本课题以普鲁兰多糖和明胶为主要成膜材料,以甘油为增塑剂制备一种可速溶于水的可食性包装膜。采用单因素和响应面分析法优化普鲁兰多糖-明胶复合膜的最佳组成。结果表明：当普鲁兰多糖添加量为2.00%、明胶添加量为5.00%、甘油添加量为1.40%时为最佳成膜配方,在此条件下,复合膜的抗拉强度为97.21±10.39MPa,断裂延伸率为13.48±1.29%,水蒸气透过率为109.08±11.23g/m2·day,氧气透过率为0.15±0.03mL/m2·day,油脂透过率未检出,600nm下的透光率为90.37±0.53%,溶水时间为20±3s。
通过TG(Thermogravimetry)和DSC(Differential scanning calorimeter)分析得到,复合膜的热性能略低于明胶膜,并且普鲁兰多糖和明胶两种聚合物相互混合后没有发生化学反应；通过透光率、SEM (Scanning electron microscope)和AFM (Atomic Force Microscopy)分析得到,复合膜PG2具有最好的相容性。通过FT-IR (Fourier transform infrared ...
【英文摘要】
A quick dissolvable and edible film was prepared successfully, pullulan and gelatin as main materials and glycerol as plasticizer. The composition of pullulan-gelatin film was optimized by single factor tests and response surface methodology. The optimal conditions were pullulan of2.00%, gelatin of5.00%, and glycerol of1.40%. Under the optimal composition, the tensile strength of film is97.21±10.39MPa, elongation at break is13.48±1.29%, water-vapor permeability is109.08±11.23g/m2·day, oxygen permeability is...
| 
点击下列相关研究机构和相关文献作者，可以直接查到这些机构和作者被《中国知识资源总库》收录的其它文献，使您全面了解该机构和该作者的研究动态和历史。
