绿鳍马面鲀鱼皮明胶的制备工艺研究

Study on the Preparation of Gelatin from Navodon septentrionalis Fish Skin

[目的]利用绿鳍马面鲀鱼皮为原料制备明胶,探究鱼皮明胶制备的影响因素,获取最优工艺条件。[方法]通过单因素试验研究NaOH处理时间、乙酸处理时间、提取温度、提取时间对明胶得率的影响。在单因素试验的基础上进行正交试验,筛选绿鳍马面鲀鱼皮明胶制备最优工艺条件。[结果]在优化的试验条件下,得出绿鳍马面鲀鱼皮明胶制备工艺的最优组合为NaOH处理时间1.0 h,乙酸处理时间3 h,提取温度80℃,提取时间4 h,绿鳍马面鲀鱼皮明胶的得率达15.74%。[结论]该研究可为鱼皮等下脚料的开发利用提供科学依据。

[Objective]To prepare gelatin from fish skin of Navodon septentrionalis,and explore the factors affecting the preparation of fish skin gelatin and obtain the optimal process conditions.[Method]The factors such as processing time of fish skin by NaOH,processing time of fish skin by acetic acid,extracting temperature,extracting time were researched by single factor experiment and the optimum conditions were obtained by the orthogonal experiments.[Result]The optimal conditions for gelatin preparation were as following:processing time by NaOH 1.0 h,processing time by acetic acid 3 h,extracting temperature 80℃,extracting time 4 h.Under the optimum conditions,the yield of gelatin was up to 15.74%.[Conclusion]The research can provide scientific basis for the development and utilization of fish skin and other leftovers.