The vertical mycelial growth to investigate the feasibility of Pleurotus ostreatoroseus DPUA 1720 production in lignocellulosic Amazonic residues was evaluated. Mycelial development was carried out in cupuaçu exocarp (Theobroma grandiflorum Willd Former Spreng Schum), açai seed (Euterpe oleracea) and sawdust as substrates. Each residue was supplemented with rice bran, crown and pineapple peel. The average speed of mycelial growth was determined using three replicates for 15 days at 25°C in the absence and presence of light and mycelial vigor and density were evaluated. Five replicates of the selected substrate were used in mushroom production. Vigorous mycelium and strongly dense growth were observed in cupuaçu exocarp treatment supplemented with rice bran. The biological efficiency, production rate and productivity were 22.90, 54.33 and 3.55%, respectively in this substrate. The basidiomata showed low levels of minerals and fat and can be considered as a source of protein (23.53%) and fiber (12.79%).
Key words: basidiomata, edible mushroom, agro-industrial wastes.
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