摘要
以酶法生产生物柴油的废渣为原料,通过预处理、深度皂化、溶剂提取可得到天然植物甾醇。研究结果表明,1 mol/L KOH乙醇溶液体积与原料质量比为10∶1,皂化时间为5 h,皂化温度为80℃,正己烷体积与原料质量比为40∶1的条件下,粗植物甾醇的提取率和纯度分别为95.0%和50.1%。粗甾醇经无水乙醇重结晶2次后,其纯度可达90.13%。
Phytosterols were extracted from the residue of biodiesel by pretreatment, deep saponification, and solvent extraction. The results showed that the yield and the purity of the crude phytosterols were 95.0% and 50. 1% , respectively, under the following conditions：saponification solvent 1 mol/L potassium hydroxide - ethanol solution, ratio of saponification solvent volume to pretreated material mass 10： 1, saponification time 5 h, saponification temperature 80℃, extraction solvent n - hexane, ratio of n - hexane volume to the pretreated material 40： 1. After crystallization for 2 times with anhydrous ethanol, the purity of the refined phytosterols Was 90. 13%.
出处
《中国油脂》
CAS
CSCD
北大核心
2011年第1期56-59,共4页
China Oils and Fats
基金
国家863计划(2009AA03Z232)
关键词
生物柴油废渣
植物甾醇
皂化
提取
residue of biodiesel
phytosterols
saponification
extraction
