Skip to main content

Table 2 Mineral composition of uncooked and cooked indigenous vegetables (mg/100 g)

From: Impact of cooking methods on the chemical and antioxidant composition of some indigenous vegetables used in different food dishes in Southeast Nigeria

Sample

Ca

Zn

P

Fe

K

Mg

Uziza leaf (Piper guineense)

Uncooked

45.56e ± 0.02

1.78e ± 0.01

1.61f ± 0.02

15.12c ± 0.03

7.41e ± 0.04

12.82e ± 0.02

Blanched

40.19e ± 0.02

1.42d ± 0.03

0.91f ± 0.02

10.64c ± 0.01

4.24f ± 0.04

9.52e ± 0.02

Sautéed

42.31d ± 0.02

1.57e ± 0.02

1.14f ± 0.02

12.22c ± 0.04

5.63f ± 0.04

11.11e ± 0.01

Nchuanwu (Scent) leaf (Ocimum gratissimum)

Uncooked

60.45c ± 0.01

19.89a ± 0.01

20.36d ± 0.02

17.67a ± 0.02

70.23d ± 0.04

71.08b ± 0.03

Blanched

41.83d ± 0.04

16.57a ± 0.02

15.41d ± 0.01

13.93b ± 0.03

52.13d ± 0.03

62.47b ± 0.02

Sautéed

45.37e ± 0.04

18.04a ± 0.02

26.75d ± 0.03

19.62a ± 0.01

76.13d ± 0.03

62.47b ± 0.01

Anara (garden egg) leaf (Solanum melongena)

Uncooked

206.63a ± 0.01

8.09b ± 0.01

7.25e ± 0.01

15.73b ± 0.03

715.52a ± 0.02

6.52f ± 0.01

Blanched

196.91a ± 0.01

6.72b ± 0.03

2.92e ± 0.03

14.03a ± 0.01

550.71a ± 0.01

6.52f ± 0.01

Sautéed

200.32a ± 0.01

8.19b ± 0.01

5.57e ± 0.03

16.02b ± 0.01

601.84a ± 0.01

7.82f ± 0.03

Utazi leaf (Gongronema latifolium)

Uncooked

156.36b ± 0.02

2.45c ± 0.02

49.82c ± 0.02

7.66d ± 0.04

355.34b ± 6.39

298.72e ± 0.01

Blanched

143.71b ± 0.02

1.06f ± 0.03

41.27b ± 0.01

4.87d ± 0.01

300.54b ± 0.01

279.46a ± 0.02

Sautéed

144.97b ± 0.01

2.10c ± 0.01

45.92b ± 0.02

6.31d ± 0.01

301.85b ± 0.01

279.98a ± 0.01

Okazi leaf (Gnetum africanum)

Uncooked

60.22d ± 0.01

1.38f ± 0.01

81.57a ± 0.02

2.47f ± 0.03

150.43c ± 0.02

64.07c ± 0.03

Blanched

49.74c ± 0.03

1.21e ± 0.01

72.42a ± 0.02

2.31e ± 0.01

130.27c ± 0.03

40.37c ± 0.01

Sautéed

55.61c ± 0.01

1.28f ± 0.01

75.34a ± 0.01

2.37e ± 0.02

137.57c ± 0.01

60.52c ± 0.03

Onugbu (bitter) leaf (Vernonia amygdalina)

Uncooked

12.98f ± 0.02

2.14d ± 0.01

53.44b ± 0.01

3.53e ± 0.02

9.36e ± 0.01

17.48d ± 0.01

Blanched

10.38f ± 0.02

1.89c ± 0.01

39.65c ± 0.04

2.07f ± 0.03

8.24e ± 0.02

13.45e ± 0.01

Sautéed

12.22f ± 0.01

2.04d ± 0.04

45.10c ± 0.01

1.76f ± 0.02

8.42e ± 0.05

14.26d ± 0.04

  1. Mean ± standard deviation for duplicate determination. Values with different superscripts in the same column are significantly different (p < 0.05)