Effects of extraction methods on the yield, chemical structure and anti-tumor activity of polysaccharides from Cordyceps gunnii mycelia

•Five extraction methods were compared for extracting CPS from C. gunnii.•The yield and anti-tumor activity of CPSMAE were the best.•The purified polysaccharides (PPS) were obtained from CPS.•PPS had the same monosaccharide composition and IR spectra characteristic.•The relationship between characte...

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