Fig. 5
a Reducing power of the feather protein hydrolysate produced by Bacillus cytotoxicus Oll-15 (black) and ascorbic acid (white). b ABTS scavenging activity (%) of the feather protein hydrolysates produced by Bacillus cytotoxicus LT-1 (white) and Bacillus cytotoxicus Oll-15 (black)