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Antioxidant Capacity of Fresh and Processed Fruit Bodies and Mycelium of Auricularia auricula-judae (Fr.) Quél

2009; Mary Ann Liebert, Inc.; Volume: 12; Issue: 1 Linguagem: Inglês

10.1089/jmf.2007.0568

1557-7600

Y.S. Kho, Vikineswary Sabaratnam, Noorlidah Abdullah, Umah Rani Kuppusamy, Hee-Kyung Oh,

Botanical Research and Applications

Auricularia auricula-judae is currently grown in Malaysia. In the present study, the methanolic extracts from fruit bodies (fresh, oven-dried, and freeze-dried) and mycelium of A. auricula-judae were evaluated for their antioxidant capacities based on 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging activity and ferric reducing antioxidant power (FRAP) assay. The total phenolic content in the extracts were also measured. The extract of freeze-dried fruit bodies of A. auricula-judae had potent DPPH free radical scavenging activity with a 50% effective concentration of 2.87 mg/mL, whereas the FRAP value of A. auricula-judae mycelium was 5.22 μmol of FeSO4·7H2O equivalents/g of mycelium sample. Further, a positive correlation (R2 = 0.7668) between FRAP level of A. auricula-judae extracts and the total phenolic contents was observed. Thus the method of processing of fresh fruit bodies had an effect on the antioxidant potential of A. auricula-judae.