{"id":5742,"date":"2026-02-13T15:17:00","date_gmt":"2026-02-13T20:17:00","guid":{"rendered":"https:\/\/dev26.lecowebtest.com\/news\/\/"},"modified":"2026-06-19T08:58:16","modified_gmt":"2026-06-19T12:58:16","slug":"la-saint-valentin-et-la-chimie-analytique","status":"publish","type":"post","link":"https:\/\/www.leco.com\/fr\/news\/valentines-day-and-analytical-chemistry\/","title":{"rendered":"Cette Saint-Valentin, nous mettons la chimie analytique \u00e0 l'honneur"},"content":{"rendered":"<div class=\"wp-block-group is-style-leco-vertical-margin-top has-global-padding is-layout-constrained wp-container-core-group-is-layout-8a813746 wp-block-group-is-layout-constrained\" style=\"margin-top:0\">\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-1ffe0ea6 wp-block-group-is-layout-flex\">\n<p class=\"wp-block-paragraph\">Publi\u00e9 le<\/p>\n\n\n<div style=\"line-height:1;margin-top:12px;margin-left:6px\" class=\"wp-block-post-date has-custom-1-font-size\"><time datetime=\"2026-05-28T12:55:59.646Z\">28 mai 2026<\/time><\/div><\/div>\n\n\n<h1 class=\"is-style-default wp-block-post-title\">Cette Saint-Valentin, nous mettons la chimie analytique \u00e0 l'honneur<\/h1><\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<figure class=\"wp-block-image size-large is-style-rounded-full-width\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/06\/Web-Blog-Image-Valentines-Day-1024x512.png\" alt=\"Table de la Saint-Valentin \u00ab LECO \u00bb\" class=\"wp-image-5743\" srcset=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/06\/Web-Blog-Image-Valentines-Day-1024x512.png 1024w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/06\/Web-Blog-Image-Valentines-Day-300x150.png 300w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/06\/Web-Blog-Image-Valentines-Day-768x384.png 768w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/06\/Web-Blog-Image-Valentines-Day-18x9.png 18w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/06\/Web-Blog-Image-Valentines-Day.png 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-container-core-group-is-layout-1ea9787f wp-block-group-is-layout-constrained\" style=\"margin-top:48px\">\n<div class=\"leco-share-article align-left wp-block-create-block-leco-share-article\">\n\t<div class=\"share-article-wrapper\">\n\t\t<button class=\"share-article-button\" data-url=\"https:\/\/www.leco.com\/fr\/news\/valentines-day-and-analytical-chemistry\/\" aria-label=\"Partager l&#039;article\">\n\t\t\tPartager l'article\t\t<\/button>\n\t\t<span class=\"share-article-copied\" aria-live=\"polite\" aria-atomic=\"true\">\n\t\t\tLien de l'article copi\u00e9\t\t<\/span>\n\t<\/div>\n<\/div>\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0\">\n<hr class=\"wp-block-separator has-text-color has-sl-1-color has-alpha-channel-opacity has-sl-1-background-color has-background has-base-100-color has-base-100-background-color is-style-default\" style=\"margin-top:60px;margin-bottom:60px\">\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-container-core-group-is-layout-1ea9787f wp-block-group-is-layout-constrained\" style=\"margin-top:48px\">\n<p class=\"wp-block-paragraph\">Roses, vin, chocolats, parfum, maquillage, fromage, pain : la table de la Saint-Valentin pr\u00e9sent\u00e9e ci-dessous regorge de plaisirs sensoriels. C'est aussi un condens\u00e9 de chimie : profils aromatiques complexes, questions d'authenticit\u00e9 et n\u00e9cessit\u00e9 ponctuelle de d\u00e9tecter des compos\u00e9s ind\u00e9sirables. Gr\u00e2ce aux flux de travail analytiques appropri\u00e9s, ces produits du quotidien peuvent r\u00e9v\u00e9ler des donn\u00e9es claires et exploitables.