{"id":2067,"date":"2026-09-02T12:49:11","date_gmt":"2026-09-02T10:49:11","guid":{"rendered":"https:\/\/peptelia.com\/stockage-et-duree-de-conservation\/"},"modified":"2026-10-07T15:13:01","modified_gmt":"2026-10-07T13:13:01","slug":"stockage-et-duree-de-conservation","status":"publish","type":"page","link":"https:\/\/peptelia.com\/fr\/stockage-et-duree-de-conservation\/","title":{"rendered":"Stockage et dur\u00e9e de conservation"},"content":{"rendered":"\n<div class=\"snx-g\">\n  <div class=\"snx-g__hero\">\n    <span class=\"snx-g__eyebrow\">Guide<\/span>\n    <h2 style=\"font-size:clamp(27px,3.6vw,40px);line-height:1.15;margin:0 0 12px;font-weight:800;letter-spacing:.3px;color:#fff\">Stockage et dur\u00e9e de conservation<\/h2>\n    <p>Comment les peptides de recherche restent stables \u2013 de la poudre lyophilis\u00e9e \u00e0 la solution reconstitu\u00e9e.<\/p>\n  <\/div>\n\n  <p class=\"snx-g__lead\">Qu\u2019un peptide reste stable pendant des mois ou perde en qualit\u00e9 en quelques jours d\u00e9pend avant tout d\u2019une chose : le stockage. Ce guide r\u00e9sume ce qui est courant en laboratoire. <\/p>\n\n  <h2>Deux \u00e9tats, deux r\u00e8gles<\/h2>\n  <p>Les peptides sont fournis sous forme <strong>de lyophilisat<\/strong> (poudre lyophilis\u00e9e) et ne sont dissous (reconstitu\u00e9s) dans de l\u2019eau qu\u2019au moment voulu. Ces deux \u00e9tats se comportent de mani\u00e8re totalement diff\u00e9rente \u2013 et ne se conservent pas de la m\u00eame fa\u00e7on. <\/p>\n\n  <h2>Lyophilisat \u2013 la poudre non reconstitu\u00e9e<\/h2>\n  <p>\u00c0 l\u2019\u00e9tat lyophilis\u00e9, les peptides sont remarquablement stables car il y a tr\u00e8s peu d\u2019eau disponible pour les r\u00e9actions de d\u00e9gradation. Trois conditions sont d\u00e9terminantes : au frais, au sec et \u00e0 l\u2019abri de la lumi\u00e8re. <\/p>\n  <ul>\n    <li>\n<strong>\u00c0 court terme<\/strong> (semaines) : un r\u00e9frig\u00e9rateur \u00e0 2\u20138 \u00b0C est g\u00e9n\u00e9ralement suffisant.<\/li>\n    <li>\n<strong>\u00c0 long terme<\/strong> (mois et plus) : la cong\u00e9lation \u00e0 \u221220 \u00b0C ou moins est la pratique courante.<\/li>\n    <li>\n<strong>Gardez au sec :<\/strong> L\u2019humidit\u00e9 est le principal ennemi. N\u2019ouvrez pas le flacon scell\u00e9 dans un environnement humide ; \u00e9vitez la condensation en laissant un flacon froid atteindre la temp\u00e9rature ambiante avant l\u2019ouverture. <\/li>\n    <li>\nConservez <strong>\u00e0 l\u2019\u00e9cart de la lumi\u00e8re<\/strong> dans le contenant d\u2019origine.<\/li>\n  <\/ul>\n\n  <h2>Solution reconstitu\u00e9e \u2013 apr\u00e8s la dissolution<\/h2>\n  <p>D\u00e8s que la poudre est dissoute dans l\u2019eau, la stabilit\u00e9 diminue nettement. \u00c0 partir de ce moment, une r\u00e9frig\u00e9ration constante s\u2019impose. <\/p>\n  <ul>\n    <li>La solution se conserve au r\u00e9frig\u00e9rateur \u00e0 <strong>2\u20138 \u00b0C<\/strong>, et non \u00e0 temp\u00e9rature ambiante.<\/li>\n    <li>\n<strong>Les cong\u00e9lations et d\u00e9cong\u00e9lations r\u00e9p\u00e9t\u00e9es sont \u00e0 \u00e9viter<\/strong> \u2013 chaque cycle sollicite la structure mol\u00e9culaire. En cas de cong\u00e9lation, r\u00e9partissez si possible la solution en portions individuelles. <\/li>\n    <li>Prot\u00e9gez le flacon de la lumi\u00e8re et conservez-le \u00e0 la verticale.