Authors
Ezeibe Chidi Nwaru, Nkechi P Oyeabor-Chinedum, Chinaza Maureen Ngozi, Chikodi Lilian Okechukwu, Prince Onyedinma Ukaogo, Nnamdi Ogwo, Chiemeriem Matthew Ahaiwe, Eziuche Amadike Ugbogu, Onyekachi Fa Ibiam
Published in
International journal of medicinal mushrooms. Volume 27. Issue 7. Pages 85-95.
Abstract
The growth, proximate composition, and trace metal profile of Pleurotus pulmonarius cultivated on oil-polluted soil covered with Andropogon gayanus grass straw were evaluated. The soil, polluted with 200 g/ wv condemned engine oil (8% pollution), was covered with 5 and 10 cm of grass straw, and the P. pulmonarius spawn inoculated. The mushroom growth was monitored over 21 days, measuring cap size, stipe length, stipe girth, and fresh weight for two harvests. Cap sizes ranged from 4.94 to 7.10 cm and 4.5 to 7.36 cm; stipe lengths, from 2.3 to 5.86 cm and 1.07 to 6.22 cm; stipe girths, from 3.04 to 3.93 cm and 1.77 to 5.08 cm; fresh weights, from 31.69 to 65 g/kg and 40.33 to 55 g/kg. At P ≤ 0.05, there was no significant difference in the growth parameters measured, nor was there any effect of crude oil pollution on the growth of the mushrooms. The mushroom fruiting bodies were also screened for possible presence of trace metals such as Fe (23.29-37.95 mg/kg); Zn (14.12-21.80 mg/kg); Pb (0.03-0.06 mg/kg); Cd (0.02 -0.032 mg/kg); Cr (0-0.05 mg/kg); and As (0-0.03 mg/kg). Comparing the trace metals, especially Pb, Cd, and Cr, which are detrimental to human health, with the provisional tolerable weekly intake (PTWI) that a consumer may take, it was shown that all the trace metals were within the provisional tolerable limit intake.
PMID:
40228220
Bibliographic data and abstract were imported from PubMed on 15 Apr 2025.
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