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nous esp\u00e9rons que vous appr\u00e9cierez notre menu de la Saint-Valentin, qui regorge d&#x27;exemples concrets analys\u00e9s par les instruments LECO :<\/p>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0\">\n<hr class=\"wp-block-separator has-text-color has-sl-1-color has-alpha-channel-opacity has-sl-1-background-color has-background has-base-100-color has-base-100-background-color is-style-default\" style=\"margin-top:60px;margin-bottom:60px\">\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading is-style-h2-style\">Chocolats et liqueurs de chocolat<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Pourquoi l'ar\u00f4me est si complexe (et comment le mesurer)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Le chocolat est l'une des friandises les plus riches en chimie qui soient. Son ar\u00f4me d\u00e9pend de l'origine du cacao et des \u00e9tapes de transformation telles que la fermentation et la torr\u00e9faction, qui fa\u00e7onnent toutes le profil volatil que vos papilles per\u00e7oivent comme \u201c noisette \u201d, \u201c torr\u00e9fi\u00e9 \u201d, \u201c fruit\u00e9 \u201d, \u201c floral \u201d ou \u201c \u00e9pic\u00e9 \u201d.\u201d<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Le d\u00e9fi analytique : La co\u00e9lution<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">La fraction volatile du cacao peut comprendre des centaines de compos\u00e9s r\u00e9partis dans de nombreuses classes chimiques et sur une large gamme de concentrations. Cette complexit\u00e9 augmente la probabilit\u00e9 d'une co\u00e9lution en GC monodimensionnelle, o\u00f9 des contributeurs importants peuvent \u00eatre masqu\u00e9s. L'objectif n'est pas simplement d'obtenir plus de pics, mais une meilleure s\u00e9paration et une identification certaine des compos\u00e9s qui d\u00e9terminent la perception sensorielle.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Un workflow LECO pour le cacao et le chocolat \u00e0 l&#x27;aide de la m\u00e9thode GCxGC<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Dans notre note d'application, \u201c<a href=\"https:\/\/www.leco.com\/fr\/documents\/203-821-718\/\" data-type=\"document\" data-id=\"1855\">Comparaison entre Cocoa et Pegasus BTX 4D &amp; Sync 2D<\/a>\u201cles \u00e9chantillons de liqueur de cacao de diff\u00e9rentes origines g\u00e9ographiques sont caract\u00e9ris\u00e9s par chromatographie en phase gazeuse bidimensionnelle comprehensive coupl\u00e9e \u00e0 la spectrom\u00e9trie de masse \u00e0 temps de vol (GCxGC-TOFMS). Deux approches d'\u00e9chantillonnage sont compar\u00e9es \u2014 l'espace de t\u00eate statique (SHS) et la microextraction sur phase solide en espace de t\u00eate (HS-SPME) \u2014 afin d'\u00e9valuer l'efficacit\u00e9 d'extraction et les empreintes digitales volatiles obtenues.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ce proc\u00e9d\u00e9 combine la technique HS-SPME avec la GCxGC-TOFMS pour s\u00e9parer et d\u00e9tecter les compos\u00e9s volatils du cacao, puis utilise le logiciel avanc\u00e9 de LECO,\u00a0<a href=\"https:\/\/www.leco.com\/fr\/instrument\/alignement-des-donnees-chromatof-sync\/\" data-type=\"instrument\" data-id=\"2711\">ChromaTOF Sync 2D<\/a>, pour le traitement et l'alignement des donn\u00e9es, permettant une comparaison rationalis\u00e9e entre plusieurs \u00e9chantillons (alignement, recherche dans les biblioth\u00e8ques et comparaison multivari\u00e9e\/statistique).<\/p>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h4 class=\"wp-block-heading\">Instruments et outils utilis\u00e9s pour la r\u00e9ussite<\/h4>\n\n\n\n<div class=\"leco-card-grid-block wp-block-create-block-leco-card-grid\">\n\t<div class=\"leco-card-grid columns-3\" role=\"list\" aria-label=\"Card grid\">\n\t\t\n\t\t\t\t\t<a href=\"https:\/\/www.leco.com\/fr\/instrument\/gc-tofms-de-paillasse\/\" class=\"leco-card\" role=\"listitem\" aria-label=\"Pegasus BTX Series - Click to learn more\">\n\t\t\n\t\t\t<!-- Card Image -->\n\t\t\t<div class=\"leco-card-image\" role=\"img\" aria-label=\"Syst\u00e8me GC-MS LECO Pegasus BTX avec chargeur automatique\">\n\t\t\t\t\t\t\t\t\t<img src=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-btx-gc-ms-with-autoloader.webp\" srcset=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-btx-gc-ms-with-autoloader-1024x576.webp 1024w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-btx-gc-ms-with-autoloader-768x432.webp 768w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-btx-gc-ms-with-autoloader-300x169.webp 300w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-btx-gc-ms-with-autoloader.webp 1280w\" sizes=\"(max-width: 768px) 100vw, (max-width: 1200px) 50vw, 371px\" alt=\"Syst\u00e8me GC-MS LECO Pegasus BTX avec chargeur automatique\" class=\"leco-card-img\" loading=\"lazy\" decoding=\"sync\">\n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t<!