摘要
采用循环连续柱萃取装置对双低油菜籽中油脂的萃取动力学进行研究 ,以获得 60 2油菜籽品种的萃取特性参数 ,建立萃取模型 ,为其油脂的加工提供理论参数。结果表明 :在萃取过程中 ,油脂的扩散系数随萃取时间呈先上升后下降的趋势。采用球形模型计算粉碎油菜籽的萃取动力学参数 ,其扩散速度常数为 0 0 0 8L/min,平衡常数为 1 570 ,萃取过程的平均扩散系数为 2 1× 1 0 -5mm2 /min。粉碎油菜籽的油脂萃取符合指数模型。
The kinetics properties of oil extraction from Chinese double low 602 rapeseed variety were studied using a continuous extractor.Diffusion coefficient during extract was decided according to Fick's law.Results indicated that the diffusion coefficient is increased at beginning of extracting,and followed by a decreasing due to the decrease of the concentration difference of oil.Ratio constant and mean diffusion coefficient is 0 008 L/min and 2 1×10 -5 mm 2/min respectively based on the globe model of the ground dehulled rapeseed.The process of the oil extraction meets the index model.
出处
《中国油脂》
CAS
CSCD
北大核心
2002年第4期5-8,共4页
China Oils and Fats
基金
武汉市晨光计划 9850 0 30 73项目部分研究内容
