Bioaccumulation Potential of Heavy Metals in Edible Fungal Sporocarps from the Niger Delta Region of Nigeria
DOI:
https://doi.org/10.3923/pjn.2008.93.97Keywords:
Bioaccumulating potential, fungal sporocarps, heavy metals, Niger deltaAbstract
Contents of Ni, Cu, Pb, Mn, Cd and Zn in edible fungal sporocarps and soil from the Niger delta wetlands were determined. Results revealed a species-dependent bioaccumulating potential. Armillariella mellea had the highest content of Zn and Pb, while Pleurotus sapidus had the lowest bioaccumulating potential for Ni, Pb and Cu. Generally, the heavy metal accumulating potential decreased in the trend:Zn>Mn.Cu>Ni>Pb>Cd and were inferior to the FAO/WHO (1976) dietary standards. There was significant correlation (p<0.05) between soil Cd/Cd content in Agaricus biosporus and soil Zn/Pb content in Agaricus biosporus. However, the presence of detectable amounts of Pb and Cd may be a pointer to health risk associated with excessive consumption, particularly during harvest periods, and should be avoided.
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