Biosynthesis and Control of Keratinase in Recalcitrant Feather-Degrading Bacillus megaterium F7-1
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چکیده
منابع مشابه
Efficient Degradation of Feather by Keratinase Producing Bacillus sp.
Keratinase producing microorganisms are being increasingly utilized for degradation and recycling of poultry feather waste. Two native strains BF11 (Bacillus subtilis) and BF21 (Bacillus cereus) degrading keratin completely were characterized. The native strains produced more than 10 KU/mL of enzyme. Strain improvement resulted in isolation of MBF11 and MBF21 from BF11 and BF21 isolates, respec...
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 کاملBiosynthesis of dipicolinic acid in Bacillus megaterium.
Very little is known of the precursors of the dipicolinic acid (pyridine-2,6-dicarboxylic acid) in bacterial spores. C'4-2,6-diaminopimelic acid was shown to contribute to the formation of dipicolinic acid in Bacillus cereus var. mycoides (Perry and Foster, 1955; Foster, 1956) but the efficiency of the conversion was low, possibly because of a slow penetration of the cells by the exogenously su...
متن کاملBiosynthesis of Nucleic Acids in Bacillus megaterium
So-called 'chromatin b)odies' have been observed in whole cells, protoplasts and spores of Bacillus megaterium by cytological and electron-microscopical techniques (Fitzjames, 1953, 1958; Robinow, 1956). In ultra-thin sections of whole cells the chromatin body appears as an area less electron-dense than the surrounding cytoplasm and made up of a network of fine fibrils with no bounding membrane...
متن کاملInternational Journal of Pharma and Bio Sciences IMPACT OF NEWLY ISOLATED BACILLUS MEGATERIUM (A1) ON DEGRADATION OF FEATHER WASTE
Feather keratin is highly resistant to degradation, but some keratinase producing microorganisms can easily degrade these insoluble keratins. These keratinase producing species have an important application in removal of poultry waste and recycled into valuable byproduct. A feather-degrading bacterium with high keratinase activity was isolated and identified as Bacillus megaterium (A1). The sel...
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ژورنال
عنوان ژورنال: Journal of Environmental Science International
سال: 2010
ISSN: 1225-4517
DOI: 10.5322/jes.2010.19.9.1077