摘要
在室温下用间歇式快速搅拌法从印楝种仁中浸提印楝油和印楝素。讨论了料液比以及浸提时间对得率的影响。结果表明:印楝种仁300g,以750mL石油醚做溶剂,在快速搅拌条件下浸提21min时印楝油得率最高;将300g去油后的印楝种仁以900mL甲醇做溶剂,在快速搅拌下浸提21min时印楝素得率最高。由此得出,快速搅拌法浸提印楝油的最佳条件是:溶剂石油醚、料液比1∶2.5(g∶mL,下同)、时间每次7min、浸提3次,出油率30.4%;快速搅拌法浸提印楝素的最佳条件是:溶剂为甲醇、料液比1∶3、时间每次7min、浸提3次,印楝素A的得率为0.438%,印楝素B的得率为0.142%。
Neem oil and azadirachtin were extracted batchwisely from neem seeds under rapid agitation at room temperature. The effects of solvent, components ratio and extraction time on the yield of neem oil and azadirachtin were discussed. The yield of neem oil was the highest under the condition as follows： 300 g neem seeds were rapidly agitated for 21 min in 750 mL petroleum ether. The highest yield of azadirachtin was obtained when 300 g skimmed neem seeds were rapidly agitated for 21 min in 900 mL methanol. The optimized condition of rapid agitation extraction of neem oil was ： petroleum ether solvent, components ratio 1 ： 2.5 （g： mL）, extraction time 7 min every time, for 3 times. The oil yield was 30.4 %. The optimized condition of rapid agitation extracion of azadirachtin was ： methanol solvent, components ratio 1 ： 3 （ g ： mL）, extraction time 7 min every time, for 3 times. The yields of azadirachtin A and azadirachtin B were 0.438 % and 0. 142 % ,respectively.
出处
《林产化学与工业》
EI
CAS
CSCD
2007年第2期117-119,共3页
Chemistry and Industry of Forest Products
基金
国家林业局"948"项目资助(2002-58)
国家科技支撑计划项目(2006BAD18B04)
关键词
搅拌浸提
印楝油
印楝素
agitation extraction
neem oil
azadirachtin
