Table 1 Flavanol, flavonol and anthocyanin content of dehulled and whole Bambara groundnut.

From: Phytochemical composition and antioxidant properties of methanolic extracts of whole and dehulled Bambara groundnut (Vigna subterranea) seeds

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

  1. Values represent the mean ± standard deviation of triplicate readings (n = 3).
  2. Values with different superscript in same column are significantly different (p < 0.05).