食品科学 ›› 2007, Vol. 28 ›› Issue (5): 305-308.

• 营养卫生 • 上一篇    下一篇

牛乳中主要过敏原组分的分离纯化及鉴定

 毛露甜, 向军俭, 张在军   

  1. 暨南大学分子免疫学与抗体工程研究中心; 暨南大学分子免疫学与抗体工程研究中心 广东广州510632惠州学院生命科学系; 广东惠州516007; 广东广州510632;
  • 出版日期:2007-05-15 发布日期:2011-12-31

Identification and Isolation of Major Allergens in Milk

 MAO  Lu-Tian, XIANG  Jun-Jian, ZHANG  Zai-Jun   

  1. 1.Molecular Immunology and Antibody Engineering Center,Jinan University,Guangzhou 510632,China; 2.Department of Life Science,College of Huizhou,Huizhou 516007,China
  • Online:2007-05-15 Published:2011-12-31

摘要: 目的:分离纯化并鉴定牛乳中引起过敏反应的主要致敏组分。方法:采用聚丙烯酰胺凝胶电泳(SDS- PAGE)分析了脱脂乳和乳清的蛋白组分,用饱和硫酸铵分段盐析-DEAE离子交换柱层析纯化过敏原蛋白,脱脂乳和乳清蛋白皮下注射Balb/c小鼠获得高效价特异性IgE抗血清用于免疫印迹分析。结果:免疫印迹分析显示β-乳球蛋白(β-Lg)是引起牛乳过敏的主要过敏原,建立了牛乳过敏小鼠模型。结论:明确了牛乳过敏的主要过敏组分,对牛乳过敏症的诊断治疗以及无过敏原牛乳的制备提供了实验依据。

关键词: 牛乳, 食物过敏原, 免疫印迹, DEAE离子交换层析

Abstract: Object:To isolate and identify the main allergens in the milk.Method:The protein components in skimmed milk and whey were analyzed by SDS-PAGE.The allergen proteins were purified by the combined of techniques saturated ammonium sulfate salimetry and DEAE iron-exchanged chromatography.The Balb/c mice were immumed with the extracts of milk,then the high titrations of specific IgE anti-serum were isolated for immunoblotting analysis.Results:Immunoblotting analysis indicated thatβ-Lg is the major component leading to cow milk allergy.Allergic mice models were established successfully.Conclusion: The major allergic components in milk were identified in this study,paving an experiment basis for the diagnoses and therapy of milk allergey as well as the preparation of non-allergen milk.

Key words: milk, food allergen, immunoblotting, DEAE iron-exchanged chromatography