Conclusion The present process of bioconversion of feather into feather meal is completely an enzymatic process. To the best of our knowledge, this is the only process where no additional redox has been provided. The process is not only simple and time saving but at the same time economically viable as it does not require any bioreactor for feather degradation. Thus, bulk feather can be easily recycled into feather meal using keratinase from Bacillus licheniformis ER-15 within 12h.