天然产物研究与开发 ›› 2014, Vol. 26 ›› Issue (8): 1299-1302.

• 开发研究 • 上一篇    下一篇

双水相-微波提取苎麻皮中总黄酮及抗氧化性研究

何慧蓉1,黄 艺1,邓选利1,但 梅1,刘德兵1,阮尚全 1,2*   

  1. 1 内江师范学院化学化工学院;2 四川省高等学校果类废弃物资源化重点实验室,内江 641112
  • 出版日期:2014-08-30 发布日期:2014-11-06

Extraction and Antioxidant Activity Investigation of Total Flavonoids from Ramie Skin

HE Hui-rong1, HUANG Yi1, DENG Xuan-li1, DAN Mei1, LIU De-bing1, RUAN Shang-quan1,2*   

  1. 1 College of Chemistry and Chemical Engineering,Neijiang Normal University;2 Key Laboratory of Fruit  Waste Treatment and Resource Recycling of the Sichuan Provincial College,Neijiang,Sichuan 641112 ,China
  • Online:2014-08-30 Published:2014-11-06

摘要: 在乙醇-硫酸铵双水相体系中,以苎麻皮为原料,采用微波法提取苎麻皮中的总黄酮。通过单因素实验考察了乙醇浓度、料液比、硫酸铵用量、提取功率、提取时间对提取率的影响。用正交试验确定了最优提取条件,即在料液比1:50 g/mL、硫酸铵用量为0.2 g/mL、提取功率为200 W、提取时间为120 s,乙醇体积浓度为70%时提取率可达2.442%。采用了水杨酸法和邻苯三酚自氧化法对黄酮抗氧化性进行了研究,结果表明苎麻皮黄酮对O2·和·OH具有较强的清除作用。

关键词: 苎麻皮, 双水相, 微波, 总黄酮, 抗氧化性

Abstract: In this study,microwave extraction technology integrated with ethanol and aqueous ammonium sulfate solution two-phase separation was applied to extract total flavonoids from Ramie skin.Based on single factor experiment,ethanol concentration,solid-liquid ratio,the concentration of ammonium sulfate,extraction power and the time of extraction on extraction yield of total flavonoids were investigated.By orthogonal experiment,the optimum extracting conditions were optimized as follows:ratio of solid to liquid was 1:50 g/mL,the concentration of ammonium sulfate was 0.2 g/mL,extraction power was 200 W,extraction time was 120 s,the ethanol concentration was 70%,the highest extraction yield reached to 2.442% under the optimized extraction conditions.In addition,the total flavonoids extract showed scavenging activities on O2-·and ·OH in the antioxidant activity assays.

Key words: Ramie skin, microwave, aqueous two-phase, total flavonoids, antioxidant activity

中图分类号: 

TS255.1