Preparation and Properties of the Amylases Produced by Bacillus macerans and Bacillus polymyxa
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چکیده
منابع مشابه
Catabolism of protocatechuate by Bacillus macerans.
An aerobic endospore-forming bacterium, tentatively identified as a strain (JJ-lb) of Bacillus macerans, was isolated by enrichment on 4-hydroxybenzoate (4HBA), using as an inoculum soil taken from a 50 degrees C Iadho hot spring. Enzymatic analyses of cells grown on succinate and 4HBA indicated that strain JJ-1b degrades 4HBA by way of the novel protocatechuate (PCA) 2,3-dioxygenase pathway. P...
متن کاملThe endospore of Bacillus polymyxa.
The endospore of Bacillus polymyxa was originally described by Meyer (1897) in a study of a bacillus which he designated Astasia asterospora. Meyer's drawings of the spore, showing ridges and the star shaped aspect, were reproduced by Knaysi (1951) over the name Bacillus asterosporus. It has not been generally recognized that this name is synonymous with B. polymyxa (Smith, et al., 1952). So th...
متن کاملKeratinolytic Potential of Feather-Degrading Bacillus polymyxa and Bacillus cereus
Keratinolytic abilities of Bacillus polymyxa B20 and B. cereus B5esz were evaluated in liquid cultures in mineral media containing chicken feathers. Both tested strains were capable of effective liquefying and biodegradation of feather keratin, up to 56.5 – 72.1% in ten-day cultures, releasing considerable amounts of hydrolysis products. Tested bacteria were mesophilic species, producing highes...
متن کاملThe effect of aeration of amylase production by Bacillus macerans.
During the course of an investigation on the cultural conditions affecting production of amylase by Bacillus macerans, it was observed that aeration resulted in an increase in amylase yields and in an appreciable decrease in the time of incubation necessary for its production. A 5 per cent rolled oats medium buffered with 2 per cent calcium carbonate, recommended as most suitable for amvlase pr...
متن کاملGermination requirements of Bacillus macerans spores.
2-Phenylacetamide is an effective germinant for spores of five strains of Bacillus macerans, particularly in the presence of fructose. Benzyl penicillin, the phenyl acetamide derivative of penicillin, and phenylacetic acid are also good germinants. l-Asparagine is an excellent germinant for four strains. alpha-Amino-butyric acid is moderately effective. Pyridoxine, pyridoxal, adenine, and 2,6-d...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1942
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.43.4.527-544.1942