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Production of cellulases by a thermophilic fungus, Thermoascus aurantiacus A-131

Abstract

A thermophilic fungus, strain A-131, isolated from a soil sample produced cellulases in the culture fluid. The fungus (strain A-131) was identified as Thermoascus aurantiacus Miehe from its taxonomical characteristics. The cellulases of T. aurantiacus A-131 were produced constitutively without cellulase inducers. Moreover, their production was induced markedly by amorphous polysaccharides containing beta-1, 4 linkages such as alkali-treated bagasse and xylan rather than crystalline cellulose. The cultivation of T. aurantiacus A-131 at 45 degrees C with 4% alkali-treated bagasse led to the production of about 70 U/ml of CMCase after four days. The thermostability of the cellulolytic enzymes of T. aurantiacus A-131 was excellent and virtually no decreases in their activities were seen after preincubation at 60 degrees C for 24 hours. (Refs. 21).
Publication Date:
Jan 01, 1987
Product Type:
Journal Article
Reference Number:
IEAD-87-034229; EDB-88-026086
Resource Relation:
Journal Name: Agric. Biol. Chem. (Tokyo); (Japan); Journal Volume: 51:3
Subject:
09 BIOMASS FUELS; 59 BASIC BIOLOGICAL SCIENCES; CELLULASE; BIOLOGICAL VARIABILITY; ENZYME INDUCTION; BAGASSE; CELL CULTURES; FUNGI; PRODUCTION; XYLANS; AGRICULTURAL WASTES; CARBOHYDRATES; ENZYMES; GENE REGULATION; GLYCOSYL HYDROLASES; HEMICELLULOSE; HYDROLASES; O-GLYCOSYL HYDROLASES; ORGANIC COMPOUNDS; ORGANIC WASTES; PLANTS; POLYSACCHARIDES; SACCHARIDES; WASTES; 140504* - Solar Energy Conversion- Biomass Production & Conversion- (-1989); 550200 - Biochemistry
OSTI ID:
5812845
Research Organizations:
Kyowa Hakko Kogyo Co. Ltd., Asahimachi, Machida-shi, Tokyo 194, Japan. Tokyo Research Labs.
Country of Origin:
Japan
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: ABCHA
Submitting Site:
HEDB
Size:
Pages: 647-654
Announcement Date:
Dec 01, 1987

Citation Formats

Kawamori, M, Takayama, K, and Takasawa, S. Production of cellulases by a thermophilic fungus, Thermoascus aurantiacus A-131. Japan: N. p., 1987. Web.
Kawamori, M, Takayama, K, & Takasawa, S. Production of cellulases by a thermophilic fungus, Thermoascus aurantiacus A-131. Japan.
Kawamori, M, Takayama, K, and Takasawa, S. 1987. "Production of cellulases by a thermophilic fungus, Thermoascus aurantiacus A-131." Japan.
@misc{etde_5812845,
title = {Production of cellulases by a thermophilic fungus, Thermoascus aurantiacus A-131}
author = {Kawamori, M, Takayama, K, and Takasawa, S}
abstractNote = {A thermophilic fungus, strain A-131, isolated from a soil sample produced cellulases in the culture fluid. The fungus (strain A-131) was identified as Thermoascus aurantiacus Miehe from its taxonomical characteristics. The cellulases of T. aurantiacus A-131 were produced constitutively without cellulase inducers. Moreover, their production was induced markedly by amorphous polysaccharides containing beta-1, 4 linkages such as alkali-treated bagasse and xylan rather than crystalline cellulose. The cultivation of T. aurantiacus A-131 at 45 degrees C with 4% alkali-treated bagasse led to the production of about 70 U/ml of CMCase after four days. The thermostability of the cellulolytic enzymes of T. aurantiacus A-131 was excellent and virtually no decreases in their activities were seen after preincubation at 60 degrees C for 24 hours. (Refs. 21).}
journal = []
volume = {51:3}
journal type = {AC}
place = {Japan}
year = {1987}
month = {Jan}
}