Method of enhancing the delignification and/or bleaching of pulp

Details Method of enhancing the delignification and/or bleaching of pulp Method of enhancing the delignification and/or bleaching of pulp

1995-04-21

1997-11-04

Lankford, Blaine

Chemistry: molecular biology and microbiology

Enzyme , proenzyme; compositions thereof; process for...

Hydrolase

435200, 435 72, 435278, C12N 926, C12N 924

Patent

active

056839111

ABSTRACT:
The present invention relates to novel xylanases purified from the microorganism, Microtetraspora flexuosa. Each biochemically unique xylanase is thermostable and has optimal activity in alkaline conditions. The present invention is also directed to methods that utilize either the whole enzyme system or one or more of the above purified thermostable xylanases obtained from Microtetraspora flexuosa. These enzymes are excellent candidates for enhancing the delignification and bleaching of pulp. Furthermore, treating the pulp with the above enzymes prior to bleaching may reduce the amount of chlorine containing and/or peroxide chemicals required in the bleaching process.

REFERENCES:
patent: 5437992 (1995-08-01), Bodie et al.
Athalye et al., "Menaquinone compositions in the Classification of Actinomadura and Related Taxa" J. of Gen. Microbiol., 130:817-823 (1984).
Chenglin et al., "studies on Actinomycete Flora and Resources in the Plateau Lakes in Yunnan" Acta Microbiol. Sin, 29(1):7-14 (1989).
Ghangas et al., "Cloning of a Thermonospora Fusa Xylanase Gene and Its Expression in Escherichia coli and Streptomyces lividans" J. Bacteriology 171(6):2963-2969 (Jun. 1989).
Irwin et al., "Characteriza5ion and Sequence of a Thermomonospora fusca Xylanase" Appl. and Envir. Microbiol. 60(3):763-770 (Mar. 1994).
Holtz et al., "Production and properties of xylanases from thermophilic actinomycete" Antonie van Leeuwenhoek 59:1-7 (1991).
Miyadoh et al., "Actinomadura malachitica and Microtetraspora viridis Are Synonyms and Should Be Transferred as Actinomadura viridis comb. Nov." J. of Syst. Bacteriol, 39(2)152-158 (Apr. 1989).
Nakamura et al., "Purification and Some Properties of an Alkaline Xylanase from Alkaliphilic Bacillus sp. Strain 41M-1" Applied and Envir. Microbiol. 59(7):2311-2316 (Jul. 1993).
Naruse et al. "New Antiviral Antibiotics, Kistamicins A and B" J. of Antibiotics (46)12:1804-1811 (Dec. 1993).
Speth et al., "Terminal Phenylalanine and Tryosine Biosyntheis of Microtetraspora glauca" Biol. Chem. Hoppe-Seyler 370:591-9 (Jun. 1989).
Toda et al., "A New Neuritogenentic Compound Bu-4514N Produced by Microtetraspora sp." J. of Antibiot. 46(6):875-883 (1993).

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