超临界二氧化碳法萃取杏仁油的研究

摘要

With variables of particle size,operating time,workingpressure,temperature and addition of SiO2,the supercritical CO2 extraction of almond oil was investigated.The following results were indicated:(1) Particle s izes operating time and woking pressure influenced the extraction yield of almon d oil;(2)Adding SiO2 (almond:SiO2=1∶1,w/w)greatly increased the oil yield;(3)The extracting speed reached its peak point in the first hour under all extrac ting conditions.%本试验旨在研究采用超临界二氧化碳从杏仁中提取油的条件。通过探索粒度、萃取时间、操作压力、萃取温度及添加剂(二氧化硅)对杏仁油萃取率的影响，结果表明：粒度、温度和压力会影响杏仁油的萃取率；添加二氧化硅(与原料质量比为1∶1)可大大提高萃取率；在各种萃取条件下，萃取速度在第一小时内达到最大。