Table 6

Iron and zinc content (mg/kg wet weight) in starchy roots collected in respective counties

Sample

Scientific

name

Iron

(mg/kg)

Zinc

(mg/kg)

Kumi

Ngora

Bukedea

Kumi

Ngora

Bukedea

Cassava dry

Manihot esculenta Crantz

n.s.

n.s.

50

n.s.

n.s.

7

Irish potato

Solanum tuberosum L

140

400^{a, c}

500^c

3.3

3.5

3.5^b

Sweet potato, Betty

Ipomoea batatas (L.) Lam

*

42

56

3

1.6

1.7

Sweet potato Kampala

Ipomoea batatas (L.) Lam

n.s.

43

n.s.

n.s.

2.3^a

n.s.

For potatoes the values are for non-peeled samples. Results are given as a mean of two parallel dissolutions.

^a Mean value of four parallel dissolutions.

^b Values with Relative Standard Deviation (RSD) between 10-20%

^c Values with Relative Standard Deviation (RSD) between 20-30%

*The sample was rejected because of unacceptable variation.

n.s. = No sample collected.

Tidemann-Andersen et al. Nutrition Journal 2011 10:81   doi:10.1186/1475-2891-10-81