title: Concentrations of Mn, Fe, Cu, Zn, Cr, Cd, Pb, Ni in selected Nigerian tubers, legumes and cereals and estimates of the adult daily intakes.
abstract: This study was designed to determine the levels of microminerals (manganese (Mn), iron (Fe), copper (Cu), zinc (Zn), chromium (Cr)) and heavy metals (cadmium (Cd), lead (Pb) and nickel (Ni)) in some tubers, legumes and cereals obtained from the markets in Abeokuta city, South-West Nigeria. The food samples were digested by dry ashing procedure and their minerals were determined by atomic absorption spectrophotometer. The results show mean values of 1.67-32.00, 7.25-61.58, 1.59-10.56, 6.65-46.99, 0.02-0.58, <0.01-0.09, <0.08, and 0.06-0.14 mg/kg for Mn, Fe, Cu, Zn, Cr, Cd, Pb and Ni respectively. The levels of these metals in all the samples analysed were within the ranges reported for similar tubers, legumes and cereals from various parts of the world. The daily intakes of the metals through tubers, legumes and cereals were found to be lower than the provisional tolerable daily intakes proposed by Joint FAO/WHO Expert Committee on Food Additives.
authors.affiliation: University of Ibadan, Faculty of Public Health, Department of Human Nutrition, Ibadan, Nigeria. Electronic address: olu_akins@yahoo.com.
authors.forename: I O
authors.initials: IO
authors.lastname: Akinyele
authors.affiliation: Babcock University, Benjamin Carson (Snr.) School of Medicine, Department of Biochemistry, Ogun State, Nigeria. Electronic address: osshokunbi@gmail.com.
authors.forename: O S
authors.initials: OS
authors.lastname: Shokunbi
mesh_terms: D000328:Adult; D000368:Aged; D002104:Cadmium / Q000032:analysis; D002857:Chromium / Q000032:analysis; D003300:Copper / Q000032:analysis; D002523:Edible Grain / Q000737:chemistry*; D007887:Fabaceae / Q000737:chemistry*; D005260:Female; D006801:Humans; D007501:Iron / Q000032:analysis; D008297:Male; D008345:Manganese / Q000032:analysis; D019216:Metals, Heavy / Q000032:analysis*; D008875:Middle Aged; D009532:Nickel / Q000032:analysis; D009549:Nigeria; D035281:Plant Tubers / Q000737:chemistry*; D013054:Spectrophotometry, Atomic; D014131:Trace Elements / Q000032:analysis*; D055815:Young Adult; D015032:Zinc / Q000032:analysis
chemical_list: D019216:Metals, Heavy; D014131:Trace Elements; D002104:Cadmium; D002857:Chromium; D008345:Manganese; D003300:Copper; D009532:Nickel; D007501:Iron; D015032:Zinc
keywords: Cadmium; Cereals; Chromium; Copper; Daily intake; Iron; Lead; Legumes; Manganese; Nickel; Nigeria; Tubers; Zinc