{"id":237014,"date":"2026-05-25T19:28:09","date_gmt":"2026-05-25T19:28:09","guid":{"rendered":"http:\/\/6a147f44198c0b348ee5b1ea"},"modified":"2026-05-25T19:28:09","modified_gmt":"2026-05-25T19:28:09","slug":"estas-algas-que-atrapan-microplasticos-traen-una-nueva-esperanza","status":"publish","type":"post","link":"https:\/\/sarmiento24h.com\/?p=237014","title":{"rendered":"Estas algas que atrapan micropl\u00e1sticos traen una nueva esperanza"},"content":{"rendered":"<p>Los micropl\u00e1sticos, part\u00edculas microsc\u00f3picas de pl\u00e1stico de menos de 5 mm de tama\u00f1o, van a la deriva por el mar, los r\u00edos y el aire sin descomponerse de forma natural. Si los peces y otros organismos de los ecosistemas marinos las ingieren por error, no solo son perjudiciales para los organismos, sino que tambi\u00e9n pueden afectar a la salud humana en las fases superiores de la cadena alimentaria.<\/p>\n<p>Sin embargo, los <a href=\"https:\/\/es.wired.com\/articulos\/los-microplasticos-estan-envenenando-tu-flora-intestinal\">micropl\u00e1sticos<\/a> son tan diminutos que muchas depuradoras son incapaces de eliminarlos eficazmente. Un equipo de investigadores de la Universidad de Missouri y de otros lugares <a href=\"https:\/\/www.nature.com\/articles\/s41467-025-67543-5\" target=\"_blank\">ha desarrollado un<\/a> nuevo m\u00e9todo para eliminar los micropl\u00e1sticos del agua utilizando algas.<\/p>\n<p>El equipo utiliz\u00f3 un tipo de bacterias fotosint\u00e9ticas, conocidas t\u00e9cnicamente como cianobacterias. Modificando gen\u00e9ticamente las propiedades superficiales de sus c\u00e9lulas, tiene la capacidad de adsorber pl\u00e1sticos, y puede sumergirse directamente en el fondo del agua para recogerlos. Adem\u00e1s, los micropl\u00e1sticos adsorbidos pueden recuperarse y reciclarse (<em>upcycling<\/em>) como pel\u00edcula de pl\u00e1stico.<\/p>\n<figure class=\"AssetEmbedWrapper-iJvQnD cOWUYC asset-embed\">\n<div class=\"AssetEmbedAssetContainer-fnduJP iaVSwI asset-embed__asset-container\"><span class=\"SpanWrapper-kFnjvc eKnjjD responsive-asset AssetEmbedResponsiveAsset-gaAbQ hXaxHA asset-embed__responsive-asset\"><picture class=\"ResponsiveImagePicture-jKunQM gjCCFj AssetEmbedResponsiveAsset-gaAbQ hXaxHA asset-embed__responsive-asset responsive-image\"><img decoding=\"async\" alt=\"Cianobacterias con propiedades de superficie celular modificadas genticamente. Tienen la propiedad de adsorber plstico.\" loading=\"lazy\" class=\"ResponsiveImageContainer-dkeESL cQPiWi responsive-image__image\" srcset=\"https:\/\/media.es.wired.com\/photos\/6a147f4334fcd9a2baa65299\/master\/w_120,c_limit\/012926_Dai2.png 120w, https:\/\/media.es.wired.com\/photos\/6a147f4334fcd9a2baa65299\/master\/w_240,c_limit\/012926_Dai2.png 240w, https:\/\/media.es.wired.com\/photos\/6a147f4334fcd9a2baa65299\/master\/w_320,c_limit\/012926_Dai2.png 320w, https:\/\/media.es.wired.com\/photos\/6a147f4334fcd9a2baa65299\/master\/w_640,c_limit\/012926_Dai2.png 640w, https:\/\/media.es.wired.com\/photos\/6a147f4334fcd9a2baa65299\/master\/w_960,c_limit\/012926_Dai2.png 960w, https:\/\/media.es.wired.com\/photos\/6a147f4334fcd9a2baa65299\/master\/w_1280,c_limit\/012926_Dai2.png 1280w, https:\/\/media.es.wired.com\/photos\/6a147f4334fcd9a2baa65299\/master\/w_1600,c_limit\/012926_Dai2.png 1600w\" sizes=\"100vw\" src=\"https:\/\/media.es.wired.com\/photos\/6a147f4334fcd9a2baa65299\/master\/w_1600%2Cc_limit\/012926_Dai2.png\"><\/picture><\/span><\/div>\n<div class=\"CaptionWrapper-bpPcvW iDPSlt caption AssetEmbedCaption-eZIMNW gMgneI asset-embed__caption\" data-testid=\"caption-wrapper\" readability=\"6.5\"><span class=\"BaseText-fEwdHD CaptionText-cQpRdU kRTNAB hbiMYj caption__text\" readability=\"28\"><\/p>\n<p>Cianobacterias con propiedades de superficie celular modificadas gen\u00e9ticamente. Tienen la propiedad de adsorber pl\u00e1stico.<\/p>\n<p><\/span><span class=\"BaseText-fEwdHD CaptionCredit-cUgOGk iQbGEh hRFzlA caption__credit\">Foto: Abbie Lankitus<\/span><\/div>\n<\/figure>\n<h2>Utilizando la propiedad com\u00fan de \u201chidrofobicidad\u201d<\/h2>\n<p><a href=\"https:\/\/www.nature.com\/articles\/s41467-021-27665-y\" target=\"_blank\">El equipo de investigaci\u00f3n hab\u00eda desarrollado<\/a> previamente cianobacterias modificadas gen\u00e9ticamente para producir \u2018limoneno\u2019, un compuesto arom\u00e1tico c\u00edtrico. La cepa de cianobacterias utilizada como base para esta modificaci\u00f3n carec\u00eda originalmente de las estructuras similares a pelos llamadas \u00abcilios\u00bb que est\u00e1n presentes en la superficie de las c\u00e9lulas.