{"id":35501,"date":"2018-04-17T04:19:24","date_gmt":"2018-04-17T08:19:24","guid":{"rendered":"https:\/\/paginiromanesti.ca\/?p=35501"},"modified":"2018-04-17T04:19:24","modified_gmt":"2018-04-17T08:19:24","slug":"fost-descoperita-enzima-care-mananca-plastic","status":"publish","type":"post","link":"https:\/\/paginiromanesti.ca\/2018\/04\/17\/fost-descoperita-enzima-care-mananca-plastic\/","title":{"rendered":"A fost descoperit\u0103 o enzim\u0103 care m\u0103n\u00e2nc\u0103 plastic"},"content":{"rendered":"<p><strong>Cercet\u0103torii americani \u0219i britanici au descoperit accidental o enzim\u0103 capabil\u0103 s\u0103 distrug\u0103 materialul plastic, care ar putea contribui la rezolvarea problemei globale legate de acest tip de poluare.<\/strong><\/p>\n<p>Mai mult de opt milioane de tone de materiale plastice ajung \u00een oceanele lumii \u00een fiecare an, provoc\u00e2nd \u00eengrijorarea legat\u0103 de toxicitatea acestui derivat petrolier \u0219i impactul acestuia asupra s\u0103n\u0103t\u0103\u021bii genera\u021biilor viitoare \u0219i a mediului.<\/p>\n<p>\u00cen ciuda eforturilor de reciclare, majoritatea acestor materiale plastice pot r\u0103m\u00e2ne pe p\u0103m\u00e2nt sau \u00een ape sute de ani. Oamenii de \u0219tiin\u021b\u0103 caut\u0103 o modalitate de a le elimina c\u00e2t mai ecologic.<\/p>\n<p>Oamenii de \u0219tiin\u021b\u0103 de la Universitatea Portsmouth din Regatul Unit \u0219i Laboratorul Na\u021bional de Energie Regenerabil\u0103 din cadrul Departamentului Energiei din SUA \u0219i-au concentrat eforturile asupra unei bacterii descoperite \u00een Japonia cu c\u00e2\u021biva ani \u00een urm\u0103: Ideonella sakaiensis. Ea se alimenteaz\u0103 numai pe cu un anume tip de plastic, polietilen tereftalat (PET), care este utilizat \u00een multe sticle de plastic.<\/p>\n<p>Cercet\u0103torii japonezi consider\u0103 c\u0103 aceast\u0103 bacterie a evoluat destul de recent \u00eentr-un centru de reciclare, deoarece materialele plastice au fost inventate abia \u00een 1940.<\/p>\n<p>Scopul echipei comune americano-britanice a fost s\u0103 \u00een\u021beleag\u0103 func\u021bionarea uneia dintre enzimele sale numite PETase, prin descoperirea structurii sale. &#8220;Dar au mers un pas mai departe prin proiectarea accidentala a unei enzime care este chiar mai eficienta la distrugerea plasticului PET&#8221;, potrivit concluziilor publicate in Proceedings of the American Academy of Sciences.<\/p>\n<p>Oamenii de \u0219tiin\u021b\u0103 lucreaz\u0103 acum la \u00eembun\u0103t\u0103\u021birea performan\u021bei \u00een speran\u021ba de a fi capabili \u00een cele din urm\u0103 s\u0103 o utilizeze \u00eentr-un proces industrial de distrugere a materialelor plastice.<\/p>\n<p>&#8220;Norocul joac\u0103 adesea un rol important \u00een cercetarea \u0219tiin\u021bific\u0103 de baz\u0103 \u0219i descoperirea noastr\u0103 nu face excep\u021bie&#8221;, a spus John McGeehan, profesor la \u0218coala de \u0218tiin\u021be Biologice din Portsmouth.<\/p>\n<p>\u00cen timp ce avansul este modest, aceast\u0103 descoperire nea\u0219teptat\u0103 sugereaz\u0103 c\u0103 exist\u0103 loc pentru \u00eembun\u0103t\u0103\u021birea \u00een continuare a acestor enzime, pentru a ne aduce mai aproape de o solu\u021bie pentru reciclarea resturilor de plastic &#8221; a concluzionat McGeehan, conform <a href=\"http:\/\/www.lapresse.ca\/sciences\/decouvertes\/201804\/16\/01-5161285-des-scientifiques-creent-par-hasard-une-enzyme-devoreuse-de-plastique.php\" target=\"_blank\" rel=\"noopener\"><em>La Presse<\/em><\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Cercet\u0103torii americani \u0219i britanici au descoperit accidental o enzim\u0103 capabil\u0103 s\u0103 distrug\u0103 materialul plastic, care ar putea contribui la rezolvarea problemei globale legate de acest tip de poluare. Mai mult de opt milioane de tone de materiale plastice ajung \u00een oceanele lumii \u00een fiecare an, provoc\u00e2nd \u00eengrijorarea legat\u0103 de toxicitatea acestui derivat petrolier \u0219i impactul [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":35502,"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":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[54],"tags":[2367,2368,1645],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/paginiromanesti.ca\/wp-content\/uploads\/2018\/04\/ea3db9092ffd1c3e81584d04ee44408be272e0d610b413489df3_640_recyclable-bottles.jpg","jetpack_shortlink":"https:\/\/wp.me\/p9PoWe-9eB","_links":{"self":[{"href":"https:\/\/paginiromanesti.ca\/wp-json\/wp\/v2\/posts\/35501"}],"collection":[{"href":"https:\/\/paginiromanesti.ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/paginiromanesti.ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/paginiromanesti.ca\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/paginiromanesti.ca\/wp-json\/wp\/v2\/comments?post=35501"}],"version-history":[{"count":0,"href":"https:\/\/paginiromanesti.ca\/wp-json\/wp\/v2\/posts\/35501\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/paginiromanesti.ca\/wp-json\/wp\/v2\/media\/35502"}],"wp:attachment":[{"href":"https:\/\/paginiromanesti.ca\/wp-json\/wp\/v2\/media?parent=35501"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/paginiromanesti.ca\/wp-json\/wp\/v2\/categories?post=35501"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/paginiromanesti.ca\/wp-json\/wp\/v2\/tags?post=35501"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}