Abstract:
【Objective】 To evaluate the adaptability of different rapid detection kits in detecting carbofuran residues in apples, improve the sensitivity and accuracy of the methods and ensure the efficiency and accuracy of selective check in apple products.
【Methods】 In this study, apples from six local markets in Aksu were taken as test samples, and the liquid chromatography of industry standard NY/T 761-2008 Part 3 was used as reference method.Three rapid detection kits were selected respectively, and their adaptability for rapid detection was evaluated according to
Technical Specifications for Evaluation of Rapid Detection Methods of Food.
【Results】 None of carbofuran residues in all samples was detected by the reference method and rapid detection kits.Results in different spiked levels showed that positive color could be observed above 0.01 mg/kg, which was lower than the maximum residue limits for pesticides in food listed in GB/T 2763-2019.All rapid detection kits displayed that the sensitivity was 100%, and specificity for carbofuran residues in apples was 50%.Compared with instructions, false negative rate was 0, false positive rates were 50% and relative accuracy was 90%.
【Conclusion】 The rapid detection kits can be used in fast testing and screening of carbofuran residues in apples.