Figure 5From: Feather keratin hydrolysates obtained from microbial keratinases: effect on hair fiberHPTLC analysis of keratin peptides after filtration by ultrafiltration in the Amicon system (Millipore, 1000 Daltons). 1 - Amino acid glycine. 2 - Feather keratin peptides obtained by enzymatic hydrolysis. 3 - Commercial hydrolysate (KH1).Back to article page