{"id":7290,"date":"2022-12-21T07:39:28","date_gmt":"2022-12-21T07:39:28","guid":{"rendered":"https:\/\/www.lifepronutrition.com\/blog\/general\/la-proteine-de-quoi-est-elle-composee-fonctions-acides-amines-et-valeur-biologique\/"},"modified":"2026-09-16T05:39:47","modified_gmt":"2026-09-16T05:39:47","slug":"la-proteine-de-quoi-est-elle-composee-fonctions-acides-amines-et-valeur-biologique","status":"publish","type":"post","link":"https:\/\/www.lifepronutrition.com\/blog\/fr\/proteines\/la-proteine-de-quoi-est-elle-composee-fonctions-acides-amines-et-valeur-biologique\/","title":{"rendered":"La prot\u00e9ine. De quoi est-elle compos\u00e9e ? Fonctions, acides amin\u00e9s et valeur biologique"},"content":{"rendered":"<h2>Qu\u2019est-ce que la prot\u00e9ine ?<\/h2>\n<p>Les prot\u00e9ines sont des macromol\u00e9cules qui sont form\u00e9es de parties plus petites, appel\u00e9es <strong>acides amin\u00e9s<\/strong>. La principale fonction de la prot\u00e9ine, et donc des acides amin\u00e9s, est la formation des tissus.<\/p>\n<p>Les acides amin\u00e9s sont constitu\u00e9s d\u2019hydrog\u00e8ne, de carbone et d\u2019oxyg\u00e8ne, ainsi que d\u2019azote dans leur groupe amino. De plus, certains types de prot\u00e9ines peuvent contenir des mol\u00e9cules soufr\u00e9es.<\/p>\n<div class=\"tablaproductos\"><table><tr>\n                <td><img decoding=\"async\" alt=\"Life Pro Milk Protein Isolate Micellar 900g\" title=\"Life Pro Milk Protein Isolate Micellar 900g\" src=\"https:\/\/www.lifepronutrition.com\/img\/p\/5\/6\/4\/7\/5647.jpg\" \/><\/td>\n                <td class=\"descri\">\n                        <span class=\"titulo\">LIFE PRO MILK PROTEIN ISOLATE MICELLAR 900G<\/span>\n                        <p class=\"descripcion\">Aislado de case\u00edna micelar nativa Lacprodan\u00ae MicelPure\u2122 (86,6%) de m\u00e1xima pureza. Prote\u00edna de absorci\u00f3n lenta que nutre tus m\u00fasculos durante horas, ideal antes de dormir. Con enzima Tolerase\u00ae L para una digesti\u00f3n c\u00f3moda. Recuperaci\u00f3n prolongada, saciedad duradera.<\/p><\/td>\n                <td><span class=\"precio\">33.42\u20ac <\/span><span class=\"vechi\">37.13\u20ac<\/span><\/td>\n                <td><a target=\"_blank\" title=\"Ver Life Pro Milk Protein Isolate Micellar 900g\" class=\"enviarnews ver_prod\" href=\"https:\/\/www.lifepronutrition.com\/es\/proteina\/life-pro-isolate-micellar-900g.html\">Ver producto<\/a><\/td>\n          <\/tr>\n        <tr>\n                <td><img decoding=\"async\" alt=\"Life Pro Isolate Gourmet Edition 900g\" title=\"Life Pro Isolate Gourmet Edition 900g\" src=\"https:\/\/www.lifepronutrition.com\/img\/p\/4\/5\/1\/6\/4516.jpg\" \/><\/td>\n                <td class=\"descri\">\n                        <span class=\"titulo\">LIFE PRO ISOLATE GOURMET EDITION 900G<\/span>\n                        <p class=\"descripcion\">La nueva Prote\u00edna aislada dise\u00f1ada por Life Pro. Nueva l\u00ednea de sabores gourmet. Elaborada con prote\u00edna de\u00a0suero de leche.<\/p><\/td>\n                <td><span class=\"precio\">44.59\u20ac <\/span><span class=\"vechi\">49.54\u20ac<\/span><\/td>\n                <td><a target=\"_blank\" title=\"Ver Life Pro Isolate Gourmet Edition 900g\" class=\"enviarnews ver_prod\" href=\"https:\/\/www.lifepronutrition.com\/es\/aislados-de-suero\/life-pro-isolate-gourmet-edition-900g.html\">Ver producto<\/a><\/td>\n          <\/tr>\n        <\/table><\/div>\n<h2>La classification des acides amin\u00e9s :<\/h2>\n<p>Parmi l\u2019ensemble des acides amin\u00e9s, il est possible d\u2019\u00e9tablir une premi\u00e8re classification selon qu\u2019ils sont :<\/p>\n<ul>\n<li>Prot\u00e9inog\u00e8nes<\/li>\n<li>Non prot\u00e9inog\u00e8nes<\/li>\n<\/ul>\n<h3><strong>Prot\u00e9inog\u00e8nes :<\/strong><\/h3>\n<p>D\u2019un point de vue nutritionnel, ce sont ceux qui rev\u00eatent le plus d\u2019importance. Ce sont les acides amin\u00e9s que l\u2019on peut \u00e9galement trouver dans les <strong>compl\u00e9ments de BCAAS, MAP ou EEAA<\/strong>.