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

• 基础研究 • 上一篇    下一篇

蒲公英花中总酚酸和总黄酮含量测定及其抗氧化性能研究

杨 岚,李华峰,刁海鹏,唐兴玉,彭太芳,孙体健*   

  1. 山西医科大学基础化学教研室
  • 发布日期:2011-08-30
  • 基金资助:
    山西省科学技术厅科技攻关项目(20090311057-1);山西省普通高等学校大学生创新性实验项目(2006-13-2)

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

摘要: 测定蒲公英花75%乙醇提取液中总酚酸和总黄酮含量,并测定该提取液对超氧阴离子自由基、羟自由基和油脂自氧化的清除作用。结果表明:蒲公英花中总酚酸平均含量为4.09%,总黄酮平均含量为3.65%。提取液对超氧阴离子自由基、羟自由基和油脂自氧化均有较好的清除效果,并在供试质量浓度范围内呈现量效关系。对超氧阴离子自由基的半数抑制率IC50为96.1μg/mL,对羟自由基的IC50为7.7μg/mL。蒲公英花提取液可使花生油的过氧化值(POV)显著降低,其效果与在花生油中添加0.10%的VC相当。

关键词: 蒲公英花, 总酚酸, 总黄酮, 抗氧化, 超氧阴离子, 羟自由基, 过氧化值(POV)

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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