{"id":996,"date":"2017-04-25T07:23:34","date_gmt":"2017-04-25T06:23:34","guid":{"rendered":"https:\/\/academy.pittmanseafoods.com\/?p=996\/"},"modified":"2017-04-25T07:23:34","modified_gmt":"2017-04-25T06:23:34","slug":"pourquoi-le-saumon-est-il-rose","status":"publish","type":"post","link":"https:\/\/academy.pittmanseafoods.com\/fr\/2017\/04\/pourquoi-le-saumon-est-il-rose\/","title":{"rendered":"Pourquoi le saumon est-il rose ?"},"content":{"rendered":"<p><strong>La chair de tous les saumons, quelle que soit leur origine (sauvage ou d&rsquo;\u00e9levage) est de couleur rose car le saumon consomme un antioxydant, le carot\u00e9no\u00efde, qui provient de son alimentation.\u00a0<\/strong><\/p>\n<p>Les carot\u00e9no\u00efdes sont un groupe de pigments d&rsquo;origine naturelle qui transmettent leur couleur aux tissus de plusieurs organismes. Plus de 600 carot\u00e9no\u00efdes naturels ont \u00e9t\u00e9 identifi\u00e9s chez les plantes et les animaux, allant des tomates aux flamants rose. Ils donnent m\u00eame leur couleur automnale aux feuilles.<\/p>\n<p><!--more--><\/p>\n<p><strong>BIENFAITS DES CAROT\u00c9NO\u00cfDES<\/strong><\/p>\n<p>Les carot\u00e9no\u00efdes que l&rsquo;on trouve dans les poissons font partie d&rsquo;un groupe connu sous le nom de xanthophylles et incluent l&rsquo;astaxanthine. Cette derni\u00e8re est le principal carot\u00e9no\u00efde que l&rsquo;on trouve naturellement chez les saumons sauvages et les crustac\u00e9s tels que les crevettes et les homards, et qui leur donne leur pigmentation rose-rouge.<\/p>\n<p>Il a \u00e9galement \u00e9t\u00e9 d\u00e9montr\u00e9 que les r\u00e9gimes alimentaires contenant des carot\u00e9no\u00efdes augmentent le taux de croissance et la survie des poissons juv\u00e9niles, aussi bien dans les aliments de d\u00e9marrage qu&rsquo;au stade juv\u00e9nile.<\/p>\n<p><strong>CHA\u00ceNE ALIMENTAIRE<\/strong><\/p>\n<p>L&rsquo;astaxanthine est produite par des micro-organismes tels que la levure et les algues. Ces substances sont ing\u00e9r\u00e9es par des petits poissons et crustac\u00e9s, qui sont \u00e0 leur tour mang\u00e9s par des saumons.\u00a0C&rsquo;est lorsque les saumons et les crustac\u00e9s mangent ces plus petits poissons et crustac\u00e9s qu&rsquo;ils accumulent des niveaux suffisants de carot\u00e9no\u00efde, lequel se d\u00e9pose dans leurs muscles mais aussi dans leur peau et leurs \u0153ufs, pour changer de couleur.<\/p>\n<p><strong>SAUMON D&rsquo;\u00c9LEVAGE<\/strong><\/p>\n<p>La pratique courante veut que les pigments synth\u00e9tis\u00e9s soient fr\u00e9quemment utilis\u00e9s dans divers aliments pour animaux, y compris dans les aliments pour poissons d&rsquo;\u00e9levage. En cas d&rsquo;\u00e9laboration d&rsquo;aliments biologiques, le pigment est d\u00e9riv\u00e9 d&rsquo;une bact\u00e9rie.<\/p>\n<p>\u00c9tant donn\u00e9 que les saumons ne peuvent pas produire leur propre astaxanthine et doivent en consommer dans le cadre de leur alimentation, la norme a consist\u00e9, pendant de nombreuses ann\u00e9es, \u00e0 nourrir les saumons \u00e9lev\u00e9s en eau de mer avec des aliments contenant de l&rsquo;astaxanthine identique \u00e0 la substance naturelle. Cela signifie que bien que l&rsquo;astaxanthine soit synth\u00e9tis\u00e9e, c&rsquo;est une version pure de ce que mangent les saumons sauvages qui offre au poisson des bienfaits pour sa sant\u00e9 et lui donne cette coloration famili\u00e8re qui s\u00e9duit les consommateurs finaux du monde entier.<\/p>\n<p>\u00c0 noter toutefois que des r\u00e9glementations de longue date concernant les additifs alimentaires stipulent qu&rsquo;il est interdit de donner de l&rsquo;astaxanthine synth\u00e9tique aux salmonid\u00e9s au cours des six premiers mois de leur vie.<\/p>\n<p><strong>IMPORTANCE DES PIGMENTS <\/strong><\/p>\n<p>Qu&rsquo;elle soit obtenue naturellement ou synth\u00e9tis\u00e9e sous une forme identique \u00e0 la forme naturelle, l&rsquo;astaxanthine est \u00e9galement un antioxydant et un pr\u00e9curseur de la vitamine A. Ces deux fonctions contribuent \u00e0 prot\u00e9ger les tissus des dommages oxydatifs, \u00e0 renforcer le syst\u00e8me immunitaire et \u00e0 am\u00e9liorer la fertilit\u00e9 et la croissance.<\/p>\n<p>Tandis que les saumons femelles se pr\u00e9parent \u00e0 se reproduire, les xanthophylles sont achemin\u00e9es vers les ovaires o\u00f9 elles am\u00e9liorent le taux de maturation des ovocytes (\u0153ufs\/ovules). Les pigments int\u00e8grent alors le sac vitellin.<\/p>\n<p>Lors de la ponte des \u0153ufs, les pigments rev\u00eatent deux autres fonctions : celle de prot\u00e9ger les \u0153ufs contre les d\u00e9g\u00e2ts caus\u00e9s par la lumi\u00e8re et celle d&rsquo;aider le m\u00e2le \u00e0 les trouver.<\/p>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>La chair de tous les saumons, quelle que soit leur origine (sauvage ou d&rsquo;\u00e9levage) est de couleur rose car le saumon consomme un antioxydant, le carot\u00e9no\u00efde, qui provient de son alimentation.\u00a0 Les carot\u00e9no\u00efdes sont un groupe de pigments d&rsquo;origine naturelle qui transmettent leur couleur aux tissus de plusieurs organismes. Plus de 600 carot\u00e9no\u00efdes naturels ont [&hellip;]<!-- AddThis Advanced Settings generic via filter on get_the_excerpt --><!-- AddThis Share Buttons generic via filter on get_the_excerpt --><\/p>\n","protected":false},"author":7,"featured_media":990,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-996","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-geen-categorie-fr"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Pourquoi le saumon est-il rose ? - Pittman Seafoods<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/academy.pittmanseafoods.com\/fr\/2017\/04\/pourquoi-le-saumon-est-il-rose\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pourquoi le saumon est-il rose ? - Pittman Seafoods\" \/>\n<meta property=\"og:description\" content=\"La chair de tous les saumons, quelle que soit leur origine (sauvage ou d&rsquo;\u00e9levage) est de couleur rose car le saumon consomme un antioxydant, le carot\u00e9no\u00efde, qui provient de son alimentation.\u00a0 Les carot\u00e9no\u00efdes sont un groupe de pigments d&rsquo;origine naturelle qui transmettent leur couleur aux tissus de plusieurs organismes. 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