Potencial nutritivo de cogumelos Pleurotus ostreatus cultivados em folhas de pupunheira

Abstract

This study aimed to define a culture condition for P. ostreatus using peach palm leaves as a substrate and evaluate nutritionally the fruiting bodies of this culture condition. Thus, a 22 full experimental design with center point varying the inoculation rate (5, 10 and 20 %) and fraction of rice bran (2, 5 and 10 %), was carried out. The prepared substrate was placed in polypropylene packages, supplemente d with rice bran and sterilized. After inoculation, the packages were kept at 30 °C in the absence of light until complete colonization of the substrate by the mycelium. Were then perforated to induce fruiting and sent to the cultivation chamber with controlled temperature (27 ± 2 ° C), relative humidity (90 ± 5 %) and light (12 h light / day) until the formation of fruiting bodies. The best culture condition was 20 % of inoculum and 2 % rice bran, which promoted 38.2 + 6.5 % yield, 5.0 + 0.2 % biological efficiency and 22.5 + 3.2 % loss of organic matter. The product obtained by drying and grinding the fruit bodies (mushroom powder) could be considered low fat food, high in protein and phosphorus, besides being a source of fibers by “Portaria” No. 27 of 1998 ANVISA. These results can stimulate the production of Pleurotus ostreatus in peach palm leaves.