摘要
亚临界的条件下在高压磁力搅拌釜内,采用油脂厂精炼过程中的副产物皂脚,利用弱酸醋酸溶液的中和作用,使反应向正反应方向进行,从而制得有用物质脂肪酸。考察了料液比、反应温度、反应时间、反应压强对皂脚水解率的影响,采用单因素和响应面优化的方法,最终确定反应最优条件为:料液比为1:2.2,反应温度为290℃,反应时间为45min,反应压强为14MPa,在最优条件下脂肪酸提取率为96.5%。亚临界醋酸水解法与传统提取方法相比,可明显缩短水解时间,无需添加强化学催化剂。
Using the environmentally friendly reaction solvent(acetic acid) to the hydrolysis the soapstock in the high-pressure magnetic agitator,to study the solid-liquid ratio, reaction temperature,reaction time, reaction pressure on the rate of hydrolysis of soapstock. Using the method of univariate and response surface optimization to finalize the anti-optimal conditions were:liquid ratio was 1:2.2,the reaction temperature was 290℃ ,the reaction time was 45min,the reaction pressure was 14MPa,the fatty acids extraction rate in the optimal conditions was 96.5%. Compared with the traditional methods,the method of sub-critical acetic acid hydrolysis could significantly shorten the extraction time without chemical catalyst and acid,ensure the purity of the product,so that was green.
出处
《食品工业科技》
CAS
CSCD
北大核心
2013年第4期263-266,269,共5页
Science and Technology of Food Industry
基金
国家十二五科技支撑计划项目(2011BAD02B01)
关键词
皂脚
亚临界
脂肪酸
响应曲面法
soapstock
subcritical water hydrolysis
fatty acids
response surface methodology