FOOD SCIENCE ›› 2011, Vol. 32 ›› Issue (17): 160-163.doi: 10.7506/spkx1002-6630-201117032

• Basic Research • Previous Articles     Next Articles

Total Phenolic Acid Content, Total Flavonoid Content and Antioxidant Activity of Dandelion Flowers

YANG Lan,LI Hua-feng,DIAO Hai-peng,TANG Xing-yu,PENG Tai-fang,SUN Ti-jian*   

  1. (Department of Basic Chemistry, Shanxi Medical University, Taiyuan 030001, China)
  • Published:2011-08-30

Abstract: In order to determine the contents of dandelion flowers, the material was extracted with 75% aqueous ethanol under the aid of ultrasonic. Meanwhile, the resultant ethanol extract was tested for its abilities to scavenge superoxide anion and hydroxyl free radicals and inhibit peanut oil autooxidation. The results indicated that the contents of total phenolic acid and total flavonoids in dandelion flowers were 4.09% and 3.65%, respectively. The ethanol extract from dandelion flowers could effectively scavenge superoxide anion and hydroxyl free radicals and inhibit peanut oil autooxidation in a dose-dependent manner. The half inhibitory concentrations against superoxide anion and hydroxyl free radicals were 96.1 μg/mL and 7.7μg/mL, respectively. The peroxide value (POV) of peanut oil showed a marked decline in the presence of the ethanol extract and the efficacy was similar to that of 0.10% vitamin C addition.

Key words: dandelion flower, phenolic acid, flavonoids, antioxidant activity

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