Antioxidant and antibacterial activities of acetonitrile and hexane extracts of Lentinus tigrinus and Pleurotus djamour

This paper highlighted the antioxidant and antibacterial activities of Lentinus tigrinus and Pleurotus djamour. Extracts of mushroom fruiting bodies were obtained using hexane and acetonitrile solvents. Acetonitrile extracts of both mushrooms exhibited higher biological activities than hexane extracts. L. tigrinus acetonitrile extract had 39.2% (EC50 value 637.75 mg/L) radical scavenging activity, contained 451 mg AAE (ascorbic acid equivalent)/g sample total phenolics, and showed 9.48 mm diameter zone of inhibition against Staphylococcus aureus. On the other hand, P. djamour acetonitrile extract had 32.8% (EC50 value 762.19 mg/L) scavenging activity, contained 982 mg AAE/g sample total phenolics, and inhibited S. aureus growth with 9.37 mm diameter zone of inhibition. Both hexane extracts did not show any inhibitory effect against the two bacteria used. Collectively, the acetonitrile extracts of L. tigrinus and P. djamour could be valuable resource of antioxidant and anti-S. aureus compounds which we need to isolate, characterize and identify.