摘要
[Objective] A study on separation process of lysozyme, ovotransferrin and ovalbumin from egg white. [Method] The proteins were separated by ammonium sul-fates and ion-exchange chromatography. Purity of the proteins was assayed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis （SDS-PAGE）. [Result] The results showed that the proteins were electrophoresis-pure. The specific activity of lysozyme was increased from 144.13 to 2 235 U/mg, and purification factor was 15-fold. Lysozyme recovery rate was estimated to be 15.76%. Bacteriostasis rate of ovotransferrin was 48.84%. [Conclusion] The procedure for separating lysozyme, ovotransferrin and ovalbumin from egg white was simple, fast, low-cost and suitable for industrilization.
[目的]研究鸡蛋清中溶菌酶、卵转铁蛋白和卵白蛋白的分离提取工艺。[方法]采用硫酸铵沉淀和离子交换层析分离三种蛋白质,并用聚丙烯酰胺凝胶电泳(SDS-PAGE)检测其纯度。[结果]层析纯化后SDS-PAGE检测其纯度达到电泳纯,溶菌酶的比活由144.13 U/mg提高到2 235 U/mg,纯化倍数达15倍,回收率为15.76%;卵转铁蛋白抑菌率为48.84%。[结论]该方法分离溶菌酶、卵转铁蛋白和卵白蛋白,工艺路线简单、快捷、成本低,适用于工业生产。
基金
Supported by Lishui Science and Technology Bureau Company-College Collaboration Program(20080410)~~
