Nano-Micro Core–Shell Fibers for Efficient Pest Trapping,Nano Letters

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Nano-Micro Core–Shell Fibers for Efficient Pest Trapping
Nano Letters ( IF 9.6 ) Pub Date : 2023-12-04 , DOI: 10.1021/acs.nanolett.3c03817
Wenjie Shangguan _{1,

2} , Hongliang Xu ₂ , Wanlong Ding ₃ , Huiping Chen ₁ , Xiangdong Mei ₁ , Pengyue Zhao ₁ , Chong Cao ₁ , Qiliang Huang ₁ , Lidong Cao ₁

Affiliation

Insect sex pheromones as an alternative to chemical pesticides hold promising prospects in pest control. However, their burst release and duration need to be optimized. Herein, pheromone-loaded core–shell fibers composed of degradable polycaprolactone and polyhydroxybutyrate were prepared by coaxial electrospinning. The results showed that this core–shell fiber had good hydrophobic performance and thermal stability, and the light transmittance in the ultraviolet band was only below 40%, which provided protection to pheromones. The core–shell structure alleviated the burst release of pheromone in the fiber and extended the release time to about 133 days. In the field, the pheromone-loaded core–shell fibers showed the same continuous and efficient trapping of Spodoptera litura as the commercial carriers. More importantly, the electrospun fibers combined with biomaterials had a degradability unmatched by commercial carriers. The structure design strategy provides ideas for the innovative design of pheromone carriers and is a potential tool for the management of agricultural pests.

中文翻译：

纳米微核壳纤维可有效捕获害虫

昆虫性信息素作为化学农药的替代品在害虫防治方面具有广阔的前景。然而，它们的突发释放和持续时间需要优化。本文通过同轴静电纺丝制备了由可降解聚己内酯和聚羟基丁酸酯组成的负载信息素的核壳纤维。结果表明，这种核壳纤维具有良好的疏水性能和热稳定性，紫外波段的透光率仅在40%以下，对信息素提供了保护。核壳结构缓解了纤维中信息素的爆发释放，并将释放时间延长至约133天。在现场，负载信息素的核壳纤维表现出与商业载体相同的连续有效的斜纹夜蛾捕获能力。更重要的是，与生物材料结合的电纺纤维具有商业载体无法比拟的可降解性。该结构设计策略为信息素载体的创新设计提供了思路，是农业害虫治理的潜在工具。

更新日期：2023-12-04

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