Raw starch digesting .ALPHA.-amylase from Bacillus circulans F-2.
نویسندگان
چکیده
منابع مشابه
Thermostable, Raw-Starch-Digesting Amylase from Bacillus stearothermophilus.
An endospore-forming thermophilic bacterium, which produced amylase and was identified as Bacillus stearothermophilus, was isolated from soil. The amylase had an optimum temperature of 70 degrees C and strongly degraded wheat starch granules (93%) and potato starch granules (80%) at 60 degrees C.
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Mutational experiments were carried out to decrease the protease productivity of Aspergillus ficum IFO 4320 by using N-methyl-N'-nitro-N-nitrosoguanidine. A protease-negative mutant, M-33, exhibited higher alpha-amylaseactivity than the parent strain under submerged culture at 30 degrees C for 24 h. About 70% of the total alpha-amylase activity in the M-33 culture filtrate was adsorbed onto sta...
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A starch-degrading enzyme produced by the yeast Cryptococcus sp. S-2 was purified in only one step by using an alpha-cyclodextrin-Sepharose 6B column, and was characterized as an alpha-amylase (EC 3.2.1.1). The molecular mass and isoelectric point of purified alpha-amylase (AMY-CS2) were estimated to be 66 kDa and 4.2 respectively. AMY-CS2 has raw-starch-digesting and raw-starch-absorbing activ...
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ژورنال
عنوان ژورنال: Journal of the Japanese Society of Starch Science
سال: 1985
ISSN: 1884-488X,0021-5406
DOI: 10.5458/jag1972.32.142