Evaluation of Biodegradability Potentials of Pleurotus ostreatus (jacq) P. Kumm. Cultivated on Solid Wastes Supplemented with Medicinal Plant Leaves

Abstract

Mushrooms can be considered as an ecological bioconversion tools to recycle agricultural and agro-industrial wastes. Hence, the objective of this paper was to evaluate the biodegradability potentials of Pleurotus ostreatus (jacq) P. Kumm cultivated on solid wastes supplemented with medicinal plant leaves using standard chemical and biological methods. The yield and biological efficiency of P. ostreatus revealed that oil palm fibre supplemented with M. oleifera had highest (124) and (82.66 %) while P. ostreatus cultivated on rags had least (66) and (44.00 %). Degradation of lignin had highest (67.77 %) at (spawn run) in P. ostreatus cultivated on rags, while cellulose and hemicellulose had highest (28.58 % and 33.01%) in P. ostreatus cultivated on plantain peels supplemented with M. oleifera and pampers supplemented with C. citratus respectively. Percent carbon content of rags had highest (43.34 %, 39.12 %, 35.76 % and 27.29 %) at first day, spawn run, fructification and spent compost (at harvest) respectively. The nitrogen content increases as the growth phase progresses, plantain peels supplemented with M. oliefera had highest (2.41 %, 2.83 %, 2.95 % and 3.01 %) and least of (0.21 %, 0.40 %, 0.73 % and 1.21 %) occurred on pampers supplemented with M. oliefera at first day, spawn run, fructification and spent compost (at harvest) respectively. Cultivation of P. ostreatus on solid wastes supplemented with medicinal plant leaves can be a good means of waste management and production of mushroom rich in nutraceutical properties.