Table 1 Flavanol, flavonol and anthocyanin content of dehulled and whole Bambara groundnut.
Sample | Whole | Dehulled | % reduction |
|---|---|---|---|
Flavanol (mg CE/g) | |||
Black | 2.00 ± 0.09a | 0.28 ± 0.01a | 86.0 |
Red | 1.41 ± 0.01b | 0.24 ± 0.01ab | 83.0 |
Brown | 1.41 ± 0.20b | 0.22 ± 0.03b | 84.4 |
Black–eye | 0.36 ± 0.02c | 0.19 ± 0.00c | 47.2 |
Brown–eye | 0.33 ± 0.01c | 0.12 ± 0.02d | 63.6 |
Mixture | 1.04 ± 0.03d | 0.24 ± 0.05ab | 76.9 |
Flavonol (mg QE/g) | |||
Black | 7.74 ± 1.20a | 4.94 ± 0.12a | 36.2 |
Red | 10.24 ± 1.15b | 5.13 ± 0.17a | 49.9 |
Brown | 6.33 ± 0.16c | 4.76 ± 0.77a | 24.8 |
Black-eye | 5.73 ± 0.94c | 4.99 ± 0.26a | 12.9 |
Brown-eye | 5.68 ± 0.40c | 4.33 ± 0.50b | 23.8 |
Mixture | 7.92 ± 0.07a | 4.62 ± 0.14a | 41.7 |
Anthocyanin content (mg/g) | |||
Black | 0.145 ± 0.003a | 0.028 ± 0.005a | 79.3 |
Red | 0.033 ± 0.003b | 0.030 ± 0.003a | 9.1 |
Brown | 0.032 ± 0.002b | 0.030 ± 0.004a | 6.3 |
Black-eye | 0.032 ± 0.006b | 0.029 ± 0.003a | 9.4 |
Brown-eye | 0.033 ± 0.005b | 0.023 ± 0.004b | 30.3 |
Mixture | 0.038 ± 0.005b | 0.026 ± 0.002b | 31.6 |