-- Card Content -->\n\t\t\t<div class=\"leco-card-content\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"leco-card-title\">\n\t\t\t\t\t\tS\u00e9rie Pegasus BTX\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t<div class=\"leco-card-bottom\">\n\t\t\t\t\t\t\t\t\t\t\t<p class=\"leco-card-description\">\n\t\t\t\t\t\t\tSpectrom\u00e8tre de masse \u00e0 temps de vol \u00e0 haute sensibilit\u00e9\t\t\t\t\t\t<\/p>\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"leco-card-link\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t<svg class=\"leco-card-arrow\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"44\" height=\"44\" viewbox=\"0 0 44 44\" fill=\"none\" focusable=\"false\">\n\t\t\t\t\t\t\t\t<path d=\"M12.7998 22C12.7998 22.5523 13.2475 23 13.7998 23L27.3857 23L21.7998 28.5859C21.4093 28.9764 21.4093 29.6095 21.7998 30C22.1903 30.3905 22.8234 30.3905 23.2139 30L30.5068 22.7071C30.8973 22.3166 30.8973 21.6834 30.5068 21.2929L23.2139 14C22.8234 13.6095 22.1903 13.6095 21.7998 14C21.4093 14.3905 21.4093 15.0236 21.7998 15.4141L27.3857 21L13.7998 21C13.2475 21 12.7998 21.4477 12.7998 22Z\" fill=\"#78543D\"><\/path>\n\t\t\t\t\t\t\t<\/svg>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\n\t\t\t\t\t<\/a>\n\t\t\n\t\t\n\t\t\t\t\t<a href=\"https:\/\/www.leco.com\/fr\/instrument\/solutions-de-modulation-gcxgc\/\" class=\"leco-card\" role=\"listitem\" aria-label=\"GCxGC Modulation Solutions - Click to learn more\">\n\t\t\n\t\t\t<!-- Card Image -->\n\t\t\t<div class=\"leco-card-image\" role=\"img\" aria-label=\"GCMS LECO QuadJet SD avec d\u00e9tecteur FID\">\n\t\t\t\t\t\t\t\t\t<img src=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/01\/leco-quadjet-entire-system.webp\" srcset=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/01\/leco-quadjet-entire-system-1024x576.webp 1024w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/01\/leco-quadjet-entire-system-768x432.webp 768w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/01\/leco-quadjet-entire-system-300x169.webp 300w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/01\/leco-quadjet-entire-system.webp 1280w\" sizes=\"(max-width: 768px) 100vw, (max-width: 1200px) 50vw, 371px\" alt=\"GCMS LECO QuadJet SD avec d\u00e9tecteur FID\" class=\"leco-card-img\" loading=\"lazy\" decoding=\"sync\">\n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t<!-- Card Content -->\n\t\t\t<div class=\"leco-card-content\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"leco-card-title\">\n\t\t\t\t\t\tSolutions de Modulation GCxGC\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t<div class=\"leco-card-bottom\">\n\t\t\t\t\t\t\t\t\t\t\t<p class=\"leco-card-description\">\n\t\t\t\t\t\t\tSolutions de Modulation de Flux pour une Analyse GCxGC Am\u00e9lior\u00e9e\t\t\t\t\t\t<\/p>\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"leco-card-link\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t<svg class=\"leco-card-arrow\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"44\" height=\"44\" viewbox=\"0 0 44 44\" fill=\"none\" focusable=\"false\">\n\t\t\t\t\t\t\t\t<path d=\"M12.7998 22C12.7998 22.5523 13.2475 23 13.7998 23L27.3857 23L21.7998 28.5859C21.4093 28.9764 21.4093 29.6095 21.7998 30C22.1903 30.3905 22.8234 30.3905 23.2139 30L30.5068 22.7071C30.8973 22.3166 30.8973 21.6834 30.5068 21.2929L23.2139 14C22.8234 13.6095 22.1903 13.6095 21.7998 14C21.4093 14.3905 21.4093 15.0236 21.7998 15.4141L27.3857 21L13.7998 21C13.2475 21 12.7998 21.4477 12.7998 22Z\" fill=\"#78543D\"><\/path>\n\t\t\t\t\t\t\t<\/svg>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\n\t\t\t\t\t<\/a>\n\t\t\n\t\t\n\t\t\t\t\t<a href=\"https:\/\/www.leco.com\/fr\/instrument\/alignement-des-donnees-chromatof-sync\/\" class=\"leco-card\" role=\"listitem\" aria-label=\"ChromaTOF Sync - Click to learn more\">\n\t\t\n\t\t\t<!