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Published on: July 30, 2017
Development of biodegradable starch-based lambda-cyhalothrin microcapsules for sustainable long-term pest control and
Liang Li1, Long Chen2, Qian Du1
1Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China.
Carbohydrate Polymers
|September 5, 2025
Summary
This study developed novel microcapsules using degradable starch nanocrystals for safer, sustained pesticide release. These eco-friendly formulations enhance pest control while reducing environmental toxicity.
Area of Science:
- Materials Science
- Agricultural Chemistry
- Environmental Science
Background:
- Traditional pesticides cause environmental pollution and health risks due to inefficiency.
- Pesticide microcapsules offer a sustainable alternative for controlled release and reduced environmental impact.
Purpose of the Study:
- To fabricate environmentally friendly pesticide microcapsules using modified starch nanocrystals.
- To evaluate the efficacy and safety of these novel microcapsules for pest control.
Main Methods:
- Degradable starch nanocrystals (SNCs) were produced via acid hydrolysis.
- Octenyl succinic anhydride-modified SNCs (O-SNCs) were synthesized and used for Pickering emulsion of lambda-cyhalothrin (LC).
- Microcapsules were formed through interfacial polymerization, with size controlled by O-SNCs content.
Main Results:
- Microcapsules demonstrated high encapsulation efficiency and storage stability.
- The O-SNCs-based microcapsules provided superior sustained pest control.
- A significant reduction in acute toxicity to zebrafish and earthworms was observed.
Conclusions:
- Modified starch nanocrystals are effective stabilizers for pesticide microcapsules.
- This formulation offers a sustainable and safer approach to pest management.
- The study provides a foundation for developing advanced, eco-friendly pesticide delivery systems.
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