Table 3.
Correlation matrix of total phenolic content, total flavonoid content and antioxidant activity measured by all the four in vitro assays.
| TPC | TFC | DPPH | H2O2 | ABTS | FRAP | |
|---|---|---|---|---|---|---|
| TPC | 1 | |||||
| TFC | −0.067 | 1 | ||||
| DPPH | 0.939 | −0.355 | 1 | |||
| H2O2 | 0.884 | −0.401 | 0.988* | 1 | ||
| ABTS | 0.988* | −0.200 | 0.981* | 0.945 | 1 | |
| FRAP | 0.996* | −0.137 | 0.965* | 0.921 | 0.997* | 1 |
Level of significance: *p < 0.05.
HE: Hexane; CH: Chloroform; EA: Ethyl acetate; ME: Methanol and IC: Isolated colony; NI: No inhibition. Inhibitory zones in mm, including diameter of the well (8 mm) showing the best value among the three repeats.