Production of Cellulases by a Thermophilic Fungus, Thermoascus aurantiacus A-131(Microbiology & Fermentation Industry)

概要

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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 consitutively without cellulase inducers. Moreover, their production was induced markedly by amorphous polysaccharides containing β-1, 4 linkages such as alkali-treated bagasse and xylan rather than crystalline cellulose. The cultivation of T. Aurantiacus A-131 at 45℃ with 4% alkali-treated bagasse led to the production of about 70 U/ml of CMCase after 4 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℃ for 24 hr.
社団法人日本農芸化学会の論文
1987-03-22