<\/li>\n    <li>La dur\u00e9e de conservation \u00e0 l\u2019\u00e9tat dissous est limit\u00e9e et d\u00e9pend du compos\u00e9 \u2013 de quelques jours \u00e0 plusieurs semaines.<\/li>\n  <\/ul>\n\n  <h2>Le r\u00f4le de l\u2019eau<\/h2>\n  <p>Deux types d\u2019eau peuvent servir \u00e0 la reconstitution, et ils diff\u00e8rent nettement :<\/p>\n  <ul>\n    <li>\n<strong>L\u2019eau st\u00e9rile<\/strong> ne contient aucun conservateur. Les solutions ainsi pr\u00e9par\u00e9es ont une dur\u00e9e de conservation tr\u00e8s courte. <\/li>\n    <li>\n<strong>L\u2019eau bact\u00e9riostatique (BAC)<\/strong> contient 0,9 % d\u2019alcool benzylique, ce qui inhibe la croissance des germes. Elle prolonge consid\u00e9rablement la dur\u00e9e de conservation de la solution et est la m\u00e9thode habituelle en laboratoire. L\u2019eau bact\u00e9riostatique est disponible aupr\u00e8s des fournisseurs de mat\u00e9riel de laboratoire.  <\/li>\n  <\/ul>\n\n  <h2>Compos\u00e9s photosensibles<\/h2>\n  <p>Certains compos\u00e9s sont \u00e9galement sensibles \u00e0 la lumi\u00e8re. Le <strong>GHK-Cu<\/strong>, par exemple, est un peptide de cuivre dont la couleur bleu-vert sert aussi d\u2019indicateur de fra\u00eecheur : si elle s\u2019estompe, le cuivre s\u2019est dissoci\u00e9. Ces compos\u00e9s se conservent syst\u00e9matiquement dans leur flacon d\u2019origine, \u00e0 l\u2019abri de la lumi\u00e8re. <\/p>\n\n  <h2>Rep\u00e8res en un coup d\u2019\u0153il<\/h2>\n  <table>\n    <thead><tr>\n<th>\u00c9tat<\/th>\n <th>Temp\u00e9rature<\/th>\n <th>Lumi\u00e8re<\/th>\n <th>Conservation (valeur indicative)<\/th>\n<\/tr><\/thead>\n    <tbody>\n      <tr>\n<td>Lyophilisat, \u00e0 court terme<\/td>\n <td>2\u20138 \u00b0C<\/td>\n <td>\u00e0 l\u2019abri<\/td>\n <td>Semaines<\/td>\n<\/tr>\n      <tr>\n<td>Lyophilisat, \u00e0 long terme<\/td>\n <td>\u221220 \u00b0C ou plus froid<\/td>\n <td>\u00e0 l\u2019abri<\/td>\n <td>Plusieurs mois et plus<\/td>\n<\/tr>\n      <tr>\n<td>Reconstitu\u00e9 (BAC)<\/td>\n <td>2\u20138 \u00b0C<\/td>\n <td>\u00e0 l\u2019abri<\/td>\n <td>Jours \u00e0 semaines<\/td>\n<\/tr>\n      <tr>\n<td>Reconstitu\u00e9 (st\u00e9rile)<\/td>\n <td>2\u20138 \u00b0C<\/td>\n <td>\u00e0 l\u2019abri<\/td>\n <td>tr\u00e8s court<\/td>\n<\/tr>\n    <\/tbody>\n  <\/table>\n  <p>Ces valeurs sont indicatives et varient selon le compos\u00e9. La fiche technique propre au lot fait toujours foi. <\/p>\n\n  <div class=\"snx-g__band\">\n    <h2>Bien calculer avant de pr\u00e9parer<\/h2>\n    <p>Avant de pr\u00e9parer une solution, un coup d\u2019\u0153il au calculateur s\u2019impose : il indique la concentration obtenue \u00e0 partir du contenu du flacon et du volume de solution \u2013 et le nombre de pr\u00e9l\u00e8vements possibles par flacon.<\/p>\n    <a class=\"snx-g__cta\" href=\"https:\/\/peptelia.com\/fr\/calculatrice-de-peptides\/\">Ouvrir le calculateur de peptides<\/a>\n  <\/div>\n<p class=\"snx-g__note\">Toutes les informations fournies sont uniquement \u00e0 des fins g\u00e9n\u00e9rales, scientifiques et de recherche. Les produits propos\u00e9s par Pept\u00e9lia ne sont pas destin\u00e9s \u00e0 la consommation humaine ou animale. Cette page ne constitue pas un manuel d\u2019instructions pour l\u2019utilisation, une recommandation de dosage ou un avis m\u00e9dical. Si vous avez des questions de sant\u00e9, veuillez consulter un professionnel m\u00e9dical ou pharmaceutique.   <\/p>\n\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Guide Stockage et dur\u00e9e de conservation Comment les peptides de recherche restent stables \u2013 de la poudre lyophilis\u00e9e \u00e0 la solution reconstitu\u00e9e. Qu\u2019un peptide reste stable pendant des mois ou [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_templately_pack_id":"","_templately_imported_at":"","_templately_source":"","_templately_import_session_id":"","footnotes":""},"class_list":["post-2067","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Stockage et conservation des peptides | Pept\u00e9lia<\/title>\n<meta name=\"description\" content=\"Bien conserver les peptides : lyophilisat ou solution reconstitu\u00e9e, temp\u00e9rature, protection contre la lumi\u00e8re, eau bact\u00e9riostatique et dur\u00e9es de conservation.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/peptelia.com\/fr\/stockage-et-duree-de-conservation\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Stockage et conservation des peptides | Pept\u00e9lia\" \/>\n<meta property=\"og:description\" content=\"Bien conserver les peptides : lyophilisat ou solution reconstitu\u00e9e, temp\u00e9rature, protection contre la lumi\u00e8re, eau bact\u00e9riostatique et dur\u00e9es de conservation.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/peptelia.com\/fr\/stockage-et-duree-de-conservation\/\" \/>\n<meta property=\"og:site_name\" content=\"Pept\u00e9lia\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-07T13:13:01+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/peptelia.com\/wp-content\/uploads\/2026\/09\/1788622460717_Researcher-storing-peptide-samples-in-freezer.jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/peptelia.com\\\/fr\\\/stockage-et-duree-de-conservation\\\/\",\"url\":\"https:\\\/\\\/peptelia.com\\\/fr\\\/stockage-et-duree-de-conservation\\\/\",\"name\":\"Stockage et conservation des peptides | Pept\u00e9lia\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/peptelia.com\\\/fr\\\/#website\"},\"datePublished\":\"2026-09-02T10:49:11+00:00\",\"dateModified\":\"2026-10-07T13:13:01+00:00\",\"description\":\"Bien conserver les peptides : lyophilisat ou solution reconstitu\u00e9e, temp\u00e9rature, protection contre la lumi\u00e8re, eau bact\u00e9riostatique et dur\u00e9es de conservation.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/peptelia.com\\\/fr\\\/stockage-et-duree-de-conservation\\\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/peptelia.com\\\/fr\\\/stockage-et-duree-de-conservation\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/peptelia.com\\\/fr\\\/stockage-et-duree-de-conservation\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Start\",\"item\":\"https:\\\/\\\/peptelia.com\\\/fr\\\/achetez-des-peptides-de-recherche-chaque-lot-teste-par-coa\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Stockage et dur\u00e9e de conservation\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/peptelia.com\\\/fr\\\/#website\",\"url\":\"https:\\\/\\\/peptelia.com\\\/fr\\\/\",\"name\":\"Pept\u00e9lia\",\"description\":\"Peptide GLP-1, GLP-2 &amp; 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