Food Science and Biotechnology

Korean Society of Food Science and Technology (한국식품과학회)
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Development of One-step Simultaneous Immunochromatographic Assay for Rapid Analysis of Aflatoxin B1 and Ochratoxin A

  • Shim, Won-Bo (Division of Applied Life Science (BK 21 Program), Graduate School of Gyeongsang National University) ;
  • Kim, Gyeong-Yeol (Division of Applied Life Science (BK 21 Program), Graduate School of Gyeongsang National University) ;
  • Ryu, Hee-Jung (Division of Applied Life Science (BK 21 Program), Graduate School of Gyeongsang National University) ;
  • Nam, Min-Ji (Division of Applied Life Science (BK 21 Program), Graduate School of Gyeongsang National University) ;
  • Chung, Duck-Hwa (Division of Applied Life Science (BK 21 Program), Graduate School of Gyeongsang National University)
  • Published : 2009.06.30
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Abstract

A one-step simultaneous immunchromatographic (OS-ICG) assay using colloidal gold-monoclonal antibody (gold-MAb) conjugates was developed for the rapid multianalysis of aflatoxin B1 (AFB1) and ochratoxin A (OTA) in feed samples. Visual detection limits for AFB1 and OTA were 0.5 and 2.5 ng/mL, respectively, and the results were obtained within 15 min. Matrix interference from the feed extracts was efficiently reduced by appropriate dilution with buffer. Cut-off values of the OS-ICG assay for the feed spiked with AFB1/OTA mixtures (5/5, 10/10, 25/25, 50/55, 100/100 ${\mu}g/kg$) were 10 and 50 ${\mu}g/kg$ for AFB1 and OTA. The comparative analyses of 65 feed samples by OS-ICG, enzyme-linked immunosorbent assay (ELISA), and high performance liquid chromatography (HPLC) showed good agreement. In this study, we confirmed that simultaneous analysis based on immunoassay is possible and it can be used as an on-site multianalysis of AFB1 and OTA in feed, food, and agricultural products.

Keywords

References

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