Evaluation of production and antioxidant activity of Pleurotus ostreatus cultivated on lignocellulosic substrates
DOI:
https://doi.org/10.35977/0104-1096.cct2022.v39.26933Keywords:
phenolic compounds, Shimeji mushroom cultivation, rice husk substrate, eucalyptus sawdust substrateAbstract
This research aimed to evaluate the growth of Pleurotus ostreatusin lignocellulosic substrates and the antioxidant activity of cultivated basidiomes. The inoculum was purchased by the company Funghi & Flora. Two substrates were prepared, one based on eucalyptus sawdust (Eucalyptus sp.) and the other based on rice husk (Oryza sativa). Cultivation parameters were evaluated, such as the time required for the beginning of the spawns, weight of the basidiomas and the biological efficiency. After the growth and maturation of the basidiomas, a phytochemical and antioxidant potential analysis of the extracts was performed. The extracts were prepared by hot extraction, using soxhlet equipment and ethanol as solvent. The phytochemical analysis was carried out through chromogenic characterization reactions, and the antioxidant test was performed through the absorption of oxygen radicals by the ORAC method. The results indicated that the sawdust-based substrate was more promising, completing the mycelial race in the shortest time, with the appearance of the primordia on the 23rd day, and with greater biological efficiency (7.6%) compared to the rice husk substrate (6.7%). As for the phytochemical analyses, there was a positive result for flavonoids and tannins in both substrates, but the antioxidant activity was positive only in the basidiomes cultivated in sawdust.