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    超声辅助深共熔溶剂提取两种烟草多酚的方法研究

    Green Extraction of Two Target Tobacco Phenolic Compounds Using Deep Eutectic Solvents

    • 摘要: 为拓展新型绿色溶剂——深共熔溶剂应用,以烟叶为原料,比较11种深共熔溶剂对烟草中两种多酚类化合物的提取效果,通过单因素试验和正交试验确定最佳提取条件,采用固相萃取柱分离深共熔溶剂提取液中的多酚类化合物。结果表明,当氯化胆碱-苹果酸组成的深共熔溶剂体系作为提取溶剂,质量分数为40%的水/DES(体积比)为辅助溶剂,超声波为辅助提取手段,提取温度为50℃,提取时间为30 min时,绿原酸、芸香苷提取量分别为(16.95±0.69)、(8.53±0.52)mg/g,回收率分别为91.67%和99.81%。与常用有机溶剂提取烟草中多酚类化合物相比,深共熔溶剂是一种合适的绿色提取溶剂,它可以成功地应用于生物活性物质提取及分析。

       

      Abstract: In order to expand the application of the emerging green solvent called deep eutectic solvents (DES), eleven different DES were used as extraction solvents for two phenolic compounds in tobacco leaves and then the best extraction conditions were determined through single factor test and orthogonal test. Finally, solid phase extraction columns were used to separate phenolic compounds from deep eutectic solvents. The results showed that under the condition of microwave at 50℃, using choline chloride/malic acid as solvents, 40% (V/V) of water as co-solvents, within 30 minutes, a total of (16.95±0.69), (8.53±0.52) mg/g chlorogenic acid, rutin were extracted respectively. Finally, the recovery of phenolic compounds from DES by macroporous adsorption resins was also investigated. Recovery rates of chlorogenic acid, rutin reached 91.67% and 99.81%, respectively. By comparing with convertional extraction solvents for phenolic compounds, DESs were shown to have great potential as green extraction and composition analysis solvents for bio-active ingredients.

       

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