National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Bioconversion of insoluble Keratin-rich waste in to soluble value added product is an alternative way for recycling recalcitrant waste from poultry and leather industries. Microbial keratinases are more prominent which target the hydrolysis of keratin. Immobilization of the cell/ enzyme is an approach known to increase the application potential of biocatalysts for recycling of the cells and increase the efficiency of enzyme utilization. In present investigation effect of various matrices to immobilize Bacillus cells for the production of Keratinase was studied. Matrices like sodium alginate, polyacrylamide, agar-agar and gelatin were used. Keratinase activity of immobilized alginate beads was significantly higher (424 - 385 KU/ml) when compared to polyacrylamide (237-208KU/ml), gelatin (128-78KU/ml), agar-agar blocks (237-103KU/ml), both in terms of activity and stability of beads. Sodium alginate immobilized Bacilli were efficient in the production of Keratinase bringing 100% degradation of feather in 4-5 days similar to free cells. Further cells could be recycled up to 3 batches over 21 days, especially sodium alginate beads are repeatedly used which can withstand disintegration of bead stability making the process economical and viable.
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