Red and blue flowers

Some of the red and blue varieties of 12 flowers popularly grown in our gardens were extracted with 1% acidic methanol and these extracts were then screened for Antioxidant activity by DPPH assay. They can be good source of natural antioxidants.

1. Mirabilis jalapa - 94±0.78%
2. Impatiens balsamina 49±0.29% -
3. Jatropha integerrima 79±0.15% -
4. Portulaca graniflora 76±0.99%
5. Canna indica - 74±0.67%
6. Quisqalis indica 65±0.22% -
7. Rosa indica - 62±0.24%
8. Nerium oleander 50±0.29%
9. Ixora chinensis - 49±0.21%
10. Thunbergia erecta 33±0.21% -
11. Ruellia tuberosa 28±0.82% -
12. Clitoria ternatea - 86±0.44%