-- Card Image -->\n\t\t\t<div class=\"leco-card-image\" role=\"img\" aria-label=\"Logo du logiciel ChromaTOF Sync LECO\">\n\t\t\t\t\t\t\t\t\t<img src=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/06\/leco-chromatof-sync-logo.webp\" srcset=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/06\/leco-chromatof-sync-logo-1024x576.webp 1024w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/06\/leco-chromatof-sync-logo-768x432.webp 768w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/06\/leco-chromatof-sync-logo-300x169.webp 300w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/06\/leco-chromatof-sync-logo.webp 1280w\" sizes=\"(max-width: 768px) 100vw, (max-width: 1200px) 50vw, 371px\" alt=\"Logo du logiciel ChromaTOF Sync LECO\" class=\"leco-card-img\" loading=\"lazy\" decoding=\"sync\">\n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t<!-- Card Content -->\n\t\t\t<div class=\"leco-card-content\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"leco-card-title\">\n\t\t\t\t\t\tChromaTOF Sync\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t<div class=\"leco-card-bottom\">\n\t\t\t\t\t\t\t\t\t\t\t<p class=\"leco-card-description\">\n\t\t\t\t\t\t\tLogiciel d'alignement et de comparaison de donn\u00e9es\t\t\t\t\t\t<\/p>\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"leco-card-link\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t<svg class=\"leco-card-arrow\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"44\" height=\"44\" viewbox=\"0 0 44 44\" fill=\"none\" focusable=\"false\">\n\t\t\t\t\t\t\t\t<path d=\"M12.7998 22C12.7998 22.5523 13.2475 23 13.7998 23L27.3857 23L21.7998 28.5859C21.4093 28.9764 21.4093 29.6095 21.7998 30C22.1903 30.3905 22.8234 30.3905 23.2139 30L30.5068 22.7071C30.8973 22.3166 30.8973 21.6834 30.5068 21.2929L23.2139 14C22.8234 13.6095 22.1903 13.6095 21.7998 14C21.4093 14.3905 21.4093 15.0236 21.7998 15.4141L27.3857 21L13.7998 21C13.2475 21 12.7998 21.4477 12.7998 22Z\" fill=\"#78543D\"><\/path>\n\t\t\t\t\t\t\t<\/svg>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\n\t\t\t\t\t<\/a>\n\t\t\n\t\t\t<\/div>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Gr\u00e2ce \u00e0 une empreinte volatile plus riche et mieux s\u00e9par\u00e9e, vous pouvez diff\u00e9rencier les origines ou les lots, suivre l'impact des traitements et \u00e9tablir des profils comparatifs qui soutiennent la recherche et le d\u00e9veloppement (R&amp;D) ainsi que le contr\u00f4le qualit\u00e9 (CQ), que vous \u00e9valuiez du chocolat, des ingr\u00e9dients \u00e0 base de cacao ou des liqueurs aromatis\u00e9es au chocolat.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-style-rounded-full-width\"><img loading=\"lazy\" decoding=\"async\" width=\"576\" height=\"182\" src=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/06\/gcxgc-contour-plot-ecuador-cocoa-liquor.webp\" alt=\"Trac\u00e9 de contour GCxGC comparant les donn\u00e9es de liqueur de cacao obtenues par diff\u00e9rentes m\u00e9thodes d&#039;extraction d&#039;\u00e9chantillons\" class=\"wp-image-5744\" srcset=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/06\/gcxgc-contour-plot-ecuador-cocoa-liquor.webp 576w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/06\/gcxgc-contour-plot-ecuador-cocoa-liquor-300x95.webp 300w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/06\/gcxgc-contour-plot-ecuador-cocoa-liquor-18x6.webp 18w\" sizes=\"auto, (max-width: 576px) 100vw, 576px\" \/><figcaption class=\"wp-element-caption\">Figure 1. Chromatogrammes bidimensionnels (GCxGC) obtenus par SHS (\u00e0 gauche) et HS-SPME (\u00e0 droite) sur l'\u00e9chantillon de masse de cacao de l'\u00c9quateur. La m\u00eame \u00e9chelle de couleurs a \u00e9t\u00e9 appliqu\u00e9e aux deux chromatogrammes. La zone agrandie affiche l'ion extrait (XIC) 104.02 illustrant la d\u00e9tection du m\u00e9thonial uniquement avec la SPME.