Scholarlink

<p>Multilayer polyelectrolyte capsules, fabricated using the Layer-by-Layer (LbL) method, offer a novel approach to nanoencapsulating essential oils (EOs). This encapsulation enhances the EOs persistence and efficiency, facilitating the controlled release of the active compounds. In this study, we developed nanocapsules coated by alternating adsorption of chitosan and sodium alginate to modulate the release of EOs from three Piperaceae species (<i>Piper aduncum</i>, <i>Piper gaudichaudianum</i>, and <i>Piper marginatum</i>). These nanocapsules were designed to manage <i>Drosophila suzukii</i>, a globally significant pest of fruits with thin exocarps and stone fruits. In addition, we investigated their selectivity toward <i>Trichopria anastrephae</i>, the primary parasitoid associated with this pest species. For the three tested EOs, the nanosystems achieved maximum incorporation efficiency ranging from 59.4 to 50.3% (LbL1) and 42.1 to 39.4% (LbL2), with average apparent diameters of 176&#xa0;nm (LbL1) and 173&#xa0;nm (LbL2). The inversion of the surface potential of the nanocapsules was confirmed in the system’s stability region. We found that crude EOs of <i>P. marginatum</i> and EO of<i> P. marginatum</i>-LbL2 via ingestion and topical application were promising, killing 90% of exposed <i>D. suzukii</i> adults. These nanosystems also exhibited ovicidal and oviposition deterrent effects on <i>D. suzukii</i> females, rendering 100% of the eggs nonviable and reducing oviposition by up to 85%. Regarding selectivity for <i>T. anastrephae</i>, adult mortality reached a maximum of 23%, with no interference in parasitism by surviving females. We highlight the potential of chitosan-sodium alginate nanocapsules carrying EOs as promising alternatives to synthetic insecticides or even crude EOs with high volatility, water immiscibility, and rapid degradation.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Enhancing the performance of Piper spp. essential oils by developing chitosan-sodium alginate polyelectrolyte complex against Drosophila suzukii with selectivity for non-target parasitoids

  • 期刊论文

  • 发表日期：

    2025年6月4日

查看全文
  • Michele Trombin de Souza,
  • Mireli Trombin de Souza,
  • Renan Reisdörfer Schorr,
  • Rilton Alves de Freitas,
  • Francisco de Assis Marques,
  • Diones Krinski,
  • Beatriz Helena Lameiro de Noronha Sales Maia,
  • Maria Aparecida Cassilha Zawadneak,
  • Leandro do Prado Ribeiro,
  • Júlia Peralta Ferreira,
  • Daniel Bernardi

摘要

Multilayer polyelectrolyte capsules, fabricated using the Layer-by-Layer (LbL) method, offer a novel approach to nanoencapsulating essential oils (EOs). This encapsulation enhances the EOs persistence and efficiency, facilitating the controlled release of the active compounds. In this study, we developed nanocapsules coated by alternating adsorption of chitosan and sodium alginate to modulate the release of EOs from three Piperaceae species (Piper aduncum, Piper gaudichaudianum, and Piper marginatum). These nanocapsules were designed to manage Drosophila suzukii, a globally significant pest of fruits with thin exocarps and stone fruits. In addition, we investigated their selectivity toward Trichopria anastrephae, the primary parasitoid associated with this pest species. For the three tested EOs, the nanosystems achieved maximum incorporation efficiency ranging from 59.4 to 50.3% (LbL1) and 42.1 to 39.4% (LbL2), with average apparent diameters of 176 nm (LbL1) and 173 nm (LbL2). The inversion of the surface potential of the nanocapsules was confirmed in the system’s stability region. We found that crude EOs of P. marginatum and EO of P. marginatum-LbL2 via ingestion and topical application were promising, killing 90% of exposed D. suzukii adults. These nanosystems also exhibited ovicidal and oviposition deterrent effects on D. suzukii females, rendering 100% of the eggs nonviable and reducing oviposition by up to 85%. Regarding selectivity for T. anastrephae, adult mortality reached a maximum of 23%, with no interference in parasitism by surviving females. We highlight the potential of chitosan-sodium alginate nanocapsules carrying EOs as promising alternatives to synthetic insecticides or even crude EOs with high volatility, water immiscibility, and rapid degradation.