{"id":69367,"date":"2025-06-28T12:00:00","date_gmt":"2025-06-28T12:00:00","guid":{"rendered":"https:\/\/www.africa-press.net\/senegal\/politique\/production-de-paracetamol-a-partir-de-dechets-plastiques"},"modified":"2025-06-29T17:31:18","modified_gmt":"2025-06-29T17:31:18","slug":"production-de-paracetamol-a-partir-de-dechets-plastiques","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/production-de-paracetamol-a-partir-de-dechets-plastiques","title":{"rendered":"Production de Parac\u00e9tamol \u00e0 Partir de D\u00e9chets Plastiques"},"content":{"rendered":"<p><span style=\"color: #ff6600\"><strong>Africa-Press &#8211; Senegal. <\/strong><\/span>Cette expe\u0301rience \u00ab montre qu\u2019il est possible de produire ce me\u0301dicament essentiel a\u0300 partir de de\u0301chets plastiques, via un processus qui ne pourrait pas fonctionner a\u0300 partir d\u2019une synthe\u0300se seulement chimique ou seulement biologique \u00bb, re\u0301sume cette e\u0301tude publie\u0301e dans la revue scientifique Nature Chemistry et re\u0301alise\u0301e par des chercheurs de l\u2019universite\u0301 e\u0301cossaise d\u2019Edimbourg.<\/p>\n<p>Le parace\u0301tamol, utilise\u0301 contre la douleur et la fie\u0300vre, est l\u2019un des me\u0301dicaments les plus courants. Il est produit a\u0300 base de de\u0301rive\u0301s du pe\u0301trole, le plus souvent par des sous-traitants base\u0301s en Asie, via des techniques tre\u0300s peu cou\u0302teuses mais assez polluantes. Les auteurs de l\u2019e\u0301tude, finance\u0301e entre autres par le laboratoire pharmaceutique AstraZeneca, ont proce\u0301de\u0301 en plusieurs e\u0301tapes.<\/p>\n<p><b>Transformer la mole\u0301cule des bacte\u0301ries en parace\u0301tamol<\/b><\/p>\n<p>Ils ont d\u2019abord utilise\u0301 des composants d\u2019une bouteille usage\u0301e en plastique PET (polyte\u0301re\u0301phtalate d\u2019e\u0301thyle\u0300ne) pour induire une re\u0301action chimique dans une souche de bacte\u0301ries Escherichia coli (E. coli). A\u0300 l\u2019issue de cette premie\u0300re e\u0301tape, les bacte\u0301ries ont synthe\u0301tise\u0301 une mole\u0301cule, dite \u00ab PABA \u00bb. Puis, en modifiant ge\u0301ne\u0301tiquement les bacte\u0301ries, les scientifiques leur ont permis de transformer cette mole\u0301cule en parace\u0301tamol.<\/p>\n<p>Les auteurs avancent que cette expe\u0301rience ouvre la voie a\u0300 de nouvelles techniques pour recycler les de\u0301chets a\u0300 base de plastique. Reste que l\u2019application a\u0300 grande e\u0301chelle n\u2019a rien d\u2019e\u0301vident. Il reste \u00ab plusieurs conside\u0301rations pratiques \u00bb a\u0300 re\u0301soudre pour aller au-dela\u0300 de la seule \u00ab de\u0301monstration de faisabilite\u0301 \u00bb faite par cette e\u0301tude, e\u0301crivent plusieurs chercheurs n\u2019ayant pas participe\u0301 a\u0300 l\u2019e\u0301tude dans un commentaire, e\u0301galement publie\u0301 par Nature Chemistry.<\/p>\n<p><b>Une expe\u0301rience \u00ab prometteuse \u00bb<\/b><\/p>\n<p>Ils pointent que la re\u0301action initiale ne produit qu\u2019une quantite\u0301 limite\u0301e de mole\u0301cules PABA, ce qui \u00ab pourrait ne pas suffire a\u0300 des applications industrielles \u00bb. Mais l\u2019expe\u0301rience est \u00ab prometteuse \u00bb, admettent-ils, soulignant l\u2019inte\u0301re\u0302t d\u2019e\u0301tudier des processus qui me\u0301langent ainsi la biologie et des re\u0301actions chimiques artificielles.<\/p>\n<p>L\u2019e\u0301tude a ne\u0301anmoins suscite\u0301 le scepticisme chez des organisations de de\u0301fense de l\u2019environnement. \u00ab Depuis des anne\u0301es, il ne passe jamais quelques mois sans qu\u2019on ait une nouvelle +bacte\u0301rie mangeuse de plastique+ \u00bb, a ironise\u0301 aupre\u0300s de l\u2019AFP Melissa Valliant de l\u2019ONG Beyond Plastic. \u00ab Ces de\u0301couvertes n\u2019atteignent jamais une e\u0301chelle suffisante pour faire face au proble\u0300me majeur que constitue la pollution aux plastiques \u00bb.<\/p>\n<p><strong>Pour plus d&rsquo;informations et d&rsquo;analyses sur la <span style=\"color: #ff6600\">Senegal<\/span>, suivez <span style=\"color: #ff6600\">Africa-Press<\/span><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Africa-Press &#8211; Senegal. Cette expe\u0301rience \u00ab montre qu\u2019il est possible de produire ce me\u0301dicament essentiel a\u0300 partir de de\u0301chets plastiques, via un processus qui ne pourrait pas fonctionner a\u0300 partir d\u2019une synthe\u0300se seulement chimique ou seulement biologique \u00bb, re\u0301sume cette e\u0301tude publie\u0301e dans la revue scientifique Nature Chemistry et re\u0301alise\u0301e par des chercheurs de l\u2019universite\u0301 [&hellip;]<\/p>\n","protected":false},"author":82,"featured_media":69366,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,10],"tags":[44],"class_list":["post-69367","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-toutes-les-actualites","tag-senegal-2"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.1 (Yoast SEO v27.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Production de Parac\u00e9tamol \u00e0 Partir de D\u00e9chets Plastiques - 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