{"id":45341,"date":"2023-06-04T16:46:20","date_gmt":"2023-06-04T16:46:20","guid":{"rendered":"https:\/\/www.africa-press.net\/senegal\/politique\/les-microfibres-perturbent-le-metabolisme-des-huitres"},"modified":"2023-06-04T18:19:15","modified_gmt":"2023-06-04T18:19:15","slug":"les-microfibres-perturbent-le-metabolisme-des-huitres","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/les-microfibres-perturbent-le-metabolisme-des-huitres","title":{"rendered":"Les microfibres perturbent le m\u00e9tabolisme des hu\u00eetres"},"content":{"rendered":"<p><span style=\"color: #ff6600\"><strong>Africa-Press &#8211; Senegal. <\/strong><\/span>Ce qui nous a surpris, ce sont les effets de\u0301le\u0301te\u0300res qu\u2019ont les fibres naturelles sur la digestion et l\u2019immunite\u0301 de l\u2019hui\u0302tre\u201d, explique Camille De\u0301tre\u0301e, mai\u0302tre de confe\u0301rence en biologie marine a\u0300 l\u2019Universite\u0301 de Caen-Normandie, cite\u0301e dans un communique\u0301. \u201cLa rugosite\u0301 de la surface des fibres naturelles est plus importante et provoque vraisemblablement une inflammation plus forte des parois digestives au cours du transit\u201d, dit-elle.<\/p>\n<p><b>Hui\u0302tres creuses<\/b><\/p>\n<p>L\u2019industrie textile utilise en outre jusqu\u2019a\u0300 8.000 composants chimiques diffe\u0301rents pour ame\u0301liorer les proprie\u0301te\u0301s des ve\u0302tements, la teinture ou le traitement aux pesticides, questionnant la non-dangerosite\u0301 suppose\u0301e des fibres naturelles, selon les auteurs. Chaque anne\u0301e, environ 2 millions de tonnes de microfibres, principalement d\u2019origine naturelle, sont rejete\u0301es dans les oce\u0301ans, en grande partie par le biais des lave-linges domestiques, avant d\u2019e\u0302tre inge\u0301re\u0301s par les organismes marins, rappelle cette e\u0301tude mene\u0301e par des scientifiques de l\u2019Ifremer, de l\u2019Universite\u0301 de Bretagne Occidentale, du CNRS et de l\u2019Universite\u0301 du Mans.<\/p>\n<p>Ces derniers ont expose\u0301 des hui\u0302tres creuses a\u0300 des microfibres textiles naturelles (laine, coton biologique ou non) et synthe\u0301tiques (acrylique, nylon et polyester) et a\u0300 leurs additifs chimiques pendant 96 heures. Ils ont ensuite e\u0301tudie\u0301 la capacite\u0301 d\u2019hui\u0302tres a\u0300 inge\u0301rer ces microfibres et compare\u0301 les effets sur leur sante\u0301.<\/p>\n<p><b>La mode lente<\/b><\/p>\n<p>Une premie\u0300re expe\u0301rience a e\u0301te\u0301 re\u0301alise\u0301e avec une concentration de 10 microfibres par litre, conside\u0301re\u0301 comme le taux moyen dans les oce\u0301ans, et un sce\u0301nario \u201ccatastrophe\u201d avec une concentration de 10.000 microfibres par litre. \u201cNous n\u2019avons pas observe\u0301 plus d\u2019effets sur les hui\u0302tres expose\u0301es a\u0300 de fortes ou de faibles concentrations en microfibres. Cela sugge\u0300re qu\u2019une faible dose environnementale est suffisante pour de\u0301clencher des effets sur leur sante\u0301\u201d, pre\u0301cise Mme De\u0301tre\u0301e.<\/p>\n<p>Selon Arnaud Huvet, biologiste marin a\u0300 l\u2019Ifremer et coauteur, l\u2019e\u0301tude montre que les microfibres d\u2019origine naturelle \u201cne semblent pas moins impactantes que les synthe\u0301tiques sur la sante\u0301 des hui\u0302tres\u201d. \u201cIl est ne\u0301anmoins important de tenir compte de leur dure\u0301e de persistance dans l\u2019environnement marin : de quelques semaines ou mois pour les fibres 100% naturelles, contre des dizaines voire centaines d\u2019anne\u0301es pour les mate\u0301riaux synthe\u0301tiques\u201d. Pluto\u0302t que de promouvoir des fibres naturelles, les auteurs plaident pour l\u2019adoption d\u2019une mode lente (\u201cslow fashion\u201d) e\u0301tendant la dure\u0301e de vie des ve\u0302tements.<\/p>\n<p><strong>Pour plus d&rsquo;informations et d&rsquo;analyses sur la <a href=\"https:\/\/www.africa-press.net\/senegal\">Senegal<\/a>, suivez <a href=\"https:\/\/www.africa-press.net\/\">Africa-Press<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Africa-Press &#8211; Senegal. Ce qui nous a surpris, ce sont les effets de\u0301le\u0301te\u0300res qu\u2019ont les fibres naturelles sur la digestion et l\u2019immunite\u0301 de l\u2019hui\u0302tre\u201d, explique Camille De\u0301tre\u0301e, mai\u0302tre de confe\u0301rence en biologie marine a\u0300 l\u2019Universite\u0301 de Caen-Normandie, cite\u0301e dans un communique\u0301. \u201cLa rugosite\u0301 de la surface des fibres naturelles est plus importante et provoque vraisemblablement [&hellip;]<\/p>\n","protected":false},"author":82,"featured_media":45340,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,10],"tags":[43,47,44],"class_list":["post-45341","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-toutes-les-actualites","tag-africa-press-2","tag-africa-press-senegal","tag-senegal-2"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.1 (Yoast SEO v27.0) - 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