a microorganism of the genus Thermus capable of producing the alpha-amylase. CONSTITUTION:A strain FERM P-8881 of the Thermus having the following mycological properties. Shape; bacillus. Gram staining property; negative. Growth pH; 5.0-8.5, etc., is aerobically cultivated in a culture medium containing pullulan, soybean cake, etc., at about 60 deg.C for 72 hr to provide a culture, which is then purified by a method for filtering, salting out, ultrafiltering, etc., to afford the aimed alpha-amylase having the following physico-chemical properties. Action; specifically hydrolyzing straight-chainlike structure of alpha-1,4- glucopyranoside bonds in the amylopectin, amylose, starch, etc., and partial hydrolyzates thereof and forming alpha-type ionomer of maltose, etc. Substrate specificity; hydrolyzing straight-chainlike malstooligosaccharides of alpha-1,4- glucopyranoside bonds having a higher polymerization degree than that of maltotetraose. Optimum pH; 5.5-6.0. Stable pH; pH 5-9 at 50 deg.C for 30min. Optimum action temperature; about 70 deg.C. Molecular weight; 135000+ or -5000, etc.
JP62188457A 1987-07-28 1987-07-28 Novel alpha-amylase and production thereof Pending JPS6434288A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62188457A JPS6434288A (en) 1987-07-28 1987-07-28 Novel alpha-amylase and production thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62188457A JPS6434288A (en) 1987-07-28 1987-07-28 Novel alpha-amylase and production thereof

Publications (1)

Publication Number Publication Date
JPS6434288A true JPS6434288A (en) 1989-02-03

Family

ID=16224040

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62188457A Pending JPS6434288A (en) 1987-07-28 1987-07-28 Novel alpha-amylase and production thereof

Country Status (1)

Country Link
JP (1) JPS6434288A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5750889A (en) * 1994-06-13 1998-05-12 Hitachi, Ltd. Air flow rate measuring apparatus and air flow rate measuring method
US5878008A (en) * 1995-02-14 1999-03-02 Hitachi, Ltd. Optical recording/reproducing method and apparatus for controlling irradiation position of an optical spot
US6064644A (en) * 1995-02-14 2000-05-16 Hitachi, Ltd. Optical recording medium having particular arrangement of prepits and manufacturing method thereof
US7072287B2 (en) 1995-02-14 2006-07-04 Hitachi, Ltd. Optical reproducing method for optical medium with aligned prepit portion

