Table 5 Mineral composition of wild and cultivated Yam species.

From: Nutritional and health benefits of wild and cultivated yam (Dioscorea spp.) species consumed in eastern Democratic Republic of Congo

Species

Zinc

(mg/100 g)

Potassium

(mg/100 g)

Magnesium

(mg/100 g)

Iron

(mg/100 g)

Calcium

(mg/100 g)

β-carotene (mg/100 g)

D. bulbifera (U)

2.2 ± 0.2

107.4 ± 8.8d

91.4 ± 5.1c

4.7 ± 0.2a

40.1 ± 2.2a

1.9 ± 0.0a

D. alata (W)

2.2 ± 0.2

107.5 ± 3.4d

71.0 ± 2.4d

3.9 ± 0.3b

31.8 ± 3.0b

0.5 ± 0.0e

D. alata (P)

2.1 ± 0.2

132.3 ± 10.8 cd

107.3 ± 5.4b

5.1 ± 0.3a

11.2 ± 0.9e

1.8 ± 0.0b

D. bulbifera (A)

2.2 ± 0.3

183.6 ± 26.2b

117.6 ± 8.8ab

5.2 ± 0.3a

15.6 ± 0.6d

1.0 ± 0.0d

D. dumetorum

1.8 ± 0.1

240.2 ± 18.3a

121.8 ± 12.7ab

5.0 ± 0.5a

23.5 ± 1.3c

1.0 ± 0.0c

D. praehensilis

1.9 ± 0.0

143.2 ± 11.9c

125.9 ± 10.2a

5.2 ± 0.4a

23.8 ± 0.6c

0.5 ± 0.0f

P-value

0.07ns

< 0.001***

< 0.001***

0.004**

< 0.001***

< 0.001***

  1. Results are presented as mean ± standard deviation (n = 3). Values with different letters in the same column are significantly different at p-value threshold of 0.05 of the LSD test. ns: not significant (p > 0.05), **, ***: highly significant and very highly significant at p < 0.01 and p < 0.001, respectively. U = underground tuber, W = white tuber flesh color, P = purple tuber flesh color, A = aerial tuber.
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