分子蒸馏脱除核桃油中塑化剂工艺优化  

Optimization of removal of plasticizers from walnut oil by molecular distillation

作　　者：李长凤 冉春霞[1] 谭思远 谭小蓉[1] LI Changfeng;RAN Chunxia;TAN Siyuan;TAN Xiaorong(Department of Public Health and Management,Chongqing Three Gorges Medical College,Wanzhou 404120,Chongqing,China;School of Biomedicine and Food Engineering,Shangluo University,Shangluo 726000,Shaanxi,China)

机构地区：[1]重庆三峡医药高等专科学校公共卫生与管理学院,重庆万州404120 [2]商洛学院生物医药与食品工程学院,陕西商洛726000

出　　处：《中国油脂》2022年第5期78-80,81,87,共5页China Oils and Fats

摘　　要：为探索利用分子蒸馏脱除核桃油中塑化剂的合理工艺,采用单因素实验考察了蒸馏温度、进料速度和刮膜转速对核桃油中塑化剂DEHP和DBP脱除的影响,在此基础上以DEHP和DBP的含量为指标,运用响应面法对分子蒸馏脱除核桃油中塑化剂的工艺条件进行优化。结果表明:分子蒸馏脱除核桃油中塑化剂的最佳工艺条件为蒸馏温度150℃、进料速度250 mL/h、刮膜转速260 r/min,在此条件下核桃油中DEHP含量为0.56 mg/kg,DBP含量为0.05 mg/kg,符合我国对食品中DEHP、DBP的限量要求(DEHP≤1.5 mg/kg,DBP≤0.3 mg/kg)。In order to explore the reasonable process for removing plasticizers from walnut oil by molecular distillation,the effects of distillation temperature,feed rate and scraper speed on the removal of plasticizers DEHP and DBP from walnut oil were studied by single factor experiment.Then with the contents of DEHP and DBP as indexes,the process conditions of molecular distillation to remove plasticizers from walnut oil were optimized using response surface methodology.The results showed that the optimal process conditions for the removal of plasticizers from walnut oil by molecular distillation were obtained as follows:distillation temperature 150℃,feed rate 250 mL/h,and scraper speed 260 r/min.Under these conditions,the contents of DEHP and DBP were 0.56,0.05 mg/kg,respectively,in accordance of the limitation requirements of food in China(DEHP≤1.5 mg/kg,DBP≤0.3 mg/kg).

关 键 词：核桃油 分子蒸馏 塑化剂 DEHP DBP 

分 类 号：TS225.1[轻工技术与工程—粮食、油脂及植物蛋白工程] TS227[轻工技术与工程—食品科学与工程]