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Evaluation of the Concentration of Some Toxic Metals in Dietary Red Palm Oil | OMICS International | Abstract
ISSN: 1948-593X

Journal of Bioanalysis & Biomedicine
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Research Article

Evaluation of the Concentration of Some Toxic Metals in Dietary Red Palm Oil

Adepoju-Bello AA1, Osagiede SA2 and Oguntibeju OO3*

1Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Lagos, Nigeria

2Department of Pharmaceutical and Medicinal Chemistry, Faculty of Pharmacy, Olabisi Onabanjo University, Shagamu Campus, Ogun State, Nigeria

3Department of Biomedical Sciences, Faculty of Health and Wellness Sciences, Cape Peninsula University of Technology, Bellville Campus, 7535, South Africa

*Corresponding Author:
Oguntibeju OO
Department of Biomedical Sciences
Faculty of Health and Wellness Sciences
Cape Peninsula University of Technology
South Africa
Tel: 272-195-384-95
E-mail: [email protected],[email protected]

Received Date: September 25, 2012; Accepted Date: October 22, 2012; Published Date: October 26, 2012

Citation: Adepoju-Bello AA, Osagiede SA, Oguntibeju OO (2012) Evaluation of the Concentration of Some Toxic Metals in Dietary Red Palm Oil. J Bioanal Biomed 4:092-095. doi:10.4172/1948-593X.1000069

Copyright: © 2012 Adepoju-Bello AA, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


Palm oil has been part of human diet for more than 5000 years. For generations, it has been revered as both a nutritious food and a valuable medicine. However, care should be taken to evaluate the purity and safety of this nutritional and medicinal agent to the human system. This study investigated the concentration of cadmium, chromium, mercury, lead, arsenic and nickel in twenty-five samples of ready-to consume palm oil that were bought randomly from different markets in Lagos, Nigeria. The samples were digested with aqua-regia (2:1:2 HNO3:HClO4:H2SO4 respectively) and the digested samples were analyzed using Atomic Absorption Spectroscopy. There was no detectable mercury in one of the twenty-five samples analysed. However, all the samples contained a detectable amount of each of the other five metals analysed. The Oral Component Limit (OCL) for cadmium, chromium, mercury, lead, arsenic and nickel as stated by USP are 0.5μg/g, 25 μg/g, 1.5 μg/g, 1 μg/g, 1.5 μg/g and 25 μg/g respectively. The samples contained detectable amounts of the metals although with values below the USP standard OCL. The results obtained from this study suggest that the palm oil samples analysed are save for consumption in terms of the metals of interest analysed.


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