Production and characterization of antibodies against aflatoxin in laying hens
作者:
Kuo‐Hui Hsu,
FunS. Chu,
期刊:
Food and Agricultural Immunology
(Taylor Available online 1992)
卷期:
Volume 4,
issue 2
页码: 83-91
ISSN:0954-0105
年代: 1992
DOI:10.1080/09540109209354756
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Polyclonal antibodies against aflatoxins were obtained from egg yolks of laying hens immunized with either aflatoxin B1(AFB1) or aflatoxin M1(AFM1) conjugated to bovine serum albumin (BSA). An indirect enzyme‐linked immunosorbent assay (ELISA) involving the use of AFB1‐BSA or AFM1‐BSA conjugate and anti‐chicken IgG‐horseradish peroxidase (HRP) conjugate, was developed for monitoring antibody titers and aflatoxin analysis. Production of the antibody in hens started as early as 10 days after immunization and reached a maximum in 20 days. Competitive indirect ELISA revealed that the antibodies were most specific for AFB1. They were cross‐reactive with other aflatoxins in the following order: B1(100%)>G1(22–28%)>B2(6–16%)>M1(3–9%)>G2(1–4%). Anti‐AFM1‐BSA antibodies showed a similar pattern of cross‐reaction to the anti‐AFB1‐BSA antibodies when AFB1‐BSA was coated to the ELISA plate. The specificity of anti‐AFM1‐BSA to AFM1was demonstrated when AFM1‐BSA was coated to the ELISA plate. Cross‐reactivity with different aflatoxins was in the following order: M1(531%)>B1(100%)>G2(41%)>G1(19%)>B2(3%). The sensitivity for AFB1analysis in the indirect ELISA was 0.05–5 ng AFB1/assay.
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