食品科学

• 成分分析 • 上一篇    下一篇

牛初乳中免疫球蛋白G双抗夹心ELISA检测方法的建立

刘 金,王丽威,岳喜庆   

  1. 1.沈阳农业大学食品学院,辽宁 沈阳 110866;2.辽宁工程技术大学理学院,辽宁 阜新 123000
  • 出版日期:2016-07-25 发布日期:2016-07-26
  • 通讯作者: 岳喜庆
  • 基金资助:

    2011年度国家星火计划项目(2011GA650001)

Development of Double Antibody Sandwich ELISA for Detection of Bovine Colostrum Immunoglobulin G

LIU Jin, WANG Liwei, YUE Xiqing   

  1. 1. College of Food Science, Shenyang Agricultural University, Shenyang 110866, China;
    2. College of Science, Liaoning Technology University, Fuxin 123000, China
  • Online:2016-07-25 Published:2016-07-26
  • Contact: YUE Xiqing

摘要:

将牛免疫球蛋白G(immunoglobulin G,IgG)作为免疫原免疫BALB/c小鼠,通过细胞融合、筛选获得分泌抗牛IgG单克隆抗体的细胞株。制备小鼠腹水抗体,进一步纯化获得抗牛IgG单克隆抗体。建立双抗夹心酶联免疫吸附法检测牛初乳中IgG质量浓度,该方法在7.8~1 000 ng/mL范围内有良好的线性关系,最低检出限为7.06 ng/mL,批内变异系数为4.52%,批间变异系数为4.94%,回收率为91.85%~102.45%。此法操作简便、准确度高、稳定性好,可用于实际牛初乳样品的快速检测。

关键词: 牛初乳, 免疫球蛋白G, 单克隆抗体, 双抗夹心酶联免疫吸附法

Abstract:

The hybridoma cells secreting monoclonal antibody (McAb) against bovine colostrum immunoglobulin G (IgG)
were developed by cell fusion technology after immunization of BALB/c mice with bovine IgG. McAbs were obtained by
purification of mouse ascites. A double antibody sandwich enzyme-linked immunosorbent assay (ELISA) technique was
established for the detection of bovine colostrum IgG. The linear range was 7.8–1 000 ng/mL and the limit of detection (LOD)
was 7.06 ng/mL. The intra-assay and inter-assay coefficient of variations were 4.52% and 4.94%, respectively. The recovery
rate was 91.85%–102.45%. The ELISA method can provide a simple, accurate and stabile approach for the rapid detection
of bovine colostrum IgG.

Key words: bovine colostrum, immunoglobulin G (IgG), monoclonal antibody, sandwich ELISA

中图分类号: