Table 2.
DPPH radical scavenging activities of vitamin C, HMI, HPI, and HBI. Each value is the mean ± SD.
| DPPH radical scavenging activity (%) | |||||
|---|---|---|---|---|---|
| Cona (mg/mL) | 0.1 | 0.2 | 0.3 | 0.4 | 0.5 |
| HBI | 79.51 ± 0.61c | 80.55 ± 1.50c | 83.01 ± 1.03c | 86.00 ± 0.71c | 86.15 ± 0.92c |
| HPI | 85.91 ± 0.88b | 87.76 ± 0.43b | 90.01 ± 0.26b | 90.89 ± 0.17b | 91.99 ± 0.14b |
| HMI | 54.93 ± 0.61d | 61.80 ± 0.43d | 66.32 ± 0.16d | 69.45 ± 0.30d | 75.71 ± 0.98d |
| Vitamin C | 96.38 ± 0.47a | 96.47 ± 0.34a | 96.50 ± 0.46a | 96.83 ± 0.85a | 97.00 ± 0.41a |
Cona: concentration; different letters (a, b, c, and d) show statistical significance (P < 0.05).