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[Analytical method for methoprene in foods using HPLC]
Isao Saito1, Eiji Ueno, Harumi Oshima
1Aichi Prefectural Institute of Public Health: 7-6, Nagare, Tsuji-machi, Kita-ku, Nagoya 462-8576, Japan.
This study presents a validated high-performance liquid chromatography (HPLC) method for determining methoprene in food. The method offers reliable quantification with good recovery rates, suitable for routine food analysis.
Area of Science:
- Analytical Chemistry
- Food Science
Context:
- Accurate quantification of methoprene is crucial for food safety and regulatory compliance.
- Existing analytical methods may have limitations in sensitivity or scope.
Purpose:
- To develop and validate a robust high-performance liquid chromatography (HPLC) method for methoprene determination in food matrices.
- To assess the method's recovery, repeatability, and reproducibility across multiple laboratories.
Summary:
- A sample extraction using acetonitrile and salting-out procedure was employed.
- Florisil column chromatography was used for cleanup, followed by HPLC analysis.
- The method demonstrated good recovery (74.6-84.6%) and acceptable precision (RSD 2.3-23.6%) with low detection limits (0.001-0.02 µg/g).
Impact:
- Provides a reliable analytical tool for methoprene monitoring in food products.
- The validated method surpasses the detection limits of the Notified Analytical Method, enhancing food safety surveillance.
- Facilitates consistent and accurate methoprene residue analysis in diverse food samples.
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