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Published on: December 30, 2021
Bioconversion of agro-food industrial wastes into value-added peptides by a Bacillus sp. Mutant through solid-state
Jamila A Tuly1, Hossain M Zabed1, Abdul-Sattar Nizami2
1School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China.
Abstract:
Advances in microbial enzyme technology offer a significant opportunity for developing low-energy bioconversion solutions for industrial wastes as inexpensive feedstocks for useful products. In this short communication, two agro-food industrial wastes, chicken feather powder (CFP) and okara, were converted into peptides by a Bacillus licheniformis mutant using solid-state fermentation (SSF). The optimum SSF conditions for okara to CFP ratio, inoculum size, and time were 0.7 (7:10), 15%, and 90 h, respectively, which produced 185.99 mg/g peptides, with 910.12 U/g keratinase activity and 85.03% antioxidant scavenging activity. Compared to okara, CFP with mutant strain showed 11.28% higher keratinase activity and produced higher amounts of peptides (5.51%).
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