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论文编号:HG144 论文字数:11017,页数:26 摘 要：对葛根黄酮提取工艺进行优化，得出较佳提取条件，可应用于葛根黄酮的工业化提取。实验以葛根黄酮提取率为指标，对葛根黄酮提取过程中的溶剂乙醇质量分数、提取时间、固液比、提取温度、pH、提取次数、重复性以及回收溶剂的再利用等因素进行了考察，最后用正交法进行优化。实验结果表明：葛根黄酮的初步提取工艺为溶剂乙醇质量分数为70%，提取时间为120min，固液比为1:10，提取温度为70℃，pH=5，提取次数1次；浸提操作重复性好，溶剂回收再利用可行并且溶剂的回收率高达94.3%。通过正交设计得出较佳条件为：乙醇质量分数为50%，提取时间为120min，固液比为1:12，提取温度为80℃。 Abstract: The optimization experiment of puerarin flavonoids was carried out and the optimal extraction condition was determined, and accordingly to be used in industrialization extracting of puerarin flavonoids. In the experiment Puerarin flavonoids yield was taken as an index, mass fraction of ethanol, extraction time, solid-liquid ratio, extraction temperature, solution pH, extraction times, repeatability, recovery and reuse of solvent in the extraction process were studied, finally the experiment was optimized by orthogonal. The results showed that the mass fraction of ethanol was 70%, the extraction time was 120min, the solid-liquid ratio was 1:10, the extraction temperature was 70℃, the solution pH was 5, the extraction times was 1; repeatability for extraction operation was good, recycling solvents was feasible and the solvent recovery was up to 94.3%. The better conditions were obtained by orthogonal design as follows: the mass fraction of ethanol was 50%, the extraction time was 120min, the solid-liquid ratio was 1:12, the extraction temperature was 80℃.
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| Tags：正交 优化 葛根黄 提取 工艺 | 2011-03-31 09:55:36【返回顶部】 |
