Biodegradation of keratin containing wastes viz. bird feathers, nails, hairs, animalwool is a low-cost, nutrient-rich biotechnological process that turns this plentiful waste into substance. It sustainable green approach towards the solution environmental threats created by these wastes. This study aimed to screen for potential keratinase-producing microorganisms and optimize physicochemical pa...

Proteases are catabolic enzymes that catalyze the complete hydrolysis of protein. They constitute one of the most important groups of industrial enzymes, accounting for nearly 60% of the total worldwide enzyme sale1. Keratinolytic protease is a specific protease that has immense commercial importance. It acts on keratin of the hides thus can be used in dehairing2. This enzyme along with proteas...

Valorizing chicken feather agro-wastes nowadays is imperative, if these wastes are disposed of without treatment, they could contribute to environmental problems. Conventional methods processing feathers such as landfilling, chemical treatment and burning costly, non-time consumable toxic the environment. Microbial hydrolysis, on contrary, now considered main environmental-friendly recycling al...

A newly isolated bacterium identified as Bacillus safensis based on biochemical tests and 16S rRNA analysis and its mutant variant created by exposure to ultraviolet radiation at 254 nm were investigated for keratinolytic activity. The wild-type strain produced 35.4-50.4 U/mL keratinase over a period of 120 h, while the mutant one yielded 64.4-108.5 U/mL keratinase for the same period of 120 h....

The present study is an attempt to optimize simultaneous production of keratinolytic protease, amylase and biosurfactant from feather meal, potato peel and rape seed cake in a single media by response surface methodology to evaluate their biochemical properties for detergent additive. The optimization was carried out using 20 run, 3 factor and 5-level of central composite design on design exper...

Abstract Incubation parameters used for the creation of a protein lysate from enzymatically degraded waste feathers using crude keratinase produced by Laceyella sacchari strain YNDH were optimized Response Surface Methodology (RSM); amino acids quantification was also estimated. The optimization elevated total to 2089.5 µg/ml through application following optimal conditions: time 20.2 h, feathe...