Structural Characteristics and Antioxidative Capability of the Soluble Polysaccharides Present in Dictyophora indusiata (Vent. Ex Pers.) Fish Phallaceae

Table 4

The IC₅₀ values of different soluble polysaccharide fractions obtained from the fruiting bodies of D. indusiata for scavenging the DPPH-, hydroxyl- and superoxide anion radicals^a.

Polysaccharide fraction^a	IC50, DPPH (mg mL^−1)	IC50, •OH (mg mL^−1)	IC50, superoxide (mg mL^−1)
D1	ud	ud	1.76
D2	3.93	4.39	ud
D3	0.11	1.02	0.64
D4	2.06	8.99	1.63
D6	0.75	5.63	4.79

ud: undetected.
^aWeight-based percentage of polysaccharides extracted from 100 g of lyophilized fruiting body powder of D. indusiata. D1: the 3-fold ethanol precipitate from hot water extracts. D2: the 3-fold ethanol precipitate from 0.04 N HCl extracts. D3: the isoelectric precipitate from 2% NaOH extracts. D4: the 3-fold ethanol precipitate from 2% NaOH extracts. D5: the isoelectric precipitate from 10% KOH extracts; and D6: the 3-fold ethanol precipitate from 10% KOH extracts. Carbohydrate content (% w/w) was measured by the phenol-H₂SO₄ method. Protein content (% w/w) was determined by Bradford protein assay.