{"id":8328,"date":"2025-09-25T08:53:38","date_gmt":"2025-09-25T06:53:38","guid":{"rendered":"https:\/\/www.iqac.csic.es\/nous-tensioactius-darginina-alternativa-sostenible-amb-una-alta-eficacia-antimicrobiana\/"},"modified":"2026-06-16T10:47:32","modified_gmt":"2026-06-16T08:47:32","slug":"nous-tensioactius-darginina-alternativa-sostenible-amb-una-alta-eficacia-antimicrobiana","status":"publish","type":"post","link":"https:\/\/www.iqac.csic.es\/ca\/nous-tensioactius-darginina-alternativa-sostenible-amb-una-alta-eficacia-antimicrobiana\/","title":{"rendered":"Nous tensioactius d\u2019arginina: alternativa sostenible amb una alta efic\u00e0cia antimicrobiana"},"content":{"rendered":"<p>Les investigadores de l\u2019<strong>Institut de Qu\u00edmica Avan\u00e7ada de Catalunya (<\/strong><a href=\"https:\/\/www.iqac.csic.es\/\">IQAC<\/a><strong>)<\/strong><strong>, <\/strong>del<strong> Consell Superior d\u2019Investigacions Cient\u00edfiques (<\/strong><a href=\"https:\/\/www.csic.es\/es\">CSIC<\/a><strong>)<\/strong><strong>, <\/strong>en col\u00b7laboraci\u00f3 amb la <a href=\"https:\/\/www.ua.pt\/\">Universitat d\u2019Aveiro<\/a><strong> (Portugal)<\/strong><strong>,<\/strong> han desenvolupat una nova fam\u00edlia de tensioactius cati\u00f2nics derivats de l\u2019arginina que destaquen per la seva elevada efic\u00e0cia antimicrobiana, la seva capacitat per eradicar biofilms resistents i les seves propietats com a inhibidors de la corrosi\u00f3.<\/p>\n<blockquote><p>\u201cL\u2019objectiu del nostre projecte era dissenyar mol\u00e8cules multifuncionals que oferissin una soluci\u00f3 efica\u00e7 sense comprometre la seguretat ambiental\u201d, expliquen les investigadores principals, <strong>M. Teresa Garc\u00eda i Lourdes P\u00e9rez<\/strong>, investigadores de l\u2019IQAC-CSIC. \u201cEls resultats indiquen que aquests compostos podrien reduir notablement la petjada ecol\u00f2gica de productes qu\u00edmics d\u2019\u00fas quotidi\u00e0\u201d, aclareixen.<\/p><\/blockquote>\n<h4><strong>Alternativa sostenible als productes convencionals<\/strong><\/h4>\n<p>A difer\u00e8ncia dels tensioactius cati\u00f2nics tradicionals \u2014basats en amoni quaternari i presents en desinfectants i productes de neteja quotidians, per\u00f2 amb baixa biodegradabilitat i alta toxicitat aqu\u00e0tica\u2014, aquests nous compostos ofereixen un perfil ambiental molt m\u00e9s favorable. L\u2019<strong>arginina<\/strong>, un amino\u00e0cid essencial present de manera natural a l\u2019organisme, proporciona la base per a aquesta innovaci\u00f3. La creixent preocupaci\u00f3 per la persist\u00e8ncia dels tensioactius tradicionals ha portat diversos pa\u00efsos europeus a plantejar restriccions m\u00e9s estrictes, fet que subratlla la urg\u00e8ncia d\u2019alternatives sostenibles com aquesta.<\/p>\n<p>Els tensioactius basats en arginina s\u2019han sintetitzat a partir de mat\u00e8ries primeres renovables mitjan\u00e7ant processos respectuosos amb el medi ambient. En els estudis realitzats, s\u2019han avaluat les seves propietats antimicrobianes, el seu impacte ambiental i la seva capacitat per protegir materials de la corrosi\u00f3. La seva estructura permet ajustar les propietats biol\u00f2giques i ambientals, optimitzant aix\u00ed l\u2019efic\u00e0cia i la sostenibilitat.<\/p>\n<p>Els resultats demostren que aquests tensioactius s\u00f3n biodegradables en condicions aer\u00f2bies, amb taxes de biodegradaci\u00f3 que superen el 60 % en alguns compostos. A m\u00e9s, presenten una toxicitat aqu\u00e0tica considerablement menor que els tensioactius d\u2019amoni quaternari, cosa que els converteix en opcions m\u00e9s segures per al seu \u00fas en entorns sensibles.