Table 5 ORAC value and IC ₅₀ value of compounds

Chlorogenic acid

3.50±0.36

27.50±0.77

Danshensu sodium

5.30±0.31

23.00±0.26

Caffeic acid

5.31±0.18

23.60±0.47

Protocatechuic aldehyde

6.03±0.90

13.30±0.26

Hyperoside

6.20±1.08

22.00±0.19

Rosmarinic acid

7.02±1.03

13.50±0.10

Protocatechuic acid

7.84±1.26

17.50±0.25

Isoquercitrin

7.86±0.67

18.83±0.05

Rutin

9.62±1.40

18.30±0.49

Salvianolic A

10.26±0.82

12.10±0.15

(−)-Epicatechin

11.10±0.41

20.40±0.15

Lithospermic acid

11.40±0.71

15.61±1.07

Quercetin

12.90±0.35

13.10±0.26

Salvianolic B

16.73±2.53

8.80±0.06

Procyanidin B₂

20.29±1.80

11.20±0.30