Quantum dot-based lateral flow immunoassay for detection of chloramphenicol in milk

Anal Bioanal Chem. 2013 May;405(14):4997-5000. doi: 10.1007/s00216-013-6876-3. Epub 2013 Mar 14.

Abstract

A novel rapid (20 min) fluorescent lateral flow test for chloramphenicol (CAP) detection in milk was developed. The chosen format is a binding-inhibition assay. Water-soluble quantum dots with an emission peak at 625 nm were applied as a label. Milk samples were diluted by 20 % with phosphate buffer to eliminate the matrix effect. The result of the assay could be seen by eye under UV light excitation or registered by a portable power-dependent photometer. The limit of CAP detection by the second approach is 0.2 ng/mL, and the limit of quantitation is 0.3 ng/mL.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Cattle
  • Chloramphenicol / administration & dosage*
  • Equipment Design
  • Equipment Failure Analysis
  • Flow Injection Analysis / instrumentation*
  • Fluoroimmunoassay / instrumentation*
  • Food Analysis / instrumentation*
  • Food Contamination / analysis*
  • Milk / chemistry*
  • Quantum Dots*
  • Reproducibility of Results
  • Sensitivity and Specificity

Substances

  • Chloramphenicol