<\/p>\n<p>Des del punt de vista microbiol\u00f2gic, aquests tensioactius mostren una potent activitat antimicrobiana davant d\u2019un ampli espectre de microorganismes, incloent-hi soques resistents com <em>Staphylococcus aureus<\/em> resistent a la meticil\u00b7lina (MRSA) i fongs com <em>Candida albicans<\/em>. Tamb\u00e9 s\u00f3n capa\u00e7os d\u2019erradicar biofilms a baixes concentracions, una propietat clau en entorns com sistemes de tractament d\u2019aigua o superf\u00edcies m\u00e8diques.<\/p>\n<p>En l\u2019\u00e0mbit de la protecci\u00f3 de materials, aquests compostos actuen com a inhibidors de la corrosi\u00f3 en acer al carboni, assolint efici\u00e8ncies de fins al 80 % a concentracions molt inferiors a les requerides pels tensioactius tradicionals.<\/p>\n<p>Tot i que els resultats s\u00f3n prometedors, el repte actual \u00e9s optimitzar les rutes sint\u00e8tiques per reduir els costos de producci\u00f3 i facilitar la seva adopci\u00f3 a gran escala. Si es confirma la seva viabilitat industrial, aquests nous tensioactius podrien transformar la manera com desinfectem hospitals, tractem aig\u00fces o protegim materials, contribuint a un futur m\u00e9s sostenible.<\/p>\n<p>Aquest treball s\u2019emmarca en el projecte <strong>PID2022-136354NB-I00<\/strong>, finan\u00e7at pel <strong>Ministeri de Ci\u00e8ncia, Innovaci\u00f3 i Universitats (MCIU)<\/strong> i l\u2019<strong>Ag\u00e8ncia Estatal d\u2019Investigaci\u00f3 (AEI)<\/strong> [10.13039\/501100011033], i cofinan\u00e7at pel <strong>Fons Europeu de Desenvolupament Regional (FEDER)<\/strong>. Els resultats s\u2019han publicat en acc\u00e9s obert a les revistes cient\u00edfiques <em>Journal of Hazardous Materials<\/em> i <em>Colloids and Surfaces B: Biointerfaces<\/em>.<\/p>\n<p>&nbsp;<\/p>\n<p style=\"font-size: 75%;\">Teresa Garc\u00eda, Ana de la Fuente, Lourdes P\u00e9rez, Elena Bautista, Sergio V\u00e1zquez, Olga Kaczerewska, Roberto Martins, Jo\u00e3o\u00a0Tedim. <strong>Ecological assessment and corrosion inhibition potential of novel<\/strong><strong>double-chain arginine-based cationic surfactants. <\/strong><a href=\"https:\/\/doi.org\/10.1016\/j.jhazmat.2025.139611\">https:\/\/doi.org\/10.1016\/j.jhazmat.2025.139611<\/a>.<\/p>\n<p style=\"font-size: 75%;\">Zakaria Hafidi, Maria Teresa Garc\u00eda, Sergio Vazquez, Marta Martinavarro-Mateos, Anderson Ramos, Lourdes P\u00e9rez. <strong>Antimicrobial and biofilm-eradicating properties of simple double-chain arginine-based surfactants. <\/strong><a href=\"https:\/\/doi.org\/10.1016\/j.colsurfb.2025.114762\">https:\/\/doi.org\/10.1016\/j.colsurfb.2025.114762<\/a><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Les investigadores de l\u2019Institut de Qu\u00edmica Avan\u00e7ada de Catalunya (IQAC), del Consell Superior d\u2019Investigacions Cient\u00edfiques (CSIC), en col\u00b7laboraci\u00f3 amb la Universitat d\u2019Aveiro (Portugal), han desenvolupat una nova fam\u00edlia de tensioactius cati\u00f2nics derivats de l\u2019arginina que destaquen per la seva elevada efic\u00e0cia antimicrobiana, la seva capacitat per eradicar biofilms resistents i les seves propietats com a<a class=\"more-link\" href=\"https:\/\/www.iqac.csic.es\/ca\/nous-tensioactius-darginina-alternativa-sostenible-amb-una-alta-eficacia-antimicrobiana\/\">Continue reading <span class=\"screen-reader-text\">\u00abNous tensioactius d\u2019arginina: alternativa sostenible amb una alta efic\u00e0cia antimicrobiana\u00bb<\/span><\/a><\/p>\n","protected":false},"author":3,"featured_media":4552,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[73],"tags":[],"class_list":["post-8328","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","entry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - 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