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投稿时间：2021-03-24
投稿时间：2021-03-24
中文摘要: 采用表面活性剂辅助提取鱼腥草黄酮，通过正交设计优化黄酮的提取工艺，并对黄酮提取过程的动力学进行研究。结果表明：最佳提取工艺为吐温20添加量1 g/L、提取温度80℃、乙醇浓度50%、料液比1∶40 g/mL、提取时间60 min，黄酮得率达到2.59%。此外，50℃～80℃时，提高温度能促进黄酮的浸出，95℃时会发生黄酮热降解；吐温20能提高黄酮的浸出量，但这种提高在高温下会被削弱；对动力学试验数据拟合得到吐温20辅助提取鱼腥草黄酮动力学模型为pagenumber_ebook=68,pagenumber_book=60可用于鱼腥草黄酮提取的工艺优化。
Abstract:The process of surfactant-assisted extraction of flavonoids from Houttuynia cordata Thunb.was optimized by single factor test and orthogonal test，and the kinetics of the extraction process was studied.The optimum extraction process was determined as extraction with 1 g/L tween-20，50% ethanol，and solid-liquid ratio of 1∶40 g/mL at 80 ℃ for 60 min.Under the optimized conditions，the extraction rate of flavonoids reached 2.59%.Increasing temperature promoted the extraction of flavonoids at 50℃-80℃，and thermal degradation of flavonoids occurredat 95℃.Tween-20 improved the extraction of flavonoids，while such increase would be weakened at high temperature.The kinetic model of Tween-20-assisted extraction of flavonoids from H.cordata Thunb was established aspagenumber_ebook=68,pagenumber_book=60which could be used for the process optimization of flavonoids extraction from H.cordata.
文章编号：202206008 中图分类号： 文献标志码：
基金项目:广西高校中青年教师科研基础能力提升项目（2021KY0742、2018KY0583）
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