Fig. 3From: Keratinolytic protease from Pseudomonas aeruginosa for leather skin processingEffects of different media compositions on production of keratinase by the P. aeruginosa YK17 isolate. a Chicken feather (%). b Organic nitrogen sources. c Inorganic nitrogen sources. d Carbon sources. Bar with different superscripts indicates significantly different at α level of 0.05Back to article page