斑点叉尾鮰鱼皮是加工生产中的副产物，其胶原含量丰富，附加值较高。本课题利用酶解法和水提法制备两种鱼皮提取液，分别处理 A、B 两组鸡蛋，于30℃下贮存，经分析，A 组酶解物的主要成分三螺旋结构完整，为胶原蛋白；B 组水提物中的主要成分三螺旋结构已破坏，保留一些β-转角结构和β-折叠结构，为胶原水解产物。通过定期检测鸡蛋的感官品质、失重率、相对密度、蛋黄指数和哈夫单位等指标判断其保鲜效果，结果表明，A、B 两组保鲜效果显著优于空白组，且分别延长鸡蛋保质期4周和6周。%Channel Catfish skin,with large amount of collagen and high added value,is a main by-product of Channel Catfish processing.This dissertation studies on fish skin coating solution by enzymatic extraction and water extraction and it was used for coating processing egg of group A and B.During the storage period under room temperature 30 ℃.The a-nalysis shows that the component of group A coating solution contained complete triple helix configuration that was colla-gen;triple helix configuration of group B coating solution had been destroyed while the β-turn structure and β-sheet -collagen hydrolysate were kept.The preservation effect of both groups was significantly better than that of the control group,after testing the sensory quality,weight loss ratio,relative density,yolk index and Haugh unit of coating eggs;and eggs of group B better than group A.Compared with control group,the shelf life of eggs in group A and group B was extended by 4 weeks and 6 weeks respectively.
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