超声波提取芦荟中蒽醌类物质工艺的研究

[目的]探讨超声波辅助法对芦荟中的蒽醌类物质进行提取的工艺条件。[方法]选取对超声波提取效果影响较大的3个重要因素（乙醇浓度、提取时间、料液比）,设置单因素试验,考察各因素对总蒽醌得率的影响。根据单因素试验结果进行正交试验,优选出乙醇浸提法提取芦荟总蒽醌的最佳工艺参数。[结果]影响超声波法提取芦荟中蒽醌类物质的因素依次为：乙醇浓度〉料液比〉提取时间。正交试验筛选出的超声波提取芦荟中蒽醌类物质的最佳工艺条件为：乙醇浓度70%、提取时间30 m in、料液比1∶45,在此条件下做验证试验得到平均提取率为1.42%。[结论]超声波在短时间内可以得到较高的蒽醌得率,在节约时间和降低能源损耗方面具有明显优势。

Study on the Ultrasonic Extraction Process of Anthraquinones from Aloe

[Objective] The study aimed to discuss the process condition of extraction on anthraquinones from aloe by ultrasonic assistant method.[Method] The 3 important factors(ethanol concn.,extraction time,solid-liquid ratio) that had great effect on ultrasonic extraction was selected to set up single factor test and investigate the effects of all factors on total anthraquinones yield.According to the result of the single factor result,the orthogonal experiment was made for optimally selecting the optimum process parameter of extracting total anthraquinones from aloe by alcohol extraction method.[Result] The factors of effecting extraction on anthraquinones form aloe by ultrasonic assistant method in order were ethanol concn.>solid-liquid ratio> extraction time.The optimum process condition of extracting anthraquinones from aloe by ultrasonic from orthogonal experiment was as follows: ethanol concn.of 70%,extraction time of 30 min,solid-liquid ratio of 1∶45,under which the average extraction radio was 1.42% through validate test.[Conclusion] Ultrasonic could get the higher anthraquinones yield at the short time,which had the remarkable advantage on saving time and decreasing energy loss.