四种非肌肉蛋白对冷冻竹荚鱼鱼糜凝胶能力的影响研究

探讨了四种常用的非肌肉蛋白对竹荚鱼鱼糜凝胶特性的影响,对不同鱼糜加热过程中凝胶强度、持水力、白度、SDS-PAGE电泳图谱以及微观结构的变化进行比较。实验结果表明,血浆蛋白对冷冻竹荚鱼的蛋白酶有很强的抑制效果,最佳添加量为1%。卵清蛋白及乳清蛋白在5%高浓度时其凝胶增强效果与1%的血浆蛋白添加效果近似,大豆蛋白的效果较差,四种蛋白对鱼糜白度、持水力影响不大。非肌肉蛋白应用于竹荚鱼鱼糜的品质改善中,对凝胶劣化有一定的抑制,这对竹荚鱼鱼糜的品质控制具有一定意义。

Study on effect of four non-muscle protein on surimi gelation from frozen horse mackerel

To improve the surimi gel from frozen horse mackerel,the addition of some protein additives(egg white protein,pork plasma protein,soybean protein and whey protein concentrate) was evaluated by texture analysis,water-holding ability,whiteness,SDS-PAGE,scanning electron microscopic observation.The results showed addition of pork plasma protein reduced the extent of gel weakening caused by the proteases.The effect of 5% addition of EW and WPC on the gel improvement was equal to 1% PPP and the effect of soybean protein was weak.The effects of proteins on water-holding ability and whiteness were weak.The above results showed that these four additives were good quality-enhancing compounds for frozen horse mackerel surimi,which could be used in practical applications.