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Research Article Open access CC BY 4.0

Iodine Fortification Study of Some Common Nigerian Vegetables Using Copper Complex

Chigozie John Onyinye Anarado, Charity Ebere Anarado, Ngozi Anastasia Okonkwo, Obianuju Adaobi Ikeh, Ogechi Umendu, Nonso Ernest Adike, Victor Idika Uduma

International Research Journal of Pure and Applied Chemistry · pp. 36–42 · Published 23 Apr 2024

10.9734/irjpac/2024/v25i3854

Abstract

Iodine deficiency (ID) is the result of insufficient dietary iodine intake in humans, the deficiency not only leads to goiter formation but also to severe retardation of growth, development and maturation of nearly all the tissues of the body, especially those that are fast developing. The aim of this research is to evaluate levels of iodine intake by ten Nigerian vegetables using copper complex. Dry alkaline ash method was used in the determination. The results obtained showed that all the ten vegetables used absorbed high concentrations of iodine when inoculated with 0.09 M and 0.14 M [Cu(I)4]2- . Iodine phytotoxicity was observed in all the plants when inoculated with 0.2-0.8 M of the copper complex as all the plants died. Increase in the concentration of copper complex from 0.09-0.14 M increased the absorption of iodine by Amaranthus hybridus, Corchorous olitoruis, Gongronema lotifolium and Solanum melongena. The reverse was observed with Murraya koenigii, Ocimum gratissimum, Talinium triangulare, Abelmoschus esculentus, Cucurbita pepo and Telfairia occidentalis.  Ocimum gratissimum absorbed the iodine at 0.09M with value of 164.79 mg/kg, the vegetable also absorbed least at 0.14 M with a dose of 61.80 mg/kg. The intake of the iodine by the plants showed that the method can be used in the fortifying these Nigerian vegetables with iodine, thereby reducing the incidence of Iodine deficiency disorder in humans.

Iodine biofortification vegetables copper complex absorption

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