乳化玉米油的制备及其保润性能

Preparation of Emulsified M aize Oil and its M oisture Retentivity

采用乳剂技术制备高浓度玉米油保润剂,并通过星点设计-效应面优化法优化其制备工艺。以烟丝干基含水率为指标,采用动态水分吸附系统评价其保润性能,并进行卷烟感官评价。结果表明:①星点设计法优化玉米油保润剂的处方工艺,方法简便且实验次数少;采用三维效应面进行数据处理与非线性拟合,效果良好。②玉米油烟草保润剂制备工艺简单,制得的保润剂黏度为(35.2±1.2)mPa·s、粒径为1.16μm。③与对照丙二醇相比,添加40%玉米油保润剂的膨胀烟丝在干燥环境中前2 h的失水速率明显降低。④添加玉米油保润剂卷烟样品的感官评吸结果好于丙二醇。

High concentration maize oil humectant was prepared with emulsion technology, and the technical conditions were optimized with central composite design-response surface methodology. The moisture content was expressed on the basis of bone-dry tobacco, the moisture rententivity of the said humectant was assessed with a dynamic vapored sorption system, and the sensory quality of cigarette was evaluated. The results showed that ： 1） It was simple and with less experiments to optimize the formulation of maize oil humectants by central composite design. Satisfactory results were achievable by using 3D response surface in data processing and non-linear fitting. 2） The preparation technique of maize oil humectant was simple, the obtained humectant was （35.2±1.2） mPa·s in viscosity and 1.16 μm in particle size. 3） In the first two hours, the dehydrating velocity of expanded cut tobacco added with 40% maize oil humectant was evidently lower comparing with propylene glycol in a dry atmosphere. 4） The smoking quality of cigarettes added with maize oil humectant was better than those added with propylene glycol.