1. Antioxidant capacity of fresh and processed fruit bodies and mycelium of Auricularia auricula-judae (Fr.) Quél.
- Author
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Kho YS, Vikineswary S, Abdullah N, Kuppusamy UR, and Oh HI
- Subjects
- Antioxidants isolation & purification, Biphenyl Compounds, Ferrous Compounds, Free Radical Scavengers isolation & purification, Freeze Drying, Mycelium, Phenols isolation & purification, Picrates, Antioxidants pharmacology, Basidiomycota chemistry, Free Radical Scavengers pharmacology, Plant Preparations pharmacology
- 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 micromol of FeSO(4).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.
- Published
- 2009
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