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

Abstract

Although Pleurotus abalonus is a well-known edible mushroom in Asia, there is a dearth of information on its antioxidant activity. The present report is the first one focused on the purification and characterization of 9-beta-d-ribofuranosidoadenine (ADO), 5'-deoxy-5'-(methylthio) adenosine (MTA) and a triterpenoid complex from P. abalonus. Different antioxidant activities including inhibitory effects on hemolysis and lipid peroxidation in brain and kidney homogenates as well as significant synergistic effect on scavenging of hydroxyl radicals were demonstrated, which lays a foundation for the development of P. abalonus as a natural antioxidant applied in medicine.

Keywords: 2,2′-azobis (2-amidinopropane) dihydrochloride; 2-tert-butyl-4-methoxyphenol; 5′-Deoxy-5′-(methylthio) adenosine; 5′-deoxy-5′-(methylthio)adenosine; 9-Beta-d-ribofuranosidoadenine; 9-beta-d-ribofuranosidoadenine; AAPH; ADO; Antioxidant; BHA; IR; LC–MS; LPO; MTA; NC; PBS; PC; Pleurotus abalonus; TBA; TC; TCA; Triterpenoid; infrared spectroscopy; lipid peroxidation; liquid chromatography–mass spectrometry; nucleotide complex; phosphate buffered saline; polysaccharide–peptide; thiobarbituric acid; trichloroacetic acid; triterpenoid complex.