食品科学 ›› 2009, Vol. 30 ›› Issue (6): 52-56.doi: 10.7506/spkx1002-6630-200906007

• 工艺技术 • 上一篇    下一篇

三裂蟛蜞菊茎总黄酮含量的提取及其抗氧化性研究

朱 慧1,马瑞君1,吴双桃2,庞淇尹1   

  1. 1.韩山师范学院生物系 2.韩山师范学院环境化学应用技术研究所
  • 收稿日期:2008-05-17 修回日期:2008-10-04 出版日期:2009-03-15 发布日期:2010-12-29
  • 通讯作者: 朱慧 E-mail:gdzhuhui@126.com
  • 基金资助:

    广东省自然科学基金项目(2007009850)

Extraction and Antioxidant Activity of Total Flavonoids from Stem of Wedelia trilobata L.

ZHU Hui1,MA Rui-jun1,WU Shuang-tao2,PANG Qi-yin1   

  1. (1. Department of Biology, Hanshan Normal University, Chaozhou 521041, China;
    2. Research Institute of Environmental Chemistry and Technology, Hanshan Normal University, Chaozhou 521041, China)
  • Received:2008-05-17 Revised:2008-10-04 Online:2009-03-15 Published:2010-12-29
  • Contact: ZHU Hui1 E-mail:gdzhuhui@126.com

摘要:

本实验对从三裂蟛蜞菊茎中提取总黄酮的工艺进行优化,并对提取的总黄酮进行抗氧化性测定。结果表明:三裂蟛蜞菊的总黄酮含量为4.1%;最佳的工艺提取条件是70% 的乙醇溶液按固液比1:25(m/V)配比,在温度50℃、功率210W 超声波条件下处理20min;在本实验设置的三个质量浓度梯度条件下,总黄酮提取液对羟由基、超氧阴离子自由基最大平均清除率分别达到20.16%、41.59%,对H2O2 的最大抑制率达到55.22%,随着实验时间的增加,高质量浓度的提取液能显著延缓猪油自氧化的速度,虽然提取液具有一定的抗氧化能力,但与相应质量浓度的常用抗氧化剂BHT 的抗氧化能力相比,仍存在显著的差异。

关键词: 三裂蟛蜞菊, 总黄酮, 抗氧化性

Abstract:

The extraction technology of total flavonoids from stem of Wedelia trilobata L. and its oxidation resistance were investigated. The results showed that the optimum extractant, liquid-solid ratio, temperature, ultrasonic wave power, ultrasonic wave treated time for extraction are 70% ethyl alcohol, 1:25, 50 ℃, 210 W and 20 min, respectively, and the obtained total flavonoids content from stem is 4.1%. Moreover, with three mass concentration gradients, the average maximum clearance rates of the extract to ·OH and O2· are 20.16% and 41.59% respectively, especially its maximum inhibitory rate to H2O2 reaches 55.22%. With the storage time extending, the high concentration extract can more significantly reduce the autoxidation speed of lard. However, there is significant difference of antioxidant activity between common antioxidant BHT and the total flavonoid extract.

Key words: Wedelia trilobata L., total flavonoids, antioxidant activity

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