.alpha.-L-arabinofuranosidase and xylanase from Bacillus stearot

Details .alpha.-L-arabinofuranosidase and xylanase from Bacillus stearot .alpha.-L-arabinofuranosidase and xylanase from Bacillus stearot

1993-05-18

1995-07-18

Naff, David M.

Chemistry: molecular biology and microbiology

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

Hydrolase

43525231, 435832, 435278, C12N 924, C12N 120, C12N 100, D21C 300

Patent

active

054340713

ABSTRACT:
The invention relates to a preparation exhibiting enzymatic activity, which preparation has the capability of delignifying wood pulp at a temperature of at least 65.degree. C. and a pH of at least 9. Further, the invention relates to a method of producing said preparation by aerobically fermentating a selected Bacillus stearothermophilus strain. Furthermore, the invention relates to two isolated Bacillus stearothermophilus strains and mutants and variants thereof. The invention also relates to applications of the preparation of the invention, namely to a process comprising treatment of wood pulp with a preparation according to the invention, and a wood pulp and a fluff pulp treated with a preparation according to the invention, and also a paper, a board and a fluff made from a wood pulp treated with a preparation according to the invention.

REFERENCES:
patent: 4692413 (1987-09-01), Farrell
Song et al., Kor. J. Appl. Microbiol. Bioeng. vol. 17, No. 4, pp. 289-294, 1989.
Lee et al., Applied and Environmental Microbiology, Mar. 1993 pp. 763-771, vol. 59, No. 3.
Dobozi et al., Applied and Environmental Microbiology, vol. 58, No. 10, pp. 3466-3471, 1992.
Hespell, Current Microbiology, vol. 25, No. 4, pp. 189-195, 1992.
Grueninger et al., Enzyme Microb. Technol., vol. 8, May 1986, pp. 309-314.
Song et al., Sanop Misaengimul Hakhoechi, 17(4), 289-94, 1989.
Grueninger, World Biotech. Rep., vol. 1, 627-37, 1985.

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