Journal of Food, Agriculture and Environment

Microbes and dietary values of some major fish sources in Nigeria

Author(s):

Olajide Adedayo Ajayi ^{1, 3}*, Emmanuel I. Adeyeye ², Anthony I. Okoh ¹

Recieved Date: 2014-04-10, Accepted Date: 2014-09-19

Abstract:

This study shows some nutritional values and metal components of health concern in fish sources such as mackerel (Titus) Scomber scombrus, shawa Sardinella eba and kotwe Carangoides armatus meant for public consumption in Nigeria. The moisture content, ash content, crude fat, crude protein, crude fibre, vitamin A and vitamin C were determined. Titus Scomber scombrus showed highest value of vitamin A (96.7 i.u), while kotwe recorded relatively high value of vitamin C (0.60 mg/100 g) compared with other fish sources. Variations in the levels of some metal components can serve as measure of pollution, especially the amount of lead (P) (1.09%) and iron (Fe) (2.0%) in Titus Scomber scombrus could be an indication of pollution for this fish sources or possibly result of biomagnifications. The moisture and ash content of the sampled fish sources during the study ranged from 66.7% to 77.5% and 3.79% to 4.03%, respectively. Total bacterial count estimated for fish samples studied were 113 x 10⁴ cfu/mL for Titus, 40 x 10⁴ cfu/mL for Sardinella eba (shawa) while coliform count gave value of 9.5 x 10³ cfu/mL and  9.65 x 10⁴ cfu/mL for both fish sources, respectively. Generally, this study shows that mackerel (Titus) Scomber scombrus has more nutritional quality than other two fish sources analyzed, that is, shawa Sardinella eba and kotwe Carangoides armatus. Complementary to this, the level of microbial and chemical contaminants including heavy metals such as lead and chromium that could be inimical to human health from these sources were determined. Thus, the data obtained during the study, can serve as benchmark for environmental monitoring and aquaculture protection services in the country, Nigeria, and other parts of the world.

Keywords:

Aquaculture, assessment, environment, fishes, health benefits, microbiological quality, mineral composition, Nigeria, proximate analysis, protection, public

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Journal: Journal of Food, Agriculture and Environment
Year: 2014
Volume: 12
Issue: 3&4
Category: Environment
Pages: 303-306

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