摘要
对比研究了从苦楝树皮中提取苦楝素的几种方法,通过实验,得出了不同提取方法的最佳条件。超临界CO2萃取在萃取温度45℃、压力20MPa、夹带剂为60%乙醇的情况下萃取2h,苦楝素的萃取率为0.850%;微波辅助提取法,以60%乙醇为溶剂,料液比为1∶9(g∶mL,下同),微波功率340W,辐射时间40s×3次,苦楝素的提取率为0.693%;超声波提取法,以60%乙醇为溶剂,料液比为1∶9,超声波作用时间为30min,超声波功率为200W,苦楝素的提取率为0.715%。将上述3种提取方法与传统的有机溶剂提取法进行详细的比较,结果表明:对于苦楝素提取,超声波提取法最好。
Extraction methods of toosendanin from Melia azedarach L. were systematically investigated and compared in detail in this paper, including supercritical carbon dioxide extraction, ultrasonic extraction, microwave-assisted extraction and traditional solvent extraction. The results indicated that the ultrasonic extraction method was the preferred one among these methods. In the case of ultrasonic extraction, optimum conditions were as follows： 60% ethanol as solvent, ratio of feedstock to liquor 1 ： 9, extraction time 30 min, temperature 40℃, and ultrasonic power 200 W. Under the optimum conditions, the yield of toosendanin was 0.715 %.
出处
《林产化学与工业》
EI
CAS
CSCD
2005年第4期79-82,共4页
Chemistry and Industry of Forest Products
关键词
苦楝素
微波辅助提取法
超声波提取法
超临界CO2
萃取法
toosendanin
microwave-assisted extraction
supercritical carbon dioxide extraction
ultrasonic extraction
