Table 4.
DPPH-free radical scavenging activity and β-carotene bleaching activity of M. latifolia fractions and isolated compounds.
| DPPH |
β-Carotene bleaching activity |
|
|---|---|---|
| IC50 (μg/mL) | AA (%) | |
| Fractions | ||
| CF1 | 207.91 ± 0.02e | 62.87 ± 0.04d |
| CF2 | 601.87 ± 0.04g | 59.89 ± 0.03e |
| CF3 | 399.03 ± 0.05f | 58.90 ± 0.06e |
| CF4 | 182.88 ± 0.03d | 46.43 ± 0.02f |
| Compounds | ||
| 1 | ND | 49.46 ± 0.03f |
| 2 | 1776.01 ± 0.16 (6429.23 ± 0.16 μM)h | 88.48 ± 0.02b |
| 3 | ND | 1.08 ± 0.02g |
| 4 | – | – |
| Ascorbic acid | 15.00 ± 0.01 (85.17 ± 0.01 μM)b | 35.23 ± 0.02g |
| α-Tocopherol | 18.79 ± 0.01 (43.63 ± 0.01 μM)c | 98.01 ± 0.02a |
| BHT | 9.90 ± 0.03 (44.93 ± 0.03 μM)a | 76.42 ± 0.02c |
ND: Not determined where IC50 was not detected at highest tested concentration (1 mg/mL). ‘-’: Not available. All values were expressed as mean ± standard deviation of triplicates. Data with different superscript (a, b, c, d, e, f, g, h) in the same column were considered significant (p < 0.05).