<\/p>\n<p>Les acides amin\u00e9s prot\u00e9inog\u00e8nes sont au nombre de 20. Parmi ces 20 acides amin\u00e9s, on peut \u00e9tablir une classification entre :<\/p>\n<ul>\n<li>Acides amin\u00e9s essentiels : ceux qui ne peuvent pas \u00eatre produits par l\u2019organisme. Ils doivent \u00eatre apport\u00e9s par l\u2019alimentation. Il existe huit acides amin\u00e9s essentiels : la valine, la leucine, l\u2019isoleucine, la thr\u00e9onine, la lysine, la m\u00e9thionine, la ph\u00e9nylalanine et le tryptophane<\/li>\n<li>Acides amin\u00e9s non essentiels, qui peuvent \u00e9galement \u00eatre synth\u00e9tis\u00e9s par l\u2019organisme.<\/li>\n<\/ul>\n<h3><strong>Non prot\u00e9inog\u00e8nes<\/strong><\/h3>\n<p>Ils proviennent du groupe pr\u00e9c\u00e9dent (acides amin\u00e9s prot\u00e9inog\u00e8nes). Ils remplissent des fonctions biologiques.<\/p>\n<p>Leurs principales fonctions sont les suivantes :<\/p>\n<ul>\n<li>La production d\u2019\u00e9nergie.<\/li>\n<li>Ils peuvent contribuer \u00e0 la formation de peptides et d\u2019autres prot\u00e9ines.<\/li>\n<li>La formation d\u2019amines biog\u00e8nes (compos\u00e9s azot\u00e9s pr\u00e9sents dans les aliments et les boissons ferment\u00e9s).<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1790 size-full\" src=\"https:\/\/www.lifepronutrition.com\/blog\/wp-content\/uploads\/2022\/10\/52.jpg\" alt=\"sources de prot\u00e9ines d\u2019origine v\u00e9g\u00e9tale\" width=\"1240\" height=\"550\" srcset=\"https:\/\/www.lifepronutrition.com\/blog\/wp-content\/uploads\/2022\/10\/52.jpg 1240w, https:\/\/www.lifepronutrition.com\/blog\/wp-content\/uploads\/2022\/10\/52-300x133.jpg 300w, https:\/\/www.lifepronutrition.com\/blog\/wp-content\/uploads\/2022\/10\/52-1024x454.jpg 1024w, https:\/\/www.lifepronutrition.com\/blog\/wp-content\/uploads\/2022\/10\/52-768x341.jpg 768w\" sizes=\"auto, (max-width: 1240px) 100vw, 1240px\" \/><\/p>\n<h2>La qualit\u00e9 de la prot\u00e9ine :<\/h2>\n<p>Lors de l\u2019\u00e9valuation et du choix d\u2019une source de prot\u00e9ines, il faut prendre en compte diff\u00e9rents aspects. La qualit\u00e9 d\u2019une prot\u00e9ine fait \u00e9galement r\u00e9f\u00e9rence \u00e0 un indice qui indique le nombre d\u2019acides amin\u00e9s essentiels qu\u2019une source de prot\u00e9ines contient. Pour \u00eatre consid\u00e9r\u00e9e comme une prot\u00e9ine de haute qualit\u00e9, elle devrait en outre contenir les 8 acides amin\u00e9s essentiels que l\u2019organisme ne peut pas synth\u00e9tiser lui-m\u00eame.<\/p>\n<h3><strong>La valeur biologique de la prot\u00e9ine :<\/strong><\/h3>\n<p>La <strong>valeur biologique<\/strong> fait r\u00e9f\u00e9rence \u00e0 la capacit\u00e9 de l\u2019organisme \u00e0 absorber, mais aussi \u00e0 synth\u00e9tiser et \u00e0 utiliser la source de prot\u00e9ines fournie.<\/p>\n<p>En r\u00e8gle g\u00e9n\u00e9rale, on consid\u00e8re que les <strong>aliments d\u2019origine animale<\/strong>, ainsi que les compl\u00e9ments de prot\u00e9ines qui en sont issus, ont une <strong>valeur biologique \u00e9lev\u00e9e<\/strong>. Voici quelques exemples de prot\u00e9ines \u00e0 haute valeur biologique :<\/p>\n<ul>\n<li>Cas\u00e9ine, prot\u00e9ine de lactos\u00e9rum<\/li>\n<li>\u0152uf, diff\u00e9rentes viandes, etc.