The cultivation of Pleurotus pulmonarius was carried out on different substrate: cotton waste (A) leaves of Cymbopogon citratus (B) and leaves of Panicum maximum Jacq. (C). The mushroom had a varied chemical composition; nevertheless they contained a good composition for to be used as a good source of protein for human kind. The results showed the higher protein content (29.19%) and fibre (9.0%) for the mushroom that were cultivated on cotton peel. The substrate composition and the residue composition after the mushroom harvest were: Protein for the substrate "A" (10.63% and 9.35%), "B" (7.87% and 4.24%) and "C" (7.55% and 5.90 %); Lipids "A" (4.17% and 2.03%), "B"(2.77% and 3.20%) and "C" (0.91% and 2.05%); Fibres "A" (49.02% and 37.02%), "B" (28.40% and 23.26%) and "C" (37.50% and 26.66%) respectively. The substrate "A" showed 0.048% of iron and "C" 0.14% of magnesium, 0.31% of potassium and 0.26% of calcium. In the substrate "B" the quantity of the minerals were very low in comparison to the other substrates. The residues after the harvest of mushroom could be used as fertiliser or as complement in the composition for animal feed.
Edible mushroom; chemical composition; Panicum maximum Jacq.; Cymbopogon citratus; cotton waste
