{"id":7116,"date":"2023-03-27T12:00:32","date_gmt":"2023-03-27T10:00:32","guid":{"rendered":"https:\/\/www.hdebalzac.fr\/?p=7116"},"modified":"2023-03-27T12:00:33","modified_gmt":"2023-03-27T10:00:33","slug":"analyser-la-vitamine-c-des-comprimes-fabriques-en-2nde-pro-laboratoire","status":"publish","type":"post","link":"https:\/\/www.hdebalzac.fr\/index.php\/2023\/03\/27\/analyser-la-vitamine-c-des-comprimes-fabriques-en-2nde-pro-laboratoire\/","title":{"rendered":"Analyser la vitamine C des comprim\u00e9s fabriqu\u00e9s en 2nde Pro. Laboratoire"},"content":{"rendered":"\n<p class=\"has-medium-font-size wp-block-paragraph\">Les \u00e9l\u00e8ves de seconde professionnelle Laboratoire Contr\u00f4le Qualit\u00e9 fabriquent et contr\u00f4lent des comprim\u00e9s vitamin\u00e9s lors de ces travaux pratiques renforc\u00e9s.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\"><strong>Un m\u00e9lange de poudres.<\/strong><\/h1>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Les comprim\u00e9s sont fabriqu\u00e9s \u00e0 partir d&rsquo;un m\u00e9lange de poudres&nbsp;; cellulose, st\u00e9arate de magn\u00e9sium et vitamine C.<\/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\/02\/Comprimes-Melange.mp4\"><\/video><figcaption class=\"wp-element-caption\"><em>M\u00e9lange des poudres et pr\u00e9l\u00e8vement.<\/em><\/figcaption><\/figure>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Lors de cette op\u00e9ration, les laborantin-e-s pr\u00e9l\u00e8vent un \u00e9chantillon en trois points du m\u00e9langeur cubique afin de l&rsquo;analyser.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Les <strong>analyses de la vitamine C.<\/strong><\/h1>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Pour assurer le suivi qualit\u00e9 de fabrication, deux contr\u00f4les chimiques sont r\u00e9alis\u00e9s  ; <\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">   &#8211; la caract\u00e9risation de la vitamine C puis,<\/p>\n\n\n\n<p class=\"has-text-align-left has-medium-font-size wp-block-paragraph\">   &#8211; l&rsquo;homog\u00e9n\u00e9it\u00e9 du m\u00e9lange.<\/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\/02\/Comprimes-Vitamine-C.mp4\"><\/video><figcaption class=\"wp-element-caption\"><em>Pr\u00e9l\u00e8vement, mod\u00e8le mol\u00e9culaire et caract\u00e9risation de la vitamine C .<\/em><\/figcaption><\/figure>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Ces analyses se basent sur les propri\u00e9t\u00e9s acides et r\u00e9ductrices de la vitamine C.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Des techniques de laboratoire.<\/h1>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Les laborantin-e-s mettent en \u0153uvre les techniques courantes de pr\u00e9paration et d&rsquo;analyse telles que la pes\u00e9e, la dissolution, la dilution, le pr\u00e9l\u00e8vement, l&rsquo;\u00e9chantillonnage et le dosage.<\/p>\n\n\n\n<figure class=\"wp-block-video\"><video height=\"1920\" style=\"aspect-ratio: 1080 \/ 1920;\" width=\"1080\" controls src=\"https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2023\/02\/Comprimes-Techniques.mp4\"><\/video><figcaption class=\"wp-element-caption\"><em>Les techniques de pr\u00e9paration.<\/em><\/figcaption><\/figure>\n\n\n\n<h1 class=\"wp-block-heading\">Le dosage de la vitamine C.<\/h1>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Les laborantin-e-s dosent la concentration en vitamine C de l&rsquo;\u00e9chantillon par du DCPIP (dichloroph\u00e9nolindoph\u00e9nol).<\/p>\n\n\n\n<figure class=\"wp-block-video\"><video height=\"1920\" style=\"aspect-ratio: 1080 \/ 1920;\" width=\"1080\" controls src=\"https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2023\/02\/Comprimes-Dosage-vitamine-C.mp4\"><\/video><figcaption class=\"wp-element-caption\"><em>Dosage d&rsquo;oxydor\u00e9duction de la vitamine C.<\/em><\/figcaption><\/figure>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">La teneur en vitamine C de l&rsquo;\u00e9chantillon (80 mg \/g) et l&rsquo;homog\u00e9n\u00e9it\u00e9 du m\u00e9lange sont valid\u00e9es pour passer \u00e0 l&rsquo;\u00e9tape suivante de la fabrication : la compression des poudres.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Les \u00e9l\u00e8ves de seconde professionnelle Laboratoire Contr\u00f4le Qualit\u00e9 fabriquent et contr\u00f4lent des comprim\u00e9s vitamin\u00e9s lors de ces travaux pratiques renforc\u00e9s. Un m\u00e9lange de poudres. Les comprim\u00e9s sont fabriqu\u00e9s \u00e0 partir [&hellip;]<\/p>\n","protected":false},"author":19,"featured_media":7160,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"0","ocean_second_sidebar":"0","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"0","ocean_custom_header_template":"0","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"0","ocean_menu_typo_font_family":"0","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"0","omw_enable_modal_window":"enable","ocean_post_oembed":"","ocean_post_self_hosted_media":"","ocean_post_video_embed":"","ocean_link_format":"","ocean_link_format_target":"self","ocean_quote_format":"","ocean_quote_format_link":"post","ocean_gallery_link_images":"off","ocean_gallery_id":[],"footnotes":""},"categories":[3],"tags":[39,35],"class_list":["post-7116","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-formation","tag-laboratoires","tag-tpr","entry","has-media"],"jetpack_featured_media_url":"https:\/\/www.hdebalzac.fr\/wp-content\/uploads\/2023\/02\/Comprimes-Prelevement-vitamine-C-scaled.jpg","views":"","publishpress_future_action":{"enabled":false,"date":"2026-06-01 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