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High-Porosity Hydrogel Microneedles for Rapid and Efficient Extraction of Imidacloprid Residues in Peach Fruits

  • 0Laboratory of Agricultural Information Intelligent Sensing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China.
Foods (basel, Switzerland) +

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October 16, 2025

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October 16, 2025

View abstract on PubMed

Summary

This summary is machine-generated.

A novel hydrogel microneedle (HMN) patch rapidly extracts peach juice for pesticide residue analysis. This efficient method simplifies food safety monitoring, offering a faster alternative to traditional techniques.

Area Of Science

  • Materials Science
  • Analytical Chemistry
  • Food Science

Background

  • Accurate pesticide residue detection in fruits is vital for food safety.
  • Conventional extraction methods are time-consuming and labor-intensive.

Purpose Of The Study

  • To develop a highly efficient platform for rapid extraction of peach juice for pesticide residue analysis.
  • To integrate a hydrogel microneedle (HMN) patch with an automated applicator for enhanced sample preparation.

Main Methods

  • Fabrication of a porous hydrogel microneedle (HMN) patch using polymethyl vinyl ether/maleic anhydride (PMVE/MA) polymer.
  • Optimization of porogen content (3% NaHCO3) for high porosity and water absorption.
  • Integration of the HMN patch with an automated insertion applicator.

Main Results

  • The optimized HMN patch demonstrated ultrahigh extraction efficiency with a 40-fold water absorption capacity.
  • 0.6% (w/w) peach solids were extracted within 5 minutes.
  • Extracted juice was compatible with High-Performance Liquid Chromatography (HPLC) and lateral flow assays.

Conclusions

  • The HMN platform provides a scalable, efficient, and user-friendly solution for high-throughput pesticide extraction.
  • Automated applicator integration enhances consistency and facilitates on-site monitoring.
  • This technology offers a practical pathway for field-deployable food safety monitoring.

Keywords: