兔皮、鸡皮和三文鱼皮明胶成膜性的对比  

Comparison of Film-forming Properties of Rabbit Skin,Chicken Skin and Salmon Skin

作　　者：吕妍霄 薛伟[1] 

机构地区：[1]东北林业大学工程技术学院,黑龙江哈尔滨150040

出　　处：《食品研究与开发》2018年第3期8-13,共6页Food Research and Development

基　　金：国家自然科学基金项目(31300474)

摘　　要：明胶作为可食性和可降解包装的主要材料,由于近年来食品安全问题及个人宗教信仰等,使得传统明胶不能大量应用,现亟需新型明胶材料的研究开发。为寻求最合适的明胶成膜材料,通过对阻隔性能、水溶性、力学性能、红外光谱分析和热稳定性分析来测定鸡皮、兔皮和三文鱼皮明胶的成膜性。最终表明:兔皮明胶膜的水蒸气透过率、水溶性、透氧率在三者中最低,也能表现出良好的机械性能,鸡皮明胶膜的热稳定性较好,但与兔皮明胶膜没有显著性差异。通过红外光谱图表明兔皮明胶膜酰胺A带的吸收峰最低,说明兔皮明胶中的羟脯氨酸和脯氨酸含量较多,酰胺Ⅰ分离子峰高斯拟合后发现兔皮明胶膜的三螺旋结构含量较多,同时甘油特征峰表示出甘油与兔皮明胶膜发生更多的交联。因此,兔皮明胶膜的各项性能优于鱼皮和鸡皮明胶膜,可以作为新型的明胶膜材料。Gelatin as the main material of edible and degradable packaging, due to the recent food safety and personal religious beliefs, so that the traditional gelatin can not be a large number of applications, is the urgent need for new gelatin material research and development. It is urgent to study and develop new gelatin materials. In order to find the most suitable gelatin film, the film formation of chicken skin, rabbit skin and salmon gelatin was determined by blocking property, water solubility, mechanical property, infrared spectroscopy and thermal stability analysis. The results showed that the water vapor permeability, water solubility and oxygen permeability of the film made of rabbit skin was the lowest and it also showed good mechanical properties. The thermal stabil -ity of the chicken gelatin film was better. There was no significant difference with the rabbit gelatin membrane. The results showed that the absorption peak of amide A band of rabbit gelatin was the lowest, which indicated that the content of hydroxyproline and proline in rabbit gelatin gelatin was higher than that of amide I. The con-tent of the three-helix structure was more, and the glycerol-specific peak indicated that the glycerol had more crosslinking with the rabbit gelatin film. Therefore, the performance of rabbit skin film was better than the skin and chicken skin gelatin film, could be used as a new gelatin membrane material.

关 键 词：兔皮 三文鱼皮 可食性包装 鸡皮明胶膜 

分 类 号：TS254.9[轻工技术与工程—水产品加工及贮藏工程]