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Journal of Food Quality
Volume 2018, Article ID 2362843, 6 pages
Research Article

Proximate Composition and Heavy Metal Analysis of Three Aquatic Foods in Makoko River, Lagos, Nigeria

1Department of Biological Sciences, Covenant University, Ota, Ogun State, Nigeria
2Department of Pure and Applied Zoology, Federal University of Agriculture, Abeokuta, Ogun State, Nigeria

Correspondence should be addressed to Isaac Opeyemi Ayanda; gn.ude.ytisrevinutnanevoc@adnaya.imeyepo

Received 22 January 2018; Revised 8 April 2018; Accepted 17 April 2018; Published 14 May 2018

Academic Editor: Elena González-Fandos

Copyright © 2018 Isaac Opeyemi Ayanda et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Three aquatic products, tilapia fish, lobster and crab, were collected from the landing site of fishermen in Makoko, a fishing suburb in Lagos State, Nigeria. They were analyzed for their proximate composition, and concentration of heavy metals (Cr, Cd, and Pb) was also measured in them. The nutrient values varied among the three organisms. The lobsters and crabs had higher protein values while tilapia was richer in lipid and moisture content. In most cases, these differences were not significant. The concentration of heavy metals also differed in the three organisms. All organisms had high concentrations of the three heavy metals analyzed. The heavy metal load as observed in this study is consistent with some previously reported values in literature. Plausible reasons for these differences were discussed in light of size, trophic level, choice of food of the organisms, and anthropogenic activities. It may be advisable that heavy metal concentrations are regularly monitored in edible aquatic food products so that human health is not at risk.