{"id":7784,"date":"2022-08-15T23:00:00","date_gmt":"2022-08-15T23:00:00","guid":{"rendered":"https:\/\/www.africa-press.net\/gabon\/?p=7784"},"modified":"2022-08-04T21:17:15","modified_gmt":"2022-08-04T21:17:15","slug":"biotechnologie-la-soie-des-araignees-une-fibre-tres-performante","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/gabon\/toutes-les-actualites\/biotechnologie-la-soie-des-araignees-une-fibre-tres-performante","title":{"rendered":"Biotechnologie : la soie des araign\u00e9es, une fibre tr\u00e8s performante"},"content":{"rendered":"<p><span style=\"color: #ff6600\"><strong>Africa-Press &#8211; Gabon. <\/strong><\/span>Bien avant l&rsquo;arriv\u00e9e de Spider-Man, les araign\u00e9es et leurs toiles complexes fascinaient d\u00e9j\u00e0 les Hommes. Fruit de 400 millions d&rsquo;ann\u00e9es d&rsquo;\u00e9volution, la soie des araign\u00e9es est consid\u00e9r\u00e9e comme le saint Graal en mati\u00e8re de performance de fibre.<\/p>\n<p>Cinq fois plus r\u00e9sistante que l&rsquo;acier et trois fois plus que le Kevlar &#8211; un mat\u00e9riau \u00e0 base de p\u00e9trole utilis\u00e9 pour r\u00e9aliser des gilets pare-balles -, la soie d&rsquo;araign\u00e9e est un des mat\u00e9riaux les plus r\u00e9sistants sur terre, qui peut \u00eatre transform\u00e9 en fibre. Les chercheurs estiment que cette fibre peut supporter un poids de plus de 45 tonnes par cm\u00b2 ! Le tout en conservant une flexibilit\u00e9 et une l\u00e9g\u00e8ret\u00e9 \u00e0 couper le souffle.<\/p>\n<p>Malheureusement, au fil de l&rsquo;histoire, et malgr\u00e9 des efforts incessants, diverses tentatives infructueuses ont conduit \u00e0 un constat sans appel : l&rsquo;\u00e9levage d&rsquo;araign\u00e9es se trouve \u00eatre une entreprise bien trop d\u00e9licate et trop peu rentable. Alors que ces pr\u00e9dateurs pr\u00e9sentent la f\u00e2cheuse tendance \u00e0 s&rsquo;entre-d\u00e9vorer pour prot\u00e9ger leur territoire, comment produire de la soie d&rsquo;araign\u00e9es en quantit\u00e9 industrielle ?<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"533\" class=\"alignnone wp-image-7782 size-full\" src=\"https:\/\/static.africa-press.net\/gabon\/sites\/54\/2022\/08\/postMediaimg_24_1.jpg\" srcset=\"https:\/\/static.africa-press.net\/gabon\/sites\/54\/2022\/08\/postMediaimg_24_1.jpg 1024w, https:\/\/static.africa-press.net\/gabon\/sites\/54\/2022\/08\/postMediaimg_24_1-300x156.jpg 300w, https:\/\/static.africa-press.net\/gabon\/sites\/54\/2022\/08\/postMediaimg_24_1-768x400.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<p>La solution pourrait bien venir de la production de soie synth\u00e9tique et des progr\u00e8s de la transg\u00e9n\u00e8se. Gr\u00e2ce \u00e0 des ch\u00e8vres, des vers \u00e0 soie ou encore \u00e0 des bact\u00e9ries dans lesquels on implante le g\u00e8ne codant pour la production de soie d&rsquo;araign\u00e9e, on peut d\u00e9sormais esp\u00e9rer obtenir enfin le fil tant convoit\u00e9.<\/p>\n<p>L&rsquo;arm\u00e9e am\u00e9ricaine a d&rsquo;ores et d\u00e9j\u00e0 annonc\u00e9 avoir lanc\u00e9 un test grandeur nature sur un gilet pare-balles. Le Dragon Silk &#8211; comprenez Soie de Dragon &#8211; est constitu\u00e9 de fils de soie d&rsquo;araign\u00e9e. Des fils produits par des vers \u00e0 soie g\u00e9n\u00e9tiquement modifi\u00e9s.<\/p>\n<p><strong>Pour plus d&rsquo;informations et d&rsquo;analyses sur la <a href=\"https:\/\/www.africa-press.net\/gabon\">Gabon<\/a>, suivez <a href=\"https:\/\/www.africa-press.net\/\">Africa-Press<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Africa-Press &#8211; Gabon. Bien avant l&rsquo;arriv\u00e9e de Spider-Man, les araign\u00e9es et leurs toiles complexes fascinaient d\u00e9j\u00e0 les Hommes. Fruit de 400 millions d&rsquo;ann\u00e9es d&rsquo;\u00e9volution, la soie des araign\u00e9es est consid\u00e9r\u00e9e comme le saint Graal en mati\u00e8re de performance de fibre. Cinq fois plus r\u00e9sistante que l&rsquo;acier et trois fois plus que le Kevlar &#8211; un [&hellip;]<\/p>\n","protected":false},"author":82,"featured_media":7783,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,11,10],"tags":[36,50,49],"class_list":["post-7784","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-homepage-french","category-toutes-les-actualites","tag-africa-press","tag-africa-press-gabon","tag-gabon"],"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>Biotechnologie : la soie des araign\u00e9es, une fibre tr\u00e8s performante - Gabon<\/title>\n<meta name=\"description\" content=\"Bien avant l&#039;arriv\u00e9e de Spider-Man, les araign\u00e9es et leurs toiles complexes fascinaient d\u00e9j\u00e0 les Hommes. 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