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Ecological risk assessment of toxic elements, microbial loads, parasites and antinutritional factors in Telfairia occidentalis grown on sewage contaminated soil

The aim of this study was to evaluate the ecological health risk assessment of toxic elements, microbial load, and anti-nutrient constituent build-up in vegetables, Talfairia occidentalis, grown on sewage contaminated soil. Samples of soil and vegetables were taken from farms near the dumpsites (sit...

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Bibliographic Details
Published in:Acta ecologica Sinica 2022-10, Vol.42 (5), p.511-519
Main Authors: Egwu, Oguh Collins, Wahab, Okunowo O., Dickson, Musa A., Ucheoma, Elele U., Akudo, Osuji C., Amanabo, Musa, Samuel, Ubani Chibuike
Format: Article
Language:English
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Summary:The aim of this study was to evaluate the ecological health risk assessment of toxic elements, microbial load, and anti-nutrient constituent build-up in vegetables, Talfairia occidentalis, grown on sewage contaminated soil. Samples of soil and vegetables were taken from farms near the dumpsites (sites A). As a control, samples were taken from an area with no dump sites (sites B). Atomic Absorption Spectrophotometry was used to determine the potentially toxic elements. The basic titrimetric method was used to estimate Phytate and Oxalate in the vegetables in order to assess anti-nutrient constituents. The content of cyanogenic glycosides, tannins, and alkaloids in vegetable samples was determine using a standard method. Total heterotrophic bacteria, E. coli, total coliform, faecal coliform, Staphylococcus aureus, Salmonella, and intestinal parasites were all determined using APHA standard methods. For all samples analyzed, the concentrations of metals – Cr, Zn, Pb, Cu, and Ni in site A were higher than those in site B. The soil and vegetable samples differed from the controls by a significant amount (P 
ISSN:1872-2032
1872-2032
DOI:10.1016/j.chnaes.2021.11.007