Table 1.
Total phenolic content (TPC), total tannin content (TTC), total flavonoid content (TFC), free radical scavenging (FRS), and ferric reducing power (FRP) of the various Commelinaceae leaf extracts.
| Species | TPC (mg GAE/100 g) * | TTC (mg TAE/100 g) * | TFC (mg RE/100 g) | FRS (mg AA/100 g) | FRP (mg GAE/g) |
|---|---|---|---|---|---|
| R. spathacea variegata | 203.9 ± 16.3 a,d (24.8 ± 2.2) a | 20.6 ± 2.3 a | 10.8 ± 2.9 a | 177.3 ± 15.3 a | 1.4 ± 0.1 a |
| R. bermudensis | 296.6 ± 21.7 b (33.5 ± 2.4) b | 11.5 ± 1.7 b | 18.4 ± 2.4 b | 462.2 ± 97.3 b | 2.7 ± 0.3 b |
| T. zebrina | 620.9 ± 39.7 c (70.1 ± 4.5) c | 57.6 ± 3.5 c | 17.1 ± 2.8 b | 906.5 ± 88.2 c | 4.8 ± 0.3 c |
| T. pallida | 153.1 ± 21.8 d (17.8 ± 2.3) d | 13.6 ± 2.1 b | 10.6 ± 4.0 a | 103.0 ± 36.9 a | 0.9 ± 0.1 a |
| C. fragrans | 269.3 ± 33.8 a,b (29.3 ± 2.9) a,b | 19.7 ± 1.5 a | 2.5 ± 1.4 a | 262.5 ± 67.2 a | 1.5 ± 0.3 a |
Results are expressed as mean ± S.D. (n = 3); For each column, values followed by the same letter are not significantly different at p < 0.05 as measured by the Tukey HSD test; All gram measurements are expressed in terms of fresh weight; * Values in parentheses are in terms of mg TAE/100 g.