Journal of Food Science and Biotechnology
Abstract
[Objective ] This study aims to establish a magnetic bead enzyme-linked immunosorbent assay (MELISA ) method for olaquindox (OLA ) based on immunomagnetic beads.[Method ] First,olaquindox-hapten conjugated with horseradish peroxidase (OLA-HS-HRP ) and immunomagnetic beads were synthesized.Then,the conjugated immunomagnetic beads and OLA-HS-HRP were used to screen and optimize the reaction conditions of MELISA.[Result ] The optimal working dilution factors for the immunomagnetic beads and OLA-HS-HRP were 100 times and 8 000 times,respectively,with the antibody dilution buffer being PBS solution (0.010 mol/L,pH 7.0) containing methanol at a volume fraction of 5%.Under the optimized conditions,the established standard equation was y=13.593ln x+17.173 (R2=0.994 3),with IC 10,IC 20,IC 50,and IC 80 values of 0.59,1.23,11.19,and 101.70 ng/mL,respectively.The recovery rate of this method was 93.17%~106.83%,and the coefficient of variation (CV) was < 7%.[Conclusion ] The MELISA established in this study is highly sensitive and reliable,providing a new method for the detection of OLA residues and offering a theoretical basis and reference for the detection of other small molecule drugs in food safety.
Publication Date
7-15-2025
First Page
149
Last Page
160
DOI
10.12441/spyswjs.20241202001
Recommended Citation
CHEN, Ziyi; SONG, Yanling; SUN, Junjie; LI, Yinlai; ZHAI, Lu; ZHANG, Yaofeng; FENG, Junli; and JIN, Renyao
(2025)
"Establishment and Application of an Immunomagnetic Bead-based MELISA Method for Olaquindox,"
Journal of Food Science and Biotechnology: Vol. 44:
Iss.
7, Article 15.
DOI: 10.12441/spyswjs.20241202001
Available at:
https://spsw.spyswjs.cnjournals.com/journal/vol44/iss7/15
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