Figure 1.

Antioxidant capacity of the different polysaccharides fractionated from SFPS. Antioxidant activity of the polysaccharides was assayed in three different cell-free systems. (a) DPPH-scavenging activity, (b) ABTS-scavenging activity, and (c) radical-scavenging activities and Fe²⁺ reducing. Data are shown as mean ± SD from three determinations. “^∗,” “^∗∗,” and “^∗∗∗∗” indicate a significant difference at the P < 0.05, P < 0.01, and P < 0.0001 levels, respectively. (d) Fruit flies were randomly collected (100 flies/group) and reared on basal medium without (control group) or with 1.6 g/L of SP1, SP2, or SP3 for 10 days. Subsequently, the in vivo oxidative resistant capacity was evaluated by determining the survival rate of the flies following exposure to oxidative stress induced by 5 mmol/L paraquat, given as a diet.