天然产物研究与开发 ›› 2016, Vol. 28 ›› Issue (增刊2): 239-243.doi: 10.16333/j.10016880.2016.S.011

• 研究论文 • 上一篇    下一篇

枸杞清除自由基活性组分筛选

刘建飞1,燕玉奎2, 杜津昊3,刘晓风3*,邸多隆1*   

  1. 1中国科学院兰州化学物理研究所 中国科学院西北特色植物资源化学重点实验室和甘肃省天然药物重点实验室;2甘肃中医药大学药学院,兰州 730000; 3兰州理工大学 生命科学与工程学院 兰州 730050
  • 出版日期:2016-12-31 发布日期:2017-03-03

Screening on Active Fractions of Scavenging Free Radical from Lycium burbrum L.

LIU Jianfei1,YAN Yukui2,DU Jinhao3,LIU Xiaofeng3*,DI Duolong1*   

  1. 1Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of  Gansu Province,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences;2Department  of Pharmacy,Gansu University of Chinese Medicine,Lanzhou 730000,China;3College of Life science and  Engineering,Lanzhou University of Technology,Lanzhou 730050,China
  • Online:2016-12-31 Published:2017-03-03

摘要: 本文通过乙醇回流提取、大孔吸附树脂分离富集,得到6个枸杞乙醇提取物组分A ~F。采用DPPH法,以Vc作为对照,对A~F进行清除自由基活性评价,得到清除DPPH·自由基最佳活性部位;并采用HPLC和UV法,探究清除自由基的物质基础。结果表明,6个枸杞乙醇提取物组分A ~F中,E组分清除DPPH·的活性最强,DPPH·半数清除浓度(IC50)为0.6 mg/mL。经热力学研究,清除过程为吸热反应。通过HPLC和UV法分析发现,E组分总黄酮的含量最高,为30.2%,主要含有芦丁和槲皮素。

关键词: 枸杞黄酮, 1, 1二苯基2三硝基苯肼, 组分, 清除自由基活性, 高效液相色谱

Abstract: In this study,6 kinds of extract fractions were obtained from Lycium barbarum using reflux and macroporous resin.And then antioxidant activity of 6 kinds of extract fractions were evaluated using the DPPH(1diphenyl2picrylhydrazyl)radical scavenging assay to find the best activity site.Sequentially,main activity component in extract fractions were speculated by UV and HPLC assays and comparing chromatogram of the reference standard.The result showed Fraction E posses the most activity of scavenging free radical,the IC50 was 0.6 mg·mL1,and the cleaning process was endothermic reaction.Through the UV and HPLC chromatogram of extract fractions with that of the reference standard analyzed,it was found that the highest total flavonoid content is Fraction E with 30.2%,and rutin and quercetin were main active components.

Key words: Wolfberry flavonoids, 1diphenyl2picrylhydrazyl, fractions, radical scavenging, HPLC

中图分类号: 

R284