The keratinolytic enzyme of Bacillus licheniformis strain has been reported to significantly degrade melanized feather without using reducing agents . Moreover, the protein-rich wastes such as keratin, elastin, collagen, and prion proteins generated in meat processing industry were efficiently degraded by the keratinolytic enzyme E77 (Zhao et al. 2012). The mixture of keratinase with disulfide reductase of Bacillus sp. MTS demonstrated synergy to effectively degrade feather and wool wastes (Rahayu et al. 2012). Recently, Łaba et al. (2017) successfully applied crude keratinase of Bacillus cereus PCM 2849 to degrade pretreated pig bristle waste to release free amino acids. Keratinases are therefore could be an indispensable tool in the formulation of novel biomaterials for the treatment of agro-industrial wastes in an eco-friendly manner.