摘要
研究了热回流提取时提取溶剂的种类、提取温度、料液比、提取时间和提取次数对枇杷叶中熊果酸含量的影响。正交试验结果表明:热回流提取的最佳提取工艺条件是以95%的乙醇为提取剂,料液比为1∶14,在80℃下提取2次,每次2h,此时熊果酸的提取率为1.150%。
The effect of reagent, extraction temperature, ratios of solid-to-solvent, extraction time and times of extraction on extraction rates of ursolic acid of the loquat leaves when extraction by circumfluence distillation was discussed in this paper. The results of orthogonal experiment indicate that the yield of ursolic acid was 1. 150% when the extracted twice by 95% ethanol at 80℃ （each time the solid-to-solvent ratios was 1 ： 14 and extraction time was 2 h）.
出处
《食品工业》
北大核心
2007年第3期22-24,共3页
The Food Industry
关键词
枇杷叶
熊果酸
热回流提取
提取条件
loquat leaves
ursolic acid
circumfluence distillation
extracting conditions
