Qualitative and quantitative detection of aflatoxin B1 in poultry sera by enzyme-linked immunosorbent assay.
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Date
1996-06
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Abstract
An indirect competitive inhibition type enzyme-linked immunosorbent assay
(ELISA) has been developed for the detection of aflatoxin B1, in poultry sera. Preincubation of
aflatoxin B1, samples with the antibody prior to competition yielded better results in terms of
higher sensitivity. After competition, amount of antibody bound to solid phase was measured by
incubation with anti-rabbit immunoglobulins coupled with horse raddish peroxidase. Intensity of
colour decreased as the amount of free aflatoxin B1, increased. Final detection of aflatoxin B1, was
made by (i) visual comparison with standard aflatoxin B1 using dot-ELISA (qualitative) and (ii)
by plate-ELISA, where optical density was measured at 492 nm (quantitative). Plate-ELISA was
more sensitive than dot-ELISA, with sensitivity limits being 100 fg and 1 pg per 10 μl, respectively.
However, due to ease and speed of performance, dot-ELISA has greater potential as a test for
the diagnosis of mycotoxicosis at the field level.
Description
Keywords
Aflatoxins, ELISA, anti-aflatoxin antibodies, poultry sera
Citation
Sekhon C P S, Kapur Jyotika, Sodhi S S, Jand S K. Qualitative and quantitative detection of aflatoxin B1 in poultry sera by enzyme-linked immunosorbent assay. Journal of Biosciences. 1996 Jun; 21(4): 471-476.