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full is-style-rounded-full-width\"><img loading=\"lazy\" decoding=\"async\" width=\"602\" height=\"405\" src=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/06\/gcxgc-peak-identification-table-ecuador-cocoa-liquor.webp\" alt=\"Tableau de donn\u00e9es GCxGC utilisant une carte thermique en couleur pour identifier les concentrations de compos\u00e9s aromatiques du cacao\" class=\"wp-image-5745\" srcset=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/06\/gcxgc-peak-identification-table-ecuador-cocoa-liquor.webp 602w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/06\/gcxgc-peak-identification-table-ecuador-cocoa-liquor-300x202.webp 300w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/06\/gcxgc-peak-identification-table-ecuador-cocoa-liquor-18x12.webp 18w\" sizes=\"auto, (max-width: 602px) 100vw, 602px\" \/><figcaption class=\"wp-element-caption\">Figure 2. M\u00e9trique d'identification des pics ART (tableau des r\u00e9sultats align\u00e9s) comprenant le score de similarit\u00e9, les informations sur l'indice de R\u00e9tention (RI) et les tendances relatives via une carte thermique o\u00f9 l'\u00e9chelle de couleurs indique la concentration relative pour des analytes repr\u00e9sentatifs parmi certains compos\u00e9s pertinents pour l'ar\u00f4me du cacao.<\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0\">\n<hr class=\"wp-block-separator has-text-color has-sl-1-color has-alpha-channel-opacity has-sl-1-background-color has-background has-base-100-color has-base-100-background-color is-style-default\" style=\"margin-top:60px;margin-bottom:60px\">\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading is-style-h2-style\">LECO apporte un plus<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Bien que le chocolat soit sans aucun doute la vedette incontest\u00e9e, notre table de la Saint-Valentin pr\u00e9sente \u00e9galement quelques cadeaux et articles typiques de cette f\u00eate. La Saint-Valentin est plac\u00e9e sous le signe des sens : l'ar\u00f4me des roses fra\u00eechement coup\u00e9es, la premi\u00e8re gorg\u00e9e de vin, l'onctuosit\u00e9 du chocolat et la signature famili\u00e8re d'un parfum pr\u00e9f\u00e9r\u00e9. Mais derri\u00e8re chaque moment \u201c romantique \u201d se cache une empreinte chimique : des compos\u00e9s volatils qui d\u00e9finissent l'ar\u00f4me et la saveur, des contaminants \u00e0 l'\u00e9tat de traces qui peuvent alt\u00e9rer la qualit\u00e9, et des profils de composition qui contribuent \u00e0 confirmer l'authenticit\u00e9 et la r\u00e9gularit\u00e9.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u2019est pourquoi cette table de la Saint-Valentin constitue une vitrine analytique si ludique (et \u00e9tonnamment r\u00e9aliste). Gr\u00e2ce aux flux de travail LECO, les laboratoires peuvent \u00e9tablir le profil des ar\u00f4mes, d\u00e9tecter les notes ind\u00e9sirables \u00e0 l\u2019\u00e9tat de traces, v\u00e9rifier l\u2019authenticit\u00e9 et garantir la qualit\u00e9 et la conformit\u00e9 des aliments, des boissons et des produits de grande consommation. Chaque exemple ci-dessous renvoie vers une note d&#x27;application correspondante, ce qui vous permet d&#x27;approfondir vos connaissances sur les m\u00e9thodes et les r\u00e9sultats.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading is-style-default\">Roses fra\u00eechement coup\u00e9es\u2014Profil de l'ar\u00f4me<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Capturer une empreinte volatile florale pour le criblage non cibl\u00e9 et le profilage comparatif (par exemple, impacts de la vari\u00e9t\u00e9, de la fra\u00eecheur, du stockage ou de la transformation).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Explorez notre <a href=\"https:\/\/www.leco.com\/fr\/applications\/flavor-aroma\/aroma-flavor-fragrance-analysis\/\" data-type=\"application\" data-id=\"60\">Centre de ressources sur les ar\u00f4mes et les saveurs<\/a><\/p>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<hr class=\"wp-block-separator has-text-color has-sl-1-color has-alpha-channel-opacity has-sl-1-background-color has-background\" style=\"margin-top:0px;margin-bottom:0px\">\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading is-style-default\">Vin : d\u00e9pistage du go\u00fbt de bouchon<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">D\u00e9tectez les marqueurs de go\u00fbt de bouchon \u2014 tels que le TCA \u2014 \u00e0 l'\u00e9tat de traces gr\u00e2ce au HS-SPME + GC-TOFMS, contribuant ainsi \u00e0 pr\u00e9server la qualit\u00e9 sensorielle et \u00e0 r\u00e9duire les r\u00e9clamations clients co\u00fbteuses.