<\/p>\n<p>Por lo tanto, el limoneno, un tipo de aceite, se secreta y se acumula en la superficie lisa y ciliada de las c\u00e9lulas, transform\u00e1ndola en un material hidrof\u00f3bico que repele el agua. De forma similar a como los aceites se agrupan al mezclarlos con agua, las cianobacterias modificadas se agregan en el agua. A medida que estos agregados se depositan en el fondo, se logra un cultivo eficiente y continuo en el recipiente de cultivo sin bloquear la luz.<\/p>\n<p>Por otro lado, la superficie de los micropl\u00e1sticos tambi\u00e9n es hidrof\u00f3bica. El equipo de investigaci\u00f3n plante\u00f3 la hip\u00f3tesis de que si se mezclaban cianobacterias modificadas con micropl\u00e1sticos en agua, esta propiedad hidrof\u00f3bica compartida provocar\u00eda su agregaci\u00f3n y precipitaci\u00f3n, eliminando as\u00ed los micropl\u00e1sticos.<\/p>\n<p>Cuando se mezclaron cianobacterias modificadas con micropl\u00e1sticos de poliestireno, se form\u00f3 un precipitado que elimin\u00f3 el 91.4 % de los micropl\u00e1sticos en una hora. Se observ\u00f3 una adsorci\u00f3n similar con otros tipos de micropl\u00e1sticos, como el tereftalato de polietileno y el polietileno, lo que demuestra que los micropl\u00e1sticos presentes en las aguas superficiales y residuales tambi\u00e9n pueden eliminarse.<\/p>\n<h2>Resolver tres desaf\u00edos con un solo enfoque<\/h2>\n<p>A continuaci\u00f3n, el equipo de investigaci\u00f3n consider\u00f3 la posibilidad de aplicar este m\u00e9todo al tratamiento de aguas residuales. Al a\u00f1adir cianobacterias modificadas a muestras de aguas residuales y cultivarlas durante cinco d\u00edas, lograron eliminar hasta el 97.5 % de los nitratos, casi todo el amon\u00edaco y m\u00e1s del 30% de los fosfatos, todos nutrientes presentes en las aguas residuales, lo que confirma que el m\u00e9todo tiene cierto grado de capacidad para el tratamiento de aguas residuales.<\/p>\n<p>Adem\u00e1s, el equipo de investigaci\u00f3n demostr\u00f3 que pod\u00edan recuperar dep\u00f3sitos de cianobacterias modificadas y micropl\u00e1sticos, secarlos y extraer el material para crear un nuevo biopl\u00e1stico en forma de pel\u00edcula. Esta pel\u00edcula reciclada presenta un color verde dorado debido a la presencia de pigmentos derivados de cianobacterias. Curiosamente, la pel\u00edcula mostr\u00f3 aproximadamente el doble de elongaci\u00f3n y tenacidad (resistencia a la fractura) en comparaci\u00f3n con una pel\u00edcula de poliestireno puro.<\/p>\n<h2>Tambi\u00e9n se han realizado evaluaciones ambientales y econ\u00f3micas<\/h2>\n<p>Se estima que la incorporaci\u00f3n de la fotos\u00edntesis de cianobacterias al sistema podr\u00eda reducir las emisiones totales de <a href=\"https:\/\/es.wired.com\/articulos\/este-nuevo-material-usa-plastico-para-absorber-dioxido-de-carbono\">di\u00f3xido de carbono<\/a> del proceso a niveles negativos. Adem\u00e1s, los c\u00e1lculos sugieren que el uso de un sistema abierto que no requiere una inversi\u00f3n de capital elevada podr\u00eda permitir la producci\u00f3n de biopl\u00e1sticos a un precio competitivo con los m\u00e9todos de producci\u00f3n de biopl\u00e1sticos existentes.<\/p>\n<p>\u201cAl eliminar los micropl\u00e1sticos, purificar las aguas residuales y transformar los micropl\u00e1sticos eliminados en productos biopl\u00e1sticos, podemos abordar tres desaf\u00edos con un solo m\u00e9todo\u201d, explica Susie Dye, profesora de la Universidad de Missouri y una de las autoras principales del art\u00edculo. \u201cNuestra investigaci\u00f3n a\u00fan est\u00e1 en sus primeras etapas, pero el objetivo final es integrar este nuevo proceso en las plantas de tratamiento de aguas residuales existentes para que las ciudades puedan purificar el agua de manera m\u00e1s eficaz, reducir la contaminaci\u00f3n y producir productos \u00fatiles\u201d.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Los micropl\u00e1sticos, part\u00edculas microsc\u00f3picas de pl\u00e1stico de&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":237015,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[46],"tags":[],"class_list":["post-237014","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tecnologia"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - 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