期刊论文

中文

食品与机械

1003-5788

2015

31

6

11-16

10.13652/j.issn.1003-5788.2015.06.003

国家自然科学基金青年项目（编号：31401658） 湖南省教学厅优秀青年项目（编号：13B048）

本校为第一机构

研究普鲁兰及普鲁兰-聚乙二醇可食用成膜溶液的干燥动力学。结果表明:所有样品在干燥过程中分为加速、降速和平衡3个阶段。纯普鲁兰样品干燥过程符合Wang and singh模型,普鲁兰-聚乙二醇复合膜液则符合Modified Henderson and pabis模型。当干燥温度由40 ℃升高到70 ℃,普鲁兰膜液的有效水分扩散系数从0.019 6×10~(-11) m/s~2增至0.255 7×10~(-11) m/s~2,而普鲁兰-聚乙二醇复合样品从2.400×10~(-11) m/s~2增至11.388×10~(-11) m/s~2。可见随着干燥温度的升高,膜液的有效水分扩散系数值也随之变大;并且在相同干燥温度下,普鲁兰膜液的有效水分扩散系数值比普鲁兰-聚乙二醇复合样品要低。通过A...

The drying kinetics of pullulan and pullulan-PEG film forming solutions were investigated.The results were as followed：the drying curves of pullulan-based films were divided into three stages：the rising rate,the falling rate,and the constant rate period;four mathematical models were fitted to the experimental data;among the drying models considered,the Wang and singh model was found to satisfactorily describe the drying kinetics of pullulan solutions.However,Modified Page equation-II model was found to satisfactorily describe the drying kinet...