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Lisez la note d'application, <a href=\"https:\/\/www.leco.com\/fr\/documents\/203-821-517\/\" data-type=\"document\" data-id=\"926\">Quantification du go\u00fbt de bouchon dans le vin par CPG-TOFMS<\/a><\/p>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<hr class=\"wp-block-separator has-text-color has-sl-1-color has-alpha-channel-opacity has-sl-1-background-color has-background\" style=\"margin-top:0px;margin-bottom:0px\">\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading is-style-default\">Profilage de l'authenticit\u00e9 des parfums<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Diff\u00e9rencier la marque de l'imitation en comparant les profils compositionnels complets \u00e0 l'aide de la GCxGC-TOFMS et d'outils de comparaison de motifs visuels, ce qui favorise l'authenticit\u00e9 et la protection de la marque.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Lisez la note d'application, <a href=\"https:\/\/www.leco.com\/fr\/documents\/203-821-683\/\" data-type=\"document\" data-id=\"1088\">Diff\u00e9rencier les parfums de marque originale des imitations<\/a><\/p>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<hr class=\"wp-block-separator has-text-color has-sl-1-color has-alpha-channel-opacity has-sl-1-background-color has-background\" style=\"margin-top:0px;margin-bottom:0px\">\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading is-style-default\">Maquillage \u2014 Allerg\u00e8nes de parfum et MOSH\/MOAH<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Identifier les allerg\u00e8nes de parfum dans les cosm\u00e9tiques par GCxGC-TOFMS et prendre en charge les approches de criblage des MOSH\/MOAH pour les matrices de rouge \u00e0 l\u00e8vres, aidant ainsi les laboratoires \u00e0 r\u00e9pondre aux attentes en mati\u00e8re de s\u00e9curit\u00e9 et de conformit\u00e9.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Lisez la note d'application, <a href=\"https:\/\/www.leco.com\/fr\/documents\/203-821-707\/\" data-type=\"document\" data-id=\"1112\">Flux de travail GCxGC pour la conformit\u00e9 aux allerg\u00e8nes alimentaires<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Lisez la note d'application, <a href=\"https:\/\/www.leco.com\/wp-content\/uploads\/documents\/brochures\/203-821-645-BT4D-mineral-oil-analysis.pdf\" data-type=\"attachment\" data-id=\"1273\">Faites confiance \u00e0 vos r\u00e9sultats : flux de travail pour l'analyse des huiles min\u00e9rales<\/a><\/p>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<hr class=\"wp-block-separator has-text-color has-sl-1-color has-alpha-channel-opacity has-sl-1-background-color has-background\" style=\"margin-top:0px;margin-bottom:0px\">\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading is-style-default\">Whisky \u2014 Profil aromatique<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Caract\u00e9riser et comparer les signatures volatiles par SPME-GCxGC-TOFMS pour soutenir la diff\u00e9renciation des produits, la coh\u00e9rence des lots et les \u00e9tudes de maturation\/vieillissement.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Lisez la note d'application, <a href=\"https:\/\/www.leco.com\/fr\/documents\/203-821-661\/\" data-type=\"document\" data-id=\"1069\">Profilage des ar\u00f4mes de whisky par GC-TOFMS et Sync<\/a><\/p>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<hr class=\"wp-block-separator has-text-color has-sl-1-color has-alpha-channel-opacity has-sl-1-background-color has-background\" style=\"margin-top:0px;margin-bottom:0px\">\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading is-style-default\">Camembert r\u00f4ti : prot\u00e9ines de fromage et MOSH\/MOAH<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Caract\u00e9riser et comparer les signatures volatiles par SPME-GCxGC-TOFMS pour soutenir la diff\u00e9renciation des produits, la coh\u00e9rence des lots et les \u00e9tudes de maturation\/vieillissement.