Compound DPPH ( % ) reducing power 1 65.21 ± 0.80 0.136 ± 0.01 2 17.40 ± 0.13 0.071 ± 0.00 Vitamin C 100.00 ± 0.00 - BHA - 0.306 ± 0.05 Vitamin C was used as a positive control on DPPH assay at 100 μmole/L; BHA was used as a positive control on reducing power at 100 μmole/L.

Table 2: DPPH radical scavenging activity (%) and reducing power of two extracts kaempferol-3-O-(2",4"-di-E-p-coumaroyl)-α-L-rhamnopyranosid (1) and kaempferol- 3-O-(3",4"-di-E-p-coumaroyl)-α-L-rhamnopyranoside (2) of C. reticulatum.