Antioxidant capacity of fresh and processed fruit bodies and mycelium of Auricularia auricula-judae (Fr.) Quél

J Med Food. 2009 Feb;12(1):167-74. doi: 10.1089/jmf.2007.0568.

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.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antioxidants / isolation & purification
  • Antioxidants / pharmacology*
  • Basidiomycota / chemistry*
  • Biphenyl Compounds
  • Ferrous Compounds
  • Free Radical Scavengers / isolation & purification
  • Free Radical Scavengers / pharmacology*
  • Freeze Drying
  • Mycelium
  • Phenols / isolation & purification
  • Picrates
  • Plant Preparations / pharmacology*

Substances

  • Antioxidants
  • Biphenyl Compounds
  • Ferrous Compounds
  • Free Radical Scavengers
  • Phenols
  • Picrates
  • Plant Preparations
  • ferrous sulfate
  • 1,1-diphenyl-2-picrylhydrazyl