Fig 1.
The biomass yield, selenium content and selenium accumulation rate of MSPS at different Na2SeO3 concentrations.
Table 1.
Experimental and predicted values of MSPS based on central composite.
Table 2.
ANOVA for the evaluation of the quadratic model.
Fig 2.
Diagnostic plots for the Box-Behnken model adequacy.
(A) Normal plot of residuals, (B) plot of internally studentized residuals vs. predicted response, (C) plot of internally studentized residuals vs. actual and (D) desirability ramp plot for optimization.
Fig 3.
HPLC chromatograms of polysaccharides.
(A) Standard, (B) MSPS, and (C) MPS.
Fig 4.
Antioxidant capacities of the polysaccharides in vitro.
(A) DPPH radical-scavenging activity, (B) hydroxyl radical-scavenging activity and (C) reducing power.
Fig 5.
Hepatic parameters of (A) MDA content, (C) GSH-Px activity, (D) CHOL level and (E) T-AOC activity and serum parameters of (B) SOD activity a p < 0.01 compared with the normal control group.