Fig. 2From: Bacillus sp. CSK2 produced thermostable alkaline keratinase using agro-wastes: keratinolytic enzyme characterizationEffect of a carbon source supplementation (1.0 g/L) b maltose concentration (0.8–10.0 g/L) and c chicken feather concentration (1.0–17.5 g/L) on extracellular keratinase production by Bacillus sp. CSK2Back to article page