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Table 3 Average concentration (mean ± SD, n = 3, μg/g dry weight basis) of major, trace and toxic metals in ginger samples from Tepi, Bombae, Hadaro and Illubabur

From: Levels of essential and non-essential metals in ginger (Zingiber officinale) cultivated in Ethiopia

Metal

Average concentration (mean ± SD, n = 3, μg/g dry weight basis)

Tepi ginger

Bombae ginger

Hadaro ginger

Illubabur ginger

Ca

2000 ± 47

2540 ± 93

2190 ± 24

2490 ± 41

Mg

2990 ± 9

2700 ± 57

2760 ± 11

4090 ± 105

Cu

4.78 ± 0.34

1.86 ± 0.18

2.53 ± 0.19

1.10 ± 0.05

Zn

55.2 ± 3.9

39.6 ± 0.5

38.5 ± 0.5

54.0 ± 2.7

Mn

385 ± 9

285 ± 4.3

184 ± 3.6

401 ± 12

Ni

5.61 ± 0.44

5.46 ± 0.48

6.78 ± 0.53

8.40 ± 0.32

Fe

44.2 ± 3.3

55.4 ± 5.0

41.8 ± 2.8

89.0 ± 6.1

Co

7.58 ± 0.46

5.68 ± 0.40

2.04 ± 0.14

2.18 ± 0.18

Cr

9.28 ± 0.61

6.02 ± 0.14

9.17 ± 0.62

10.8 ± 0.2

Cd

0.97 ± 0.08

0.38 ± 0.02

0.38 ± 0.02

0.70 ± 0.07

Pb

ND

ND

ND

ND

  1. ND: Concentration of the tested heavy metal was below the method detection limit.