Fig. 2From: Chitooligosaccharides from squid pen prepared using different enzymes: characteristics and the effect on quality of surimi gel during refrigerated storageFRAP (a) and ABTS radical scavenging activity (b) of chitooligosaccharides (COSs) from squid pen prepared using pepsin or amylase or lipase for diffeent hydrolysis times. Bars represent the standard deviation (n = 3). Enzymes at 8% (w/w) were used. Different lowercase letters on the bars indicate significant difference (p < 0.05)Back to article page