天然产物研究与开发 ›› 2015, Vol. 27 ›› Issue (3): 432-437.doi: 10.16333/j.1001-6880.2015.03.012

• 研究简报 • 上一篇    下一篇

酶辅助法提取透骨草中总黄酮及抗氧化性研究

李会端*, 乔爱平   

  1. 楚雄师范学院化学与生命科学系,楚雄 675000
  • 出版日期:2015-03-30 发布日期:2015-04-07

Enzyme-assisted Extraction of Total Flavonoids from Speranskia and Study on Antioxidant Effects

LI Hui-duan*,QIAO Ai-ping   

  1. Chuxiong Normal University,Department of Chemistry and Life Science,Chuxiong,675000,China
  • Online:2015-03-30 Published:2015-04-07

摘要: 本文采用纤维素酶辅助法提取透骨草中总黄酮,即先用纤维素酶酶解透骨草,再用乙醇回流法提取透骨草中的总黄酮。分别固定提取剂乙醇浓度为70%,料液比为1:20 g/mL,初步探究了纤维素酶浓度、酶解pH、酶解温度、酶解时间四个单因素对透骨草总黄酮提取率的影响。设计正交实验确定了酶辅助法提取透骨草中总黄酮的较佳条件:纤维素酶浓度为2 U/mL、酶解pH = 4.5、酶解温度为45 ℃、酶解时间2 h,总黄酮提取率为1.27%。本文初步探究了透骨草总黄酮提取液对羟自由基的清除活性,对照实验结果表明透骨草提取液对羟自由基清除活性要高于相同浓度的芦丁与二丁基羟基甲苯。

关键词: 酶辅助法, 透骨草, 总黄酮, 提取率, 清除活性, 羟自由基

Abstract: Enzyme-assisted extraction of total flavonoids from Speranskia was studied in this paper.Frist enzymatic hydrolysis by cellulase,and then reflux by ethanol to extract total flavonoids.Ethanol concentration of 70% and solid/liquid ratio of 1:20 g / mL were fixed.The preferred extraction conditions were determined by single factor experiment and orthogonal experiment.The experiment reveals that:cellulase concentration of 2 U/mL,enzymatic hydrolysis pH of 4.5,enzymatic hydrolysis temperature of 45 ℃ and enzymatic hydrolysis time of 2.0 h.The extraction ratio of total flavonoids reached up to 1.27% by using spectrophotometry.Antioxidant effects of flavonoids、rutin solution and BHT were measured to remove hydroxyl radicals by comparative experiments.Antioxidant experiments showed that flavonoids from speranskia showed a strong scavenging effect on hydroxyl radicals.

Key words: enzyme-assisted extraction, speranskia, flavonoids, extraction ratio, scavenging effect, hydroxyl radicals

中图分类号: 

S131 S132