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

Accurate and rapid extraction of pesticide residues in fruits is crucial for timely food safety monitoring. However, conventional extraction methods remain labor-intensive and time-consuming, often requiring hours for sample preparation. Here, we present a porous hydrogel microneedle (HMN) patch integrated with an automated insertion applicator as a highly efficient platform for the rapid extraction of peach juice for imidacloprid residue detection. The HMN patch, composed of polymethyl vinyl...