Purification and characterization of antioxidant components from the fruiting bodies of Pleurotus abalonus including 9-beta-d-ribofuranosidoadenine, 5′-deoxy-5′-(methylthio)adenosine, and a triterpenoid

9-Beta-d-ribofuranosidoadenine (ADO), 5′-deoxy-5′-(methylthio)adenosine (MTA) and a triterpenoid purified from Pleurotus abalonus display different antioxidant activities as well as the significant synergistic effect on hydroxyl radical scavenging.