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Updated: Jun 30, 2026
10:54
Extraction of Plant-based Capsules for Microencapsulation Applications
Published on: November 9, 2016
A pH-responsive vanillin-Schiff base microcapsule for controlled release of pyraclostrobin
Wenneng Wu1, Chang Yan1, Peng Geng1
1School of Food Science and Engineering, Guiyang University, Guiyang, China.
Pest Management Science
|June 29, 2026
Summary
Environmentally responsive microcapsules offer sustainable pest control. These pH-responsive pyraclostrobin-loaded polyurethane microcapsules show enhanced antifungal efficacy and reduced toxicity, benefiting agriculture.
Area of Science:
- Materials Science
- Agricultural Chemistry
- Environmental Science
Background:
- Environmentally responsive microcapsules are key for sustainable pest management, improving efficacy and environmental compatibility.
- Pyraclostrobin (Pyr)-loaded microcapsules (Pyr@PU) with a polyurethane shell were fabricated using interfacial polymerization for pH-responsive pesticide delivery.
Purpose of the Study:
- To develop and characterize pH-responsive pyraclostrobin-loaded polyurethane microcapsules (Pyr@PU).
- To evaluate the controlled release, stability, bioactivity, and biosafety of the fabricated microcapsules for agricultural applications.
Main Methods:
- Fabrication of Pyr@PU microcapsules via interfacial polymerization.
- Characterization of loading capacity, encapsulation efficiency, and in vitro pH-responsive release.
- Assessment of photostability, leaf wettability, rainfastness, antifungal activity, and biosafety (zebrafish toxicity, seed germination).
Main Results:
- Pyr@PU microcapsules demonstrated high loading capacity (80.89%) and encapsulation efficiency (96.17%).
- Significant pH-responsive release was observed, with 82.81% Pyr release at pH 4.0 after 144 hours.
- Microcapsules showed excellent photostability, leaf adhesion, rainfastness, potent antifungal effects against kiwifruit and rice pathogens, and reduced zebrafish toxicity.
Conclusions:
- The pH-responsive Pyr@PU microcapsules offer superior UV resistance, leaf adhesion, rainfastness, and antifungal efficacy.
- This intelligent controlled-release platform provides enhanced pesticide efficacy and environmental compatibility for sustainable agriculture.
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