Location: Renewable Product Technology ResearchTitle: Antioxidant and antibacterial activities of acetonitrile and hexane extracts of Lentinus tigrinus and Pleurotus djamour
|DULAY, RICH MILTON R - Central Luzon State University|
|MIRANDA, LUILENE - Central Luzon State University|
|MALASAGA, JAMES - Central Luzon State University|
|KALAW, SOFRONIO - Central Luzon State University|
|REYES, RENATO - Central Luzon State University|
Submitted to: Biocatalysis and Agricultural Biotechnology
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 12/2/2016
Publication Date: 12/7/2016
Citation: Dulay, R.M., Miranda, L.A., Malasaga, J.S., Kalaw, S.P., Reyes, R.G., Hou, C.T. 2016. Antioxidant and antibacterial activities of acetonitrile and hexane extracts of Lentinus tigrinus and Pleurotus djamour. Biocatalysis and Agricultural Biotechnology. 9:141-144.
Interpretive Summary: Wild edible mushrooms are widely consumed in many countries. Recently, we successfully cultivated four edible medicinal Philippine mushrooms in liquid culture. In this study, we demonstrated that the mushrooms Lentinus tigrinus and Pleurotus djamour contained lipids that had significant antioxidant and antibacterial activities that could be a valuable resource in nutraceutical applications. This study will advance not only the knowledge of mushrooms lipid contents of these Philippine mushrooms but also will serve for comparison to those lipids from mushrooms produced in the U.S. Studies of oils and lipids content of agricultural materials (mushrooms) are mutual interest to both countries.
Technical Abstract: 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.