💡这项突破是什么?
Abstract:tDynamic microwave-assisted extraction (DMAE) technique was employed for the extraction ofpolysaccharides from Lycium ruthenicum (LRP). The extracting parameters were optimized by usingthree-variable-three-level Box–Behnken design and response surface methodology (RSM) based on thesingle-factor experiments. RSM analysis indicated good correspondence between experimental and pre-dicted values. The optimum extraction parameters for the yield of polysaccharide were ratio of waterto raw material 31.5 mL/g, extracting time 25.8 min and microwave power 544.0 W. Polysaccharide wasanalyzed by chemical methods and Fourier-transform infrared (FT-IR). The antioxidant activities of LRPwere investigated including scavenging activity of 2,2-diphenyl-1-picrylhydrazyl (DPPH), hydrogen per-oxide and free radicals of superoxide anion in vitro. The results of antioxidant activity exhibited LRP hadthe potential to be explored as novel natural antioxidant for using in functional foods or medicine.
