期刊名称：Indian Journal of Innovations and Developments
印刷版ISSN：2277-5382
电子版ISSN：2277-5390
出版年度：2012
卷号：1
期号：3
页码：193-198
出版社：Indian Society for Education and Environment
摘要：This study illustrated that optimization of inorganic nutrients, metal ions and various cost-effective substrates yield a higher amount of solubilised protein which can be recovered from chicken feather powder by proteolytic activity of Bacillus sp. MPTK6. The test organism used in this study was isolated from feather composting soil in keratin enrichment medium at Ph 8.5. The isolate Bacillus sp. MPTK6 showed a clear zone on the keratin enriched medium. Magnesium sulphate at 0.5% yielded high protease production and solubilisation where as KH 2 PO 4 and K 2 HPO 4 exhibited the same effect at 0.3%. Zinc sulphate and ferrous sulphate (15 μg/ml) significantly stimulated the enzyme production and protein yield. Corn steep liquor (0.3%) and peptone (0.3%) exert a very strong stimulatory effect on protease yield as well as protein solubilisation.
