NO943612L - Delignification mixture exhibiting activity, preparation and use - Google Patents

Delignification mixture exhibiting activity, preparation and use

Info

Publication number
NO943612L
NO943612L NO943612A NO943612A NO943612L NO 943612 L NO943612 L NO 943612L NO 943612 A NO943612 A NO 943612A NO 943612 A NO943612 A NO 943612A NO 943612 L NO943612 L NO 943612L
Authority
NO
Norway
Prior art keywords
composition
wood pulp
preparation
well
strain
Prior art date
Application number
NO943612A
Other languages
Norwegian (no)
Other versions
NO943612D0 (en
Inventor
Eugene Rosenberg
Yuval Shoham
Original Assignee
Korsnaes Ab
Technion Res & Dev Foundation
Univ Ramot
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
Priority claimed from PCT/SE1993/000269 external-priority patent/WO1993020192A1/en
Application filed by Korsnaes Ab, Technion Res & Dev Foundation, Univ Ramot filed Critical Korsnaes Ab
Publication of NO943612D0 publication Critical patent/NO943612D0/en
Publication of NO943612L publication Critical patent/NO943612L/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
    • C12N9/14—Hydrolases (3)
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
    • C12N1/22—Processes using, or culture media containing, cellulose or hydrolysates thereof
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
    • C12N9/14—Hydrolases (3)
    • C12N9/24—Hydrolases (3) acting on glycosyl compounds (3.2)
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Zoology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Genetics & Genomics (AREA)
  • Microbiology (AREA)
  • Biotechnology (AREA)
  • Biochemistry (AREA)
  • Biomedical Technology (AREA)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Molecular Biology (AREA)
  • Virology (AREA)
  • Tropical Medicine & Parasitology (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Enzymes And Modification Thereof (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

Preparat som oppviser enzymatisk aktivitet, omfat- tende en vesentlig del a-L-arabinofuranosidase- aktivitet, som har egenskapen å delignifisere tre- masse ved en pH på 8-9 og en temperatur på 65'C, er beskrevet. Nevnte preparat kan fremskaffes ved aerobisk fermentering av en Bacillus stearothermo- philus-stamme valgt fra den deponerte stamme NCIMB 40494 samt mutanter og varianter derav. Den depo- nerte stamme samt mutanter og varianter derav er omfattet av oppfinnelsen. En fremgangsmåte ved fremstilling av nevnte preparat, en fremgangsmåte omfattende behandling av tremasse med nevnte prepa- rat og tremasse som har blitt behandlet med nevnte preparat, samt også nevnte preparat i assosiasjon med et preparat som oppviser enzymatisk aktivitet dannet av en annen mikrobiell stamme og som har egenskapen å delignifisere tremasse ved en tempera- tur på 65"C og en pH på minst 9, er beskrevet. Anvendelse av et enzym uttrykt av den deponerte stamme og o-L-arabinofuranosidase som omfatter en eller to angitte partialsekvenser og homologer derav, er også innbefattet.Preparations exhibiting enzymatic activity, comprising a substantial portion of α-L-arabinofuranosidase activity, which has the property of delignifying wood pulp at a pH of 8-9 and a temperature of 65 ° C, are described. Said preparation may be obtained by aerobic fermentation of a Bacillus stearothermophilus strain selected from the deposited strain NCIMB 40494 as well as mutants and variants thereof. The deposited strain as well as mutants and variants thereof are encompassed by the invention. A method of preparing said composition, a process comprising treating wood pulp with said composition and wood pulp which has been treated with said composition, as well as said composition in association with a composition exhibiting enzymatic activity formed by another microbial strain and which The property of delignifying wood pulp at a temperature of 65 ° C and a pH of at least 9 has been described. Use of an enzyme expressed by the deposited strain and oL-arabinofuranosidase comprising one or two specified partial sequences and homologues thereof is also disclosed. included.

NO943612A 1992-03-31 1994-09-29 Delignification mixture exhibiting activity, preparation and use NO943612L (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9201006A SE501096C2 (en) 1992-03-31 1992-03-31 Delignifying preparations exhibiting alpha-L-arabinofuranosidase activity, preparation and application thereof
PCT/SE1993/000269 WO1993020192A1 (en) 1992-03-31 1993-03-30 DELIGNIFYING PREPARATION EXHIBITING α-L-ARABINOFURANOSIDASE ACTIVITY, PRODUCTION AND APPLICATION THEREOF

Publications (2)

Publication Number Publication Date
NO943612D0 NO943612D0 (en) 1994-09-29
NO943612L true NO943612L (en) 1994-11-28

Family

ID=20385804

Family Applications (1)

Application Number Title Priority Date Filing Date
NO943612A NO943612L (en) 1992-03-31 1994-09-29 Delignification mixture exhibiting activity, preparation and use

Country Status (12)

Country Link
EP (1) EP0633932A1 (en)
JP (1) JPH07508162A (en)
KR (1) KR950701381A (en)
AU (1) AU3913093A (en)
BR (1) BR9306158A (en)
CA (1) CA2132335A1 (en)
CZ (1) CZ239494A3 (en)
FI (1) FI944501A (en)
HU (1) HUT70460A (en)
NO (1) NO943612L (en)
SE (1) SE501096C2 (en)
SK (1) SK118594A3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4683531B2 (en) * 2004-11-02 2011-05-18 明治製菓株式会社 Novel α-L-arabinofuranosidase and method of using the same

Also Published As

Publication number Publication date
HUT70460A (en) 1995-10-30
SE9201006L (en) 1993-10-01
JPH07508162A (en) 1995-09-14
SE501096C2 (en) 1994-11-14
FI944501A0 (en) 1994-09-28
SK118594A3 (en) 1995-07-11
CA2132335A1 (en) 1993-10-14
SE9201006D0 (en) 1992-03-31
BR9306158A (en) 1998-06-23
KR950701381A (en) 1995-03-23
FI944501A (en) 1994-09-28
HU9402800D0 (en) 1995-01-30
NO943612D0 (en) 1994-09-29
EP0633932A1 (en) 1995-01-18
AU3913093A (en) 1993-11-08
CZ239494A3 (en) 1995-01-18

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