食品科学 ›› 2011, Vol. 32 ›› Issue (7 ): 16-20.doi: 10.7506/spkx1002-6630-201107004

• 基础研究 • 上一篇    下一篇

白果过敏原蛋白及其过敏原性研究

李莹莹1,吴彩娥1,*,杨剑婷2,范龚健1   

  1. 1.南京林业大学森林资源与环境学院 2.安徽科技学院食品药品学院
  • 收稿日期:2010-06-30 修回日期:2011-02-24 出版日期:2011-04-15 发布日期:2011-03-30
  • 通讯作者: 吴彩娥 E-mail:sxwucaie@163.com
  • 基金资助:
    教育部博士点基金项目(200802980004)

Identification and Allergenicity of Allergic Proteins in Ginkgo Seeds

LI Ying-ying1,WU Cai-e1,*, YANG Jian-ting2,FAN Gong-jian1   

  1. 1.College of Forest Resources and Environment, Nanjing Forestry University, Nanjing 210037, China;
    2.College of Food and Drug, Anhui Science and Technology University, Fengyang 233100, China
  • Received:2010-06-30 Revised:2011-02-24 Online:2011-04-15 Published:2011-03-30
  • Contact: WU Cai-e E-mail:sxwucaie@163.com

摘要: 对白果的主要过敏蛋白进行鉴定,并对其过敏原性进行分析。以SDS-PAGE和Western-Blotting分析鉴定白果蛋白提取液中的蛋白质组分和过敏蛋白,通过间接ELISA法检测过敏小鼠血清中sIgE的效价。白果的蛋白质条带主要有13条,其中以21kD和32kD含量最多。Western-Blotting分析结果表明,白果蛋白中存在3条过敏原蛋白,分子质量分别为21、32、36kD。当酶标二抗稀释度为1:1000,白果蛋白包被质量浓度为50μg/mL,间接ELISA测得过敏小鼠血清中sIgE的效价为1:6400。对白果蛋白进行分析鉴定,明确了白果中存在的过敏原蛋白。

关键词: 间接ELISA, 白果, 过敏原, SDS-PAGE, Western-Blotting

Abstract: SDS-PAGE and Western-Blotting were used to identify the protein composition and allergic proteins of ginkgo seed extract, respectively. A total of 13 bands were observed in the SDS-PAGE pattern, and the fractions of 21 kD and 32 kD exhibited the highest content. Western-Blotting analysis indicated that ginkgo seeds had 3 allergic proteins, whose molecular weights were 21, 32 kD and 36 kD, respectively. When the enzyme secondary antibody concentration was 1:1000 and the ginkgo protein coating concentration was 50μg/mL, the serum IgE titer of mice allergic to ginkgo seeds was detected to be 1:6400 by indirect ELISA.

Key words: ginkgo seed, allergic protein, SDS-PAGE, Western-Blotting, indirect ELISA

中图分类号: