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Table 3 Variations in trace metal concentration in mg/Kg dried weight of cereal and root and tuber flour

From: Trace metal and aflatoxin concentrations in some processed cereal and root and tuber flour

Sample

As

Cu

Fe

Hg

Pb

Zn

Sweet potato flour

<0.01a

0.69 ± 0.01a

10.97 ± 0.01a

<0.01a

<0.01a

6.79 ± 0.01a

Cocoyam flour

<0.01a

6.63 ± 0.02b

27.64 ± 0.16b

<0.01a

<0.01a

15.54 ± 0.52b

Water yam flour

<0.01a

3.67 ± 0.02c

15.11 ± 0.06c

<0.01a

0.02 ± 0.01a

9.19 ± 0.04c

Sorghum flour

<0.01a

2.77 ± 0.33d

116.75 ± 0.07d

<0.01a

<0.01a

25.36 ± 0.06d

Rice flour

<0.01a

1.09 ± 0.05e

11.87 ± 0.06e

<0.01a

<0.01a

7.84 ± 0.01e

Maize flour

<0.01a

0.03 ± 0.01f

20.44 ± 0.02f

<0.01a

<0.01a

6.04 ± 0.03f

Millet flour

<0.01a

3.07 ± 0.01d

201.40 ± 0.14g

<0.01a

0.05 ± 0.01b

34.36 ± 0.06g

  1. Results are presented as means ± standard deviation. Superscript to figures in the same column implies significant or insignificant differences at p < 0.05 (ANOVA, Duncan test)