荔枝果皮中类黄酮提取工艺研究

研究潮州产荔枝果皮中类黄酮的乙醇提取工艺。以乙醇为溶剂,以荔枝果皮为原料,以荔枝果皮中类黄酮质量分数为考察指标,通过单因素和正交试验,考察乙醇质量分数、提取温度、固液比及提取时间对类黄酮质量分数的影响。最终确定乙醇质量分数60%、提取温度50℃、固液比1：20、提取时间2h为荔枝果皮中类黄酮的最佳提取工艺条件。在此工艺条件下,荔枝果皮类黄酮1次提取质量分数约为7.68%。

Research on the Extraction Technology of Flavonoids from Litchi Peel

The research aimed to study the extraction process of the flavonoids from the litchi peel by ethanol.Taking ethanol as the solvent and litchi peel as materials,with the mass fraction of flavonoids from the litchi peel as the survey index,the effects of ethanol mass fraction,extraction temperature,the ratio of solid to liquid and extracting time on the mass fraction of flavonoids were studied by using single factor test and orthogonal test.The optimum extraction conditions of flavonoids from litchi peel were...