{"id":66918,"date":"2017-09-13T18:22:07","date_gmt":"2017-09-13T18:22:07","guid":{"rendered":"https:\/\/cnpem.br\/cientificos-argentinos-desarrollan-un-gel-inteligente-que-se-expande-y-encoge\/"},"modified":"2017-09-13T18:22:07","modified_gmt":"2017-09-13T18:22:07","slug":"cientificos-argentinos-desarrollan-un-gel-inteligente-que-se-expande-y-encoge","status":"publish","type":"post","link":"https:\/\/cnpem.br\/en\/cientificos-argentinos-desarrollan-un-gel-inteligente-que-se-expande-y-encoge\/","title":{"rendered":"Cient\u00edficos argentinos desarrollan un gel inteligente que se expande y encoge"},"content":{"rendered":"

OEI<\/a>, 11 de setembro de 2017<\/p>\n

\"\"<\/a><\/p>\n

El material se fabrica a base de queratina (una prote\u00edna extra\u00edda de cuernos de vaca) y podr\u00eda servir para liberar medicamentos o absorber contaminantes
\n(Agencia CyTA-Instituto Leloir) Un tipo de gel inteligente, que se hincha o contrae seg\u00fan el pH o grado de acidez del l\u00edquido con el que interact\u00faa, fue desarrollado por investigadores argentinos. Y podr\u00eda tener aplicaciones en medicina y en higiene y sanidad ambiental.<\/strong><\/p>\n

El nuevo hidrogel o gel en medio acuoso tiene una consistencia similar a la de la gelatina, es biodegradable \u201cy responde a un est\u00edmulo [en este caso, el pH] cambiando una propiedad de manera reversible\u201d, indic\u00f3 a la Agencia CyTA-Leloir el director del proyecto, el doctor Guillermo Copello, investigador del Instituto de Qu\u00edmica y Metabolismo del F\u00e1rmaco (IQUIMEFA), que depende de la Facultad de Farmacia y Bioqu\u00edmica (FFyB) de la UBA y del CONICET.<\/p>\n

En particular, si se le agregan gotas de jugo de lim\u00f3n (\u00e1cido), el gel se encoge expulsando agua de su interior. Pero si se le gotea lavandina (alcalina), el gel se hincha y absorbe agua, explic\u00f3 Copello.<\/p>\n

Ese comportamiento peculiar podr\u00eda derivar en distintas aplicaciones. Por ejemplo, podr\u00eda servir como matriz o \u201cnanocomp\u00f3sito\u201d que, al encogerse, libere a trav\u00e9s de sus poros ciertos medicamentos, como antibacterianos. \u201cO, al expandirse, podr\u00eda absorber contaminantes en un lecho de agua\u201d, postul\u00f3 Copello.<\/p>\n

Tal como describe la revista \u201cMaterials Science & Engineering\u201d, una de las ventajas del hidrogel es que se fabrica con queratina, una prote\u00edna con estructura fibrosa que constituye estructuras como pelos, u\u00f1as y plumas.\u00a0Y que, en este caso, fue extra\u00edda de cuernos de vaca, un desecho de la industria ganadera. \u201cPor un lado, reducimos la carga de desechos y por el otro generamos un valor agregado a algo que no lo ten\u00eda, lo que favorece a la econom\u00eda de la actividad productiva\u201d, explico el tambi\u00e9n investigador del Departamento de Qu\u00edmica Anal\u00edtica y Fisicoqu\u00edmica de la FFyB de la UBA.<\/p>\n

Para generar los hidrogeles, los investigadores usan reactivos de la qu\u00edmica verde, como soluciones alcalinas acuosas y alcohol et\u00edlico, lo que evita que el proceso de producci\u00f3n sea contaminante. El pr\u00f3ximo paso, se\u00f1al\u00f3 Copello, ser\u00eda vincularse con alguna empresa interesada para transferir este desarrollo al mercado.<\/p>\n

Del trabajo participaron Mar\u00eda Luz Peralta Ramos, Joaqu\u00edn Gonz\u00e1lez,\u00a0Lucas Fabian y\u00a0Mar\u00eda Emilia Villanueva\u00a0(Premio Nacional L\u00b4Or\u00e9al\u2013UNESCO \u201cPor las Mujeres en la Ciencia\u201d 2016), todos investigadores del IQUIMEFA; y Claudio P\u00e9rez,\u00a0del Instituto en Investigaciones en Ciencia y Tecnolog\u00eda de Materiales (INTEMA), que depende de la\u00a0Universidad de Mar del Plata y del\u00a0CONICET. Y fue financiado por medio de becas\u00a0y subsidios de la UBA, el CONICET, la Agencia Nacional de Promoci\u00f3n Cient\u00edfica y Tecnol\u00f3gica (del Ministerio de Ciencia, Tecnolog\u00eda e Innovaci\u00f3n Productiva)\u00a0y el Laboratorio Nacional de Luz\u00a0Sincrotr\u00f3n\u00a0del Centro de Investigaci\u00f3n en Energ\u00eda y Materiales, de Brasil.<\/p>\n

 <\/p>\n

Repercuss\u00e3o: AgenciaCyTA<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

OEI, 11 de setembro de 2017 El material se fabrica a base de queratina (una prote\u00edna extra\u00edda de cuernos de vaca) y podr\u00eda servir para liberar medicamentos o absorber contaminantes…<\/p>\n","protected":false},"author":17,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[1452,1456],"tags":[],"class_list":["post-66918","post","type-post","status-publish","format-standard","hentry","category-clipping-cnpem-en","category-clipping-lnls-en","category-1452","category-1456","description-off"],"acf":[],"yoast_head":"\nCient\u00edficos argentinos desarrollan un gel inteligente que se expande y encoge - CNPEM<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cnpem.br\/en\/cientificos-argentinos-desarrollan-un-gel-inteligente-que-se-expande-y-encoge\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cient\u00edficos argentinos desarrollan un gel inteligente que se expande y encoge - 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