Cultivation of mushrooms using agricultural and industrial residues provides a very cheap and ecofriendly alternative for producing foods with high nutritional value. Currently, about 40% of sugarcane bagasse from sugar factories and a large quantity of wastepaper as well as biomass from lignocellulosic plants, which could have been used as cheap source of growth substrate for mushrooms. Thus, an experiment was conducted to cultivate three selected species of Pleurotus (Pleurotus florida, Pleurotus ostreatus and Pleurotus sajor-caju) using three different substrates and their combinations at Metahara Sugar Factory Research Station and to determine their biological efficiency and nutritional compositions. The results showed that the highest crude protein (35.93%) was obtained from Pleurotus ostreatus grown on sugarcane bagasse alone. The least crude protein (21.25 %,) was obtained from Pleurotus sajor-caju grown on the substrate combination of 50%waste paper +50%Leaves of Prosopis juliflora. Moisture content, crude fat, total ash, crude fiber, carbohydrate and biological efficiencies obtained from this experiment generally ranged from 77.5% - 85.5%,1.33%-2.07%,6.46%-8.06%, 8.8%-12.39%,34-26.6% and 44.6%-70.5%, respectively. In this study, the highest biological efficiency for the studied mushroom species was recorded from sugarcane bagasse (70.5%) followed by wastepaper (68.9%). In contrast, mushrooms grown on leaves of Prosopis juliflora alone showed the least (44.6%) biological efficiency. Negative results were recorded for Pleurotus florida and Pleurotus Sajor-caju when grown on LPJ alone. The nutritive values of the studied mushrooms were quite very high, and the selected growth substrates were reasonably as good as sugarcane bagasse when used in mixtures.
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[Zinabu Hamsalu Mosisa, Ameha Kebede and V.V.Preetha (2015); CULTIVATION OF SELECTED Pleurotus SPECIES USING SUGARCANE BAGASSE, WASTE PAPER AND LEAVES OF Prosopis juliflora (Sw.) DC. Int. J. of Adv. Res. 3 (2). 0] (ISSN 2320-5407). www.journalijar.com
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