{"id":1658,"date":"2025-07-31T12:04:10","date_gmt":"2025-07-31T15:04:10","guid":{"rendered":"https:\/\/inctnanoagro.com.br\/?p=1658"},"modified":"2025-10-23T12:06:48","modified_gmt":"2025-10-23T15:06:48","slug":"lignina-como-estabilizante-de-dupla-funcao-para-proteger-nanoparticulas-de-pcl-contra-fotodegradacao-e-aprimorar-a-liberacao-de-atrazina","status":"publish","type":"post","link":"https:\/\/inctnanoagro.com.br\/en\/lignina-como-estabilizante-de-dupla-funcao-para-proteger-nanoparticulas-de-pcl-contra-fotodegradacao-e-aprimorar-a-liberacao-de-atrazina\/","title":{"rendered":"Lignin as a Dual-Function Stabilizer for Protecting PCL Nanoparticles from Photodegradation and Enhancing Atrazine Delivery"},"content":{"rendered":"<h2><span style=\"font-weight: 400;\">Lignin as a Dual-Function Stabilizer for Protecting PCL Nanoparticles from Photodegradation and Enhancing Atrazine Delivery<\/span><\/h2>\n<p>&nbsp;<\/p>\n<p><b><i>ACS Sustainable Chemistry &amp; Engineering\u00a0<\/i><\/b><\/p>\n<p><i><span style=\"font-weight: 400;\">Vol 13\/Issue 36 &#8211; July 31, 2025<\/span><\/i><\/p>\n<p><a href=\"https:\/\/pubs.acs.org\/doi\/10.1021\/acssuschemeng.5c04472\"><span style=\"font-weight: 400;\">https:\/\/pubs.acs.org\/doi\/10.1021\/acssuschemeng.5c04472<\/span><\/a><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">J\u00e9ssica de Souza Rodrigues<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Amanda de Sousa Martinez de Freitas<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Andr\u00e9 Lopes Ferreira<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Anderson do Espirito Santo Pereira<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Marcelo Bispo de Jesus<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Marystela Ferreira<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Leonardo Fernandes Fraceto<\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-full wp-image-1659\" src=\"https:\/\/inctnanoagro.com.br\/wp-content\/uploads\/2025\/10\/04-Lignin-as-a-Dual-Function-Stabilizer-for-Protecting-PCL-Nanoparticles-from-Photodegradation-and-Enhancing-Atrazine-Delivery.webp\" alt=\"\" width=\"744\" height=\"554\" srcset=\"https:\/\/inctnanoagro.com.br\/wp-content\/uploads\/2025\/10\/04-Lignin-as-a-Dual-Function-Stabilizer-for-Protecting-PCL-Nanoparticles-from-Photodegradation-and-Enhancing-Atrazine-Delivery.webp 744w, https:\/\/inctnanoagro.com.br\/wp-content\/uploads\/2025\/10\/04-Lignin-as-a-Dual-Function-Stabilizer-for-Protecting-PCL-Nanoparticles-from-Photodegradation-and-Enhancing-Atrazine-Delivery-300x223.webp 300w, https:\/\/inctnanoagro.com.br\/wp-content\/uploads\/2025\/10\/04-Lignin-as-a-Dual-Function-Stabilizer-for-Protecting-PCL-Nanoparticles-from-Photodegradation-and-Enhancing-Atrazine-Delivery-16x12.webp 16w\" sizes=\"(max-width: 744px) 100vw, 744px\" \/><\/p>\n<p>&nbsp;<\/p>\n<h3><span style=\"font-weight: 400;\">Resumo:<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Neste estudo, foram desenvolvidas nanopart\u00edculas (NP) de poli(\u03b5-caprolactona) (PCL) estabilizadas com lignina fracionada, e foi avaliada sua efic\u00e1cia na encapsula\u00e7\u00e3o, na fotoprote\u00e7\u00e3o e na atividade herbicida da atrazina (ATZ). As NP foram sintetizadas pelo m\u00e9todo de emuls\u00e3o-evapora\u00e7\u00e3o e caracterizadas por espalhamento din\u00e2mico de luz (DLS), an\u00e1lise de rastreamento de nanopart\u00edculas (NTA) e microscopia de for\u00e7a at\u00f4mica (AFM).<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A cromatografia l\u00edquida de alta efici\u00eancia (HPLC) foi utilizada para determinar a efici\u00eancia de encapsula\u00e7\u00e3o (EE%) e monitorar a degrada\u00e7\u00e3o da ATZ sob exposi\u00e7\u00e3o \u00e0 radia\u00e7\u00e3o ultravioleta (UV). As NP estabilizadas com lignina apresentaram prote\u00e7\u00e3o superior contra a radia\u00e7\u00e3o UV, reduzindo a fotodegrada\u00e7\u00e3o da ATZ em 32% em compara\u00e7\u00e3o com a formula\u00e7\u00e3o comercial. A fra\u00e7\u00e3o KL_30% foi o estabilizante mais eficaz, aumentando a EE% em 15% em rela\u00e7\u00e3o \u00e0 formula\u00e7\u00e3o controle.