Cited By (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5750889A (en) * 1994-06-13 1998-05-12 Hitachi, Ltd. Air flow rate measuring apparatus and air flow rate measuring method
US5878008A (en) * 1995-02-14 1999-03-02 Hitachi, Ltd. Optical recording/reproducing method and apparatus for controlling irradiation position of an optical spot
US5953310A (en) * 1995-02-14 1999-09-14 Hitachi, Ltd. Optical recording medium using land/groove recording
US6064644A (en) * 1995-02-14 2000-05-16 Hitachi, Ltd. Optical recording medium having particular arrangement of prepits and manufacturing method thereof
US6195316B1 (en) 1995-02-14 2001-02-27 Hitachi, Ltd. Optical recording medium using land/groove recording
US6262968B1 (en) 1995-02-14 2001-07-17 Hitachi, Ltd. Optical information processing apparatus
US6314075B2 (en) 1995-02-14 2001-11-06 Hitachi, Ltd. Optical recording/reproducing apparatus
US6370106B2 (en) 1995-02-14 2002-04-09 Hitachi, Ltd. Optical reproduction apparatus
US6392985B2 (en) 1995-02-14 2002-05-21 Hitachi, Ltd. Optical reproduction apparatus for reproducing information from optical recording medium having wobbled address pits
US6430146B1 (en) 1995-02-14 2002-08-06 Hitachi, Ltd. Optical reproducing method
US6430142B2 (en) 1995-02-14 2002-08-06 Hitachi, Ltd. Method for reproducing information from optical medium
US6483800B2 (en) 1995-02-14 2002-11-19 Hitachi, Ltd. Optical reproduction apparatus for reproducing information from an optical recording medium having wobbled pits
US6529470B2 (en) 1995-02-14 2003-03-04 Hitachi, Ltd. Optical recording medium with aligned prepit portion
US6532207B2 (en) 1995-02-14 2003-03-11 Hitachi, Ltd. Optical reproducing method
US6538981B2 (en) 1995-02-14 2003-03-25 Hitachi, Ltd. Optical reproduction apparatus
US6538980B2 (en) 1995-02-14 2003-03-25 Hitachi, Ltd. Optical disc
US6542456B2 (en) 1995-02-14 2003-04-01 Hitachi, Ltd. Optical reproducing method
US6542457B2 (en) 1995-02-14 2003-04-01 Hitachi, Ltd. Method for reproducing information from recording medium having grooves and lands as tracks divided into units
US6545973B2 (en) 1995-02-14 2003-04-08 Hitachi, Ltd. Optical reproduction apparatus
US6549510B2 (en) 1995-02-14 2003-04-15 Hitachi, Ltd. Optical recording medium having grooves and lands
US6552994B2 (en) 1995-02-14 2003-04-22 Hitachi, Ltd. Optical reproduction apparatus
US6580685B2 (en) 1995-02-14 2003-06-17 Hitachi, Ltd. Optical recording medium with aligned prepit portion
US6603730B2 (en) 1995-02-14 2003-08-05 Hitachi, Ltd. Optical reproducing method
US6611489B2 (en) 1995-02-14 2003-08-26 Hitachi, Ltd. Information reproducing method for an optical medium having grooves and lands
US6795390B2 (en) 1995-02-14 2004-09-21 Hitachi, Ltd. Information recording method
US6845081B2 (en) 1995-02-14 2005-01-18 Hitachi, Ltd. Optical reproducing method for optical medium with aligned prepit portion
US6996054B2 (en) 1995-02-14 2006-02-07 Hitachi, Ltd. Optical reproducing method for optical medium with aligned prepit portion
US7072281B2 (en) 1995-02-14 2006-07-04 Hitachi, Ltd. Optical reproducing method for optical medium with aligned prepit portion
US7072277B2 (en) 1995-02-14 2006-07-04 Hitachi, Ltd. Optical reproducing method for optical medium with aligned prepit portion
US7072280B2 (en) 1995-02-14 2006-07-04 Hitachi, Ltd. Optical reproducing method for optical medium with aligned prepit portion
US7072288B2 (en) 1995-02-14 2006-07-04 Hitachi, Ltd. Optical reproducing method for optical medium with aligned prepit portion
US7072282B2 (en) 1995-02-14 2006-07-04 Hitachi, Ltd. Optical reproducing method for optical medium with aligned prepit portion
US7072286B2 (en) 1995-02-14 2006-07-04 Hitachi, Ltd. Optical reproducing method for optical medium with aligned prepit portion
US7072279B2 (en) 1995-02-14 2006-07-04 Hitachi, Ltd. Optical reproducing method for optical medium with aligned prepit portion
US7072287B2 (en) 1995-02-14 2006-07-04 Hitachi, Ltd. Optical reproducing method for optical medium with aligned prepit portion
US7072278B2 (en) 1995-02-14 2006-07-04 Hitachi, Ltd. Optical reproducing method for optical medium with aligned prepit portion
US7079478B2 (en) 1995-02-14 2006-07-18 Hitachi, Ltd. Optical reproducing method for optical medium with aligned prepit portion
US7082098B2 (en) 1995-02-14 2006-07-25 Hitachi, Ltd. Optical reproducing method for optical medium with aligned prepit portion
US7088652B2 (en) 1995-02-14 2006-08-08 Hitachi, Ltd. Optical recording apparatus
US7092350B2 (en) 1995-02-14 2006-08-15 Hitachi, Ltd. Optical reproducing method for optical medium with aligned prepit portion
US7092349B2 (en) * 1995-02-14 2006-08-15 Hitachi, Ltd. Optical reproducing method optical medium with aligned prepit portion
US7099263B2 (en) 1995-02-14 2006-08-29 Hitachi Ltd Optical reproducing method for optical medium with aligned prepit portion
US7151721B2 (en) 1995-02-14 2006-12-19 Hitachi, Ltd. Optical recording method using land/groove recording
US7154842B2 (en) 1995-02-14 2006-12-26 Hitachi, Ltd. Optical reproducing method for optical medium with aligned prepit portion

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