<\/li>\n<\/ul>\n<p>En revanche, les aliments d\u2019<strong>origine v\u00e9g\u00e9tale<\/strong> sont consid\u00e9r\u00e9s comme n\u2019ayant pas une valeur biologique \u00e9lev\u00e9e car, en g\u00e9n\u00e9ral, ils ne contiennent pas tous les acides amin\u00e9s essentiels dans leur composition, ou en proportions insuffisantes. C\u2019est l\u2019une des raisons pour lesquelles on associe g\u00e9n\u00e9ralement diff\u00e9rentes sources d\u2019origine v\u00e9g\u00e9tale afin d\u2019obtenir une prot\u00e9ine compl\u00e8te.<\/p>\n\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-center kksr-valign-bottom\"\n    data-payload='{&quot;align&quot;:&quot;center&quot;,&quot;id&quot;:&quot;7290&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;bottom&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;0&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;0&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;Valora el articulo&quot;,&quot;legend&quot;:&quot;0\\\/5 - (0 votos)&quot;,&quot;size&quot;:&quot;22&quot;,&quot;width&quot;:&quot;0&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} - ({count} {votes})&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 22px; height: 22px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 22px; height: 22px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 22px; height: 22px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 22px; height: 22px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 22px; height: 22px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 0px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 22px; height: 22px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 22px; height: 22px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 22px; height: 22px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 22px; height: 22px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 22px; height: 22px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 17.6px;\">\n            <span class=\"kksr-muted\">Valora el articulo<\/span>\n    <\/div>\n    <\/div>\n","protected":false},"excerpt":{"rendered":"<p>Qu\u2019est-ce que la prot\u00e9ine ? Les prot\u00e9ines sont des macromol\u00e9cules qui sont form\u00e9es de parties plus petites, appel\u00e9es acides amin\u00e9s. La principale fonction de la prot\u00e9ine, et donc des acides amin\u00e9s, est la formation des &#8230; <a title=\"La prot\u00e9ine. De quoi est-elle compos\u00e9e ? Fonctions, acides amin\u00e9s et valeur biologique\" class=\"read-more\" href=\"https:\/\/www.lifepronutrition.com\/blog\/fr\/proteines\/la-proteine-de-quoi-est-elle-composee-fonctions-acides-amines-et-valeur-biologique\/\" aria-label=\"M\u00e1s en La prot\u00e9ine. De quoi est-elle compos\u00e9e ? Fonctions, acides amin\u00e9s et valeur biologique\">Leer m\u00e1s<\/a><\/p>\n","protected":false},"author":3,"featured_media":1789,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"wprm-recipe-roundup-name":"","wprm-recipe-roundup-description":"","footnotes":""},"categories":[523,514],"tags":[],"ppma_author":[689],"class_list":["post-7290","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-acides-amines","category-proteines","masonry-post","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-33","no-featured-image-padding"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>La prot\u00e9ine. Acides amin\u00e9s et valeur biologique - Blog Life Pro Nutrition<\/title>\n<meta name=\"description\" content=\"La prot\u00e9ine. De quoi est-elle compos\u00e9e ? 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