{"id":7047,"date":"2023-02-10T10:43:05","date_gmt":"2023-02-10T09:43:05","guid":{"rendered":"https:\/\/www.hdebalzac.fr\/?p=7047"},"modified":"2023-02-10T10:43:07","modified_gmt":"2023-02-10T09:43:07","slug":"analyser-des-pommes-en-2nde-pro-laboratoire","status":"publish","type":"post","link":"https:\/\/www.hdebalzac.fr\/index.php\/2023\/02\/10\/analyser-des-pommes-en-2nde-pro-laboratoire\/","title":{"rendered":"Analyser des pommes en 2nde Pro. Laboratoire"},"content":{"rendered":"\n<p class=\"has-medium-font-size wp-block-paragraph\">Les \u00e9l\u00e8ves de 2nde professionnelle Laboratoire Contr\u00f4le Qualit\u00e9 analysent les pommes, les transforment et produisent du jus de pomme lors de ces travaux pratiques renforc\u00e9s.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Les caract\u00e9ristiques vari\u00e9tales et les propri\u00e9t\u00e9s nutritionnelles et technologiques d&rsquo;une pomme d\u00e9pendent de sa composition chimique.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\"><strong>Des tests physico-chimiques.<\/strong><\/h1>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Les laborantin-e-s r\u00e9alisent des tests simples qui mettent en \u00e9vidence quelques substances chimiques pr\u00e9sentes dans la pomme.<\/p>\n\n\n\n<h2 class=\"has-medium-font-size wp-block-heading\">Test de reconnaissance de l&rsquo;eau et acidit\u00e9.<\/h2>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Le sulfate de cuivre anhydre bleuit au contact de l&rsquo;eau.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2023\/01\/Pommes-Eau-Acides-1024x1024.jpg\" alt=\"\" class=\"wp-image-7057\" srcset=\"https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2023\/01\/Pommes-Eau-Acides-1024x1024.jpg 1024w, https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2023\/01\/Pommes-Eau-Acides-300x300.jpg 300w, https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2023\/01\/Pommes-Eau-Acides-150x150.jpg 150w, https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2023\/01\/Pommes-Eau-Acides-768x768.jpg 768w, https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2023\/01\/Pommes-Eau-Acides-1536x1536.jpg 1536w, https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2023\/01\/Pommes-Eau-Acides-2048x2048.jpg 2048w, https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2023\/01\/Pommes-Eau-Acides-600x600.jpg 600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Le papier indicateur change de couleur selon le pH.<\/p>\n\n\n\n<h2 class=\"has-medium-font-size wp-block-heading\">Mise en \u00e9vidence des sucres.<\/h2>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">La liqueur de Fehling forme, \u00e0 chaud, un pr\u00e9cipit\u00e9 rouge brique avec des sucres r\u00e9ducteurs.<\/p>\n\n\n\n<figure class=\"wp-block-video\"><video height=\"1440\" style=\"aspect-ratio: 1440 \/ 1440;\" width=\"1440\" controls src=\"https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2023\/01\/Pommes-Sucres.mp4\"><\/video><\/figure>\n\n\n\n<h2 class=\"has-medium-font-size wp-block-heading\">Recherche de l&rsquo;amidon.<\/h2>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">L&rsquo;eau iod\u00e9e devient bleue-noire en pr\u00e9sence d&rsquo;amidon.<\/p>\n\n\n\n<figure class=\"wp-block-video\"><video height=\"1440\" style=\"aspect-ratio: 1440 \/ 1440;\" width=\"1440\" controls src=\"https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2023\/01\/Pommes-Amidon.mp4\"><\/video><\/figure>\n\n\n\n<h1 class=\"wp-block-heading\"><strong>Une d\u00e9licieuse compot\u00e9e.<\/strong><\/h1>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Pour valoriser les pommes, les \u00e9l\u00e8ves pr\u00e9parent puis &#8230; savourent une compot\u00e9e !<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2023\/01\/Pommes-Compotee-1024x1024.jpg\" alt=\"\" class=\"wp-image-7062\" srcset=\"https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2023\/01\/Pommes-Compotee-1024x1024.jpg 1024w, https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2023\/01\/Pommes-Compotee-300x300.jpg 300w, https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2023\/01\/Pommes-Compotee-150x150.jpg 150w, https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2023\/01\/Pommes-Compotee-768x768.jpg 768w, https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2023\/01\/Pommes-Compotee-1536x1536.jpg 1536w, https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2023\/01\/Pommes-Compotee-2048x2048.jpg 2048w, https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2023\/01\/Pommes-Compotee-600x600.jpg 600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Les \u00e9l\u00e8ves de 2nde professionnelle Laboratoire Contr\u00f4le Qualit\u00e9 analysent les pommes, les transforment et produisent du jus de pomme lors de ces travaux pratiques renforc\u00e9s. Les caract\u00e9ristiques vari\u00e9tales et les 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