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Lisez la note d'application, <a href=\"https:\/\/www.leco.com\/fr\/documents\/203-821-674\/\" data-type=\"document\" data-id=\"1081\">D\u00e9termination de l'azote\/prot\u00e9ines dans le fromage avec le FP828<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Lisez la note d'application, <a href=\"https:\/\/www.leco.com\/wp-content\/uploads\/documents\/brochures\/203-821-645-BT4D-mineral-oil-analysis.pdf\" data-type=\"attachment\" data-id=\"1273\">Faites confiance \u00e0 vos r\u00e9sultats : flux de travail pour l'analyse des huiles min\u00e9rales<\/a><\/p>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<hr class=\"wp-block-separator has-text-color has-sl-1-color has-alpha-channel-opacity has-sl-1-background-color has-background\" style=\"margin-top:0px;margin-bottom:0px\">\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading is-style-default\">Pain croustillant : qualit\u00e9 et r\u00e9gularit\u00e9 de la farine<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Garantir les sp\u00e9cifications de qualit\u00e9 de la farine gr\u00e2ce \u00e0 l'analyse de l'azote\/prot\u00e9ines par combustion pour surveiller la consistance des prot\u00e9ines et la performance de panification.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Lisez la note d'application, <a href=\"https:\/\/www.leco.com\/fr\/documents\/203-821-562\/\" data-type=\"document\" data-id=\"970\">D\u00e9termination de la teneur en prot\u00e9ines de la farine \u00e0 l&#x27;aide du LECO FP828<\/a><\/p>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<hr class=\"wp-block-separator has-text-color has-sl-1-color has-alpha-channel-opacity has-sl-1-background-color has-background\" style=\"margin-top:0px;margin-bottom:0px\">\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-container-core-group-is-layout-1ea9787f wp-block-group-is-layout-constrained\" style=\"margin-top:48px\">\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading is-style-h2-style\">De la part de LECO, avec toute notre affection<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Comme vous pouvez le constater, du premier \u00ab pop \u00bb du bouchon de champagne \u00e0 la derni\u00e8re bouch\u00e9e de chocolat, la Saint-Valentin regorge de ph\u00e9nom\u00e8nes chimiques qui m\u00e9ritent d\u2019\u00eatre explor\u00e9s, et LECO dispose des outils adapt\u00e9s pour y parvenir. Que ce soit pour \u00e9tablir le profil d\u2019un ar\u00f4me, confirmer l\u2019authenticit\u00e9 d\u2019un produit ou d\u00e9tecter la pr\u00e9sence de contaminants, nos solutions offrent aux laboratoires une s\u00e9paration haute r\u00e9solution, des identifications fiables et des r\u00e9sultats exploitables dans un large \u00e9ventail de secteurs et d\u2019applications.<\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0\">\n<hr class=\"wp-block-separator has-text-color has-sl-1-color has-alpha-channel-opacity has-sl-1-background-color has-background has-base-100-color has-base-100-background-color is-style-default\" style=\"margin-top:60px;margin-bottom:60px\">\n<\/div>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-container-core-group-is-layout-875e403b wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading is-style-h4-style\">Instruments utilis\u00e9s<\/h2>\n\n\n\n<div class=\"leco-card-grid-block wp-block-create-block-leco-card-grid\">\n\t<div class=\"leco-card-grid columns-2\" role=\"list\" aria-label=\"Card grid\">\n\t\t\n\t\t\t\t\t<a href=\"https:\/\/www.leco.com\/fr\/instrument\/gc-tofms-de-paillasse\/\" class=\"leco-card\" role=\"listitem\" aria-label=\"Pegasus BTX Series - Click to learn more\">\n\t\t\n\t\t\t<!-- Card Image -->\n\t\t\t<div class=\"leco-card-image\" role=\"img\" aria-label=\"Syst\u00e8me GC-MS LECO Pegasus BTX avec chargeur automatique\">\n\t\t\t\t\t\t\t\t\t<img src=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-btx-gc-ms-with-autoloader.webp\" srcset=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-btx-gc-ms-with-autoloader-1024x576.webp 1024w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-btx-gc-ms-with-autoloader-768x432.webp 768w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-btx-gc-ms-with-autoloader-300x169.webp 300w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/03\/leco-btx-gc-ms-with-autoloader.webp 1280w\" sizes=\"(max-width: 768px) 100vw, (max-width: 1200px) 50vw, 371px\" alt=\"Syst\u00e8me GC-MS LECO Pegasus BTX avec chargeur automatique\" class=\"leco-card-img\" loading=\"lazy\" decoding=\"sync\">\n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t<!