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Os ensaios herbicidas demonstraram que as NP estabilizadas com KL_30% promoveram 28% maior inibi\u00e7\u00e3o de plantas daninhas em Bidens pilosa e 21% maior inibi\u00e7\u00e3o em Amaranthus viridis, especialmente em doses reduzidas, quando comparadas tanto \u00e0 formula\u00e7\u00e3o comercial quanto \u00e0s NP estabilizadas com PVA.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Esses resultados destacam o potencial das NP estabilizadas com lignina como uma alternativa ecologicamente adequada para a libera\u00e7\u00e3o controlada de herbicidas, oferecendo maior fotoprote\u00e7\u00e3o e efic\u00e1cia prolongada no manejo sustent\u00e1vel de plantas daninhas.<\/span><\/p>\n<p>&nbsp;<\/p>\n<h3><span style=\"font-weight: 400;\">Abstract:<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">In this study, we developed poly(\u03b5-caprolactone) (PCL) nanoparticles (NP) stabilized with fractionated lignin and evaluated their effectiveness in atrazine (ATZ) encapsulation, photoprotection, and herbicidal activity. The NP were synthesized using the emulsion-evaporation method and characterized by dynamic light scattering (DLS), nanoparticle tracking analysis (NTA), and atomic force microscopy (AFM). High-performance liquid chromatography (HPLC) was used to determine encapsulation efficiency (EE%) and monitor ATZ degradation under UV exposure. The lignin-stabilized NP exhibited superior UV protection, reducing ATZ photodegradation by 32% compared to the commercial formulation. KL_30% was the most effective stabilizer, increasing EE% by 15% relative to the control formulation. Herbicidal assays demonstrated that KL_30%-stabilized NP achieved 28% higher weed inhibition in Bidens pilosa and 21% higher inhibition in Amaranthus viridis, particularly at reduced doses, compared to both the commercial formulation and PVA-stabilized NP. These results highlight the potential of lignin-stabilized NP as an eco-friendly alternative for controlled herbicide delivery, offering enhanced photoprotection and prolonged efficacy for sustainable weed management.<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>Lignin as a Dual-Function Stabilizer for Protecting PCL Nanoparticles from Photodegradation and Enhancing Atrazine Delivery &nbsp; ACS Sustainable Chemistry &amp; Engineering\u00a0 Vol 13\/Issue 36 &#8211; July 31, 2025 https:\/\/pubs.acs.org\/doi\/10.1021\/acssuschemeng.5c04472\u00a0 J\u00e9ssica de Souza Rodrigues Amanda de Sousa Martinez de Freitas Andr\u00e9 Lopes Ferreira Anderson do Espirito Santo Pereira Marcelo Bispo de Jesus Marystela Ferreira Leonardo Fernandes [&hellip;]<\/p>","protected":false},"author":4,"featured_media":1659,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[36],"tags":[],"class_list":["post-1658","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-publicacoes"],"_links":{"self":[{"href":"https:\/\/inctnanoagro.com.br\/en\/wp-json\/wp\/v2\/posts\/1658","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/inctnanoagro.com.br\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/inctnanoagro.com.br\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/inctnanoagro.com.br\/en\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/inctnanoagro.com.br\/en\/wp-json\/wp\/v2\/comments?post=1658"}],"version-history":[{"count":2,"href":"https:\/\/inctnanoagro.com.br\/en\/wp-json\/wp\/v2\/posts\/1658\/revisions"}],"predecessor-version":[{"id":1661,"href":"https:\/\/inctnanoagro.com.br\/en\/wp-json\/wp\/v2\/posts\/1658\/revisions\/1661"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inctnanoagro.com.br\/en\/wp-json\/wp\/v2\/media\/1659"}],"wp:attachment":[{"href":"https:\/\/inctnanoagro.com.br\/en\/wp-json\/wp\/v2\/media?parent=1658"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inctnanoagro.com.br\/en\/wp-json\/wp\/v2\/categories?post=1658"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inctnanoagro.com.br\/en\/wp-json\/wp\/v2\/tags?post=1658"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}