Table 2.

Antioxidant activities of Sanchi flower polysaccharide and its phosphorylated derivative (Unit: %)

Antioxidant activity	Concentration (mg/mL)	Polysaccharide	Derivative	Ascorbic acid
DPPH RSA	0.2	4.35 ± 0.12eC	9.92 ± 0.53eB	90.86 ± 0.30bA
	0.4	15.06 ± 0.12dC	16.51 ± 0.77dB	97.10 ± 0.07aA
	0.6	27.88 ± 0.12cC	26.24 ± 0.01cB	97.65 ± 0.01aA
	0.8	33.76 ± 0.07bC	35.57 ± 0.18bB	97.77 ± 0.01aA
	1.0	34.71 ± 0.07aC	39.22 ± 0.77aB	97.69 ± 0.07aA
ABTS RSA	0.2	11.73 ± 0.25eC	12.54 ± 0.06eB	98.12 ± 0.30aA
	0.4	14.66 ± 0.15dC	20.43 ± 0.20dB	98.05 ± 0.17aA
	0.6	22.15 ± 0.08cC	24.92 ± 0.05cB	98.01 ± 0.09aA
	0.8	23.78 ± 0.07bC	28.02 ± 0.8bB	97.97 ± 0.11aA
	1.0	25.73 ± 0.09aC	32.04 ± 0.13aB	98.16 ± 0.07aA
Hydroxyl RSA	0.2	67.78 ± 0.20eC	69.53 ± 0.08eB	85.64 ± 0.25eA
	0.4	68.91 ± 0.10dC	71.37 ± 0.15dB	88.36 ± 0.19dA
	0.6	70.45 ± 0.08cC	74.78 ± 0.11cB	89.48 ± 0.15cA
	0.8	72.20 ± 0.17bC	77.01 ± 0.09bB	92.64 ± 0.13bA
	1.0	75.35 ± 0.19aC	80.91 ± 0.15aB	99.56 ± 0.10aA

^A–CMeans followed by different letters in each row are significantly different (p < 0.05)

^a–eMeans followed by different letters in each column are significantly different (p < 0.05)