Fig. 5From: Physicochemical properties of polysaccharides from Dendrobium officinale by fractional precipitation and their preliminary antioxidant and anti-HepG2 cells activities in vitroScavenging activities on the reducing power assay (a), superoxide anion radical (b), DPPH radical (c), and hydroxyl radical (d) for DOP-40, DOP-50, DOP-60, and DOP-70Back to article page