Antioxidant capacity of fresh and processed fruit bodies and mycelium of auricularia auricula-judae (Fr.) quel
Document Type
Article
Publication Date
1-1-2009
Abstract
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 mu mol of FeSO(4)center dot 7H(2)O equivalents/g of mycelium sample. Further, a positive correlation (R(2) = 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.
Keywords
Auricularia Auricula-Judae, Ferric Reducing Antioxidant Power (FRAP)
Divisions
fac_med
Publication Title
Journal of Medicinal Food
Volume
12
Issue
1
Publisher
Mary Ann Liebert
Additional Information
Kho, Y. S. Vikineswary, S. Abdullah, Noorlidah Kuppusamy, U. R. Oh, H. I.