The soy bran provided a goodsource of protein for the fungus as we can see at the table 3 (20%). The results are very important for this edible mushroom, since they
present low lipid content (2.5%) and a high fiber level(18%).
The use of alternative substrates, easily obtained at low cost for the cultivation of edible mushrooms have been investigated in many publications (Özçelik and Pekşen, 2007; Philippoussis et al., 2007; Royse and Sanchez, 2007). The supplementation of the substrates with a nitrogen source, mainly with cereal bran, has been adopted to achieve a C/N ratio good for the production of mushrooms