摘要
利用双螺杆挤压技术制备淀粉阿魏酸酯,研究其流变性、剪切稀化及触变性变化规律,并建立流变模型。结果表明,淀粉阿魏酸酯糊化后,流体符合幂函数Ostwald-de Waele模型,呈假塑性流体特征;表观黏度增加,流动性降低,具有剪切稀化现象;触变性随样品浓度的增加而增大。
The starch ferulic acid polymer were prepared by twin-screw extrusion technology,and changes of were studied,including the rheological properties,shear thinning and thixotropy.The results showed that after gelatinization of starch ferulic acid polymer,the paste conformed to the power function Ostwald de Waele model,showing the characteristics of pseudoplastic fluid.With the apparent viscosity increased with increasing of fluidity,the paste obeyed the shear thinning.The thixotropy increased with the increase of sample concentration.
作者
聂卉
李玉玲
王海燕
NIE Hui;LI Yu-ling;WANG Hai-yan(Zhengzhou University of Technology,Zhengzhou,Henan 450044,China)
出处
《食品与机械》
北大核心
2020年第5期25-29,共5页
Food and Machinery
基金
河南省高等学校重点科研项目计划(编号:20B550010,18A150050)
郑州工程技术学院科技创新团队培育基金(编号:CXTD2018k3)。
关键词
双螺杆挤压
淀粉阿魏酸酯
流变性
剪切稀化
触变性
twin-screw extrusion
starch ferulic acid polymer
rheological properties
shear thinning
thixotropy
