Antioxidative Properties of Different Solvent Extracts from Persimmon (Diospyros kaki cv. Fuyu) Flower-Buds

  • You, Dong-Hyun (Department of Food Science and Biotechnology, Kyungnam University) ;
  • Lee, Seung-Cheol (Department of Food Science and Biotechnology, Kyungnam University)
  • Received : 2011.09.27
  • Accepted : 2011.11.18
  • Published : 2011.12.31


After preparation of acetone, ethanol, methanol, and water extracts (10 g/300 mL) of dried persimmon (Diospyros kaki cv. Fuyu) flower-buds, total phenolic contents (TPC), 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity (RSA), 2,2-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) RSA, reducing power (RP), and tyrosinase inhibitory activity of the extracts were evaluated. The methanol extracts produced the highest TPC (113.39 mg gallic acid equivalents/g), DPPH RSA ($IC_{50}=40.25\;{\mu}g/mL$), ABTS RSA ($IC_{50}=58.17\;{\mu}g/mL$) and RP ($IC_{50}=69.43\;{\mu}g/mL$) activities while the water extracts generated the lowest values. The ethanol extract showed the highest tyrosinase inhibitor activity (88.90%) at a concentration of 1 mg/mL. These results indicated that persimmon flower-buds may be a useful source of natural antioxidants.


Supported by : Kyungnam University


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