-- Card Content -->\n\t\t\t<div class=\"leco-card-content\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"leco-card-title\">\n\t\t\t\t\t\tS\u00e9rie Pegasus BTX\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t<div class=\"leco-card-bottom\">\n\t\t\t\t\t\t\t\t\t\t\t<p class=\"leco-card-description\">\n\t\t\t\t\t\t\tSpectrom\u00e8tre de masse \u00e0 temps de vol \u00e0 haute sensibilit\u00e9\t\t\t\t\t\t<\/p>\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"leco-card-link\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t<svg class=\"leco-card-arrow\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"44\" height=\"44\" viewbox=\"0 0 44 44\" fill=\"none\" focusable=\"false\">\n\t\t\t\t\t\t\t\t<path d=\"M12.7998 22C12.7998 22.5523 13.2475 23 13.7998 23L27.3857 23L21.7998 28.5859C21.4093 28.9764 21.4093 29.6095 21.7998 30C22.1903 30.3905 22.8234 30.3905 23.2139 30L30.5068 22.7071C30.8973 22.3166 30.8973 21.6834 30.5068 21.2929L23.2139 14C22.8234 13.6095 22.1903 13.6095 21.7998 14C21.4093 14.3905 21.4093 15.0236 21.7998 15.4141L27.3857 21L13.7998 21C13.2475 21 12.7998 21.4477 12.7998 22Z\" fill=\"#78543D\"><\/path>\n\t\t\t\t\t\t\t<\/svg>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\n\t\t\t\t\t<\/a>\n\t\t\n\t\t\n\t\t\t\t\t<a href=\"https:\/\/www.leco.com\/fr\/instrument\/analyse-cpgc-par-chromatof\/\" class=\"leco-card\" role=\"listitem\" aria-label=\"ChromaTOF Tile - Click to learn more\">\n\t\t\n\t\t\t<!-- Card Image -->\n\t\t\t<div class=\"leco-card-image\" role=\"img\" aria-label=\"Logo du logiciel ChromaTOF Tile LECO\">\n\t\t\t\t\t\t\t\t\t<img src=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/06\/leco-chromatof-tile-logo.webp\" srcset=\"https:\/\/www.leco.com\/wp-content\/uploads\/2026\/06\/leco-chromatof-tile-logo-1024x576.webp 1024w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/06\/leco-chromatof-tile-logo-768x432.webp 768w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/06\/leco-chromatof-tile-logo-300x169.webp 300w, https:\/\/www.leco.com\/wp-content\/uploads\/2026\/06\/leco-chromatof-tile-logo.webp 1280w\" sizes=\"(max-width: 768px) 100vw, (max-width: 1200px) 50vw, 371px\" alt=\"Logo du logiciel ChromaTOF Tile LECO\" class=\"leco-card-img\" loading=\"lazy\" decoding=\"sync\">\n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t<!-- Card Content -->\n\t\t\t<div class=\"leco-card-content\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"leco-card-title\">\n\t\t\t\t\t\tChromaTOF Tile\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t<div class=\"leco-card-bottom\">\n\t\t\t\t\t\t\t\t\t\t\t<p class=\"leco-card-description\">\n\t\t\t\t\t\t\tComparer visuellement les ensembles de donn\u00e9es GCxGC\t\t\t\t\t\t<\/p>\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"leco-card-link\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t<svg class=\"leco-card-arrow\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"44\" height=\"44\" viewbox=\"0 0 44 44\" fill=\"none\" focusable=\"false\">\n\t\t\t\t\t\t\t\t<path d=\"M12.7998 22C12.7998 22.5523 13.2475 23 13.7998 23L27.3857 23L21.7998 28.5859C21.4093 28.9764 21.4093 29.6095 21.7998 30C22.1903 30.3905 22.8234 30.3905 23.2139 30L30.5068 22.7071C30.8973 22.3166 30.8973 21.6834 30.5068 21.2929L23.2139 14C22.8234 13.6095 22.1903 13.6095 21.7998 14C21.4093 14.3905 21.4093 15.0236 21.7998 15.4141L27.3857 21L13.7998 21C13.2475 21 12.7998 21.4477 12.7998 22Z\" fill=\"#78543D\"><\/path>\n\t\t\t\t\t\t\t<\/svg>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\n\t\t\t\t\t<\/a>\n\t\t\n\t\t\n\t\t\t\t\t<a href=\"https:\/\/www.leco.com\/fr\/instrument\/alignement-des-donnees-chromatof-sync\/\" class=\"leco-card\" role=\"listitem\" aria-label=\"ChromaTOF Sync - 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