{"id":202886,"date":"2023-03-14T10:35:36","date_gmt":"2023-03-14T10:35:36","guid":{"rendered":"https:\/\/blog.hannaservice.eu\/acides-volatils-dans-le-vin-difference-entre-les-methodes-au-titrateur-et-au-spectrophotometre\/"},"modified":"2023-05-03T13:49:46","modified_gmt":"2023-05-03T13:49:46","slug":"acides-volatils-dans-le-vin-difference-entre-les-methodes-au-titrateur-et-au-spectrophotometre","status":"publish","type":"post","link":"https:\/\/blog.hannaservice.eu\/fr\/acides-volatils-dans-le-vin-difference-entre-les-methodes-au-titrateur-et-au-spectrophotometre\/","title":{"rendered":"Acides volatils dans le vin : diff\u00e9rence entre les m\u00e9thodes au titrateur et au spectrophotom\u00e8tre"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"202886\" class=\"elementor elementor-202886 elementor-202717\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-b1bb83d elementor-section-height-min-height elementor-section-items-top elementor-section-boxed elementor-section-height-default\" data-id=\"b1bb83d\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-top-column elementor-element elementor-element-d625e06\" data-id=\"d625e06\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-828ca83 elementor-widget elementor-widget-text-editor\" data-id=\"828ca83\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2><span style=\"color: #ffffff;\"><span style=\"text-decoration: underline;\"><strong>L&rsquo;acidit\u00e9 volatile<\/strong><\/span> (VA) est l&rsquo;un des param\u00e8tres les plus importants d\u00e9termin\u00e9s lors de la <span style=\"text-decoration: underline;\">production<\/span> et <span style=\"text-decoration: underline;\">du stockage du vin<\/span>. <\/span><\/h2>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c25adb3 elementor-widget elementor-widget-text-editor\" data-id=\"c25adb3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Il est important en raison de la stabilit\u00e9 chimique et microbiologique du vin, en pr\u00e9servant son go\u00fbt et sa couleur sp\u00e9cifiques, et il est li\u00e9 \u00e0 la qualit\u00e9 du vin [1].<\/p>\n<p>Les acides volatils dans le vin se forment en tant que produits secondaires de la fermentation alcoolique ou lors du processus de d\u00e9t\u00e9rioration du vin. Ils affectent les propri\u00e9t\u00e9s sensorielles du vin et sont des indicateurs de la (in)stabilit\u00e9 biologique du vin.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3cd958a elementor-widget elementor-widget-text-editor\" data-id=\"3cd958a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Sous certaines conditions (comme le chauffage), il s&rsquo;\u00e9vapore du vin. La part totale des acides volatils est exprim\u00e9e en acide ac\u00e9tique car il repr\u00e9sente 99% de tous les acides volatils du vin. [2].<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-58ac147 elementor-hidden-tablet\" data-id=\"58ac147\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-cf050ab elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"cf050ab\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-75338df\" data-id=\"75338df\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-df363f7 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"df363f7\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-d2b4c0c\" data-id=\"d2b4c0c\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-bca5035 elementor-align-center elementor-mobile-align-justify elementor-widget elementor-widget-button\" data-id=\"bca5035\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-xl\" href=\"https:\/\/www.hannamaroc.com\/contact-us\" target=\"_blank\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">OBTENIR UN DEVIS<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-6f7d52b\" data-id=\"6f7d52b\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-744afa5 elementor-widget elementor-widget-text-editor\" data-id=\"744afa5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3><strong>Pour mesurer<\/strong> l&rsquo;acide volatil dans le vin, il existe plusieurs <strong>m\u00e9thodes<\/strong> :<\/h3>\n<ol>\n<li>\n<h3>\u00e0 l&rsquo;aide d&rsquo;un <strong>titrateur<\/strong><\/h3>\n<\/li>\n<li>\n<h3>avec <strong>spectrophotom\u00e8tre<\/strong><\/h3>\n<\/li>\n<\/ol>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-7a33ec6 elementor-reverse-mobile elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7a33ec6\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-a222b1b\" data-id=\"a222b1b\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7f1b4c5 elementor-widget elementor-widget-text-editor\" data-id=\"7f1b4c5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>L&rsquo;origine de l&rsquo;acide ac\u00e9tique dans le vin<\/h2>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7d0b855 elementor-widget elementor-widget-text-editor\" data-id=\"7d0b855\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ol>\n<li>Il passe du raisin au vin uniquement s&rsquo;il est avari\u00e9 ou ab\u00eem\u00e9 (moisissure, insectes&#8230;) <\/li>\n<li>Produit secondaire de la fermentation alcoolique :<br \/><span style=\"font-size: 16px;\"><span style=\"font-size: 16px;\"><span style=\"font-size: 16px;\"><span style=\"font-size: 16px;\">a) dismutation de l&rsquo;ac\u00e9tald\u00e9hyde<br \/> <strong>ac\u00e9tald\u00e9hyde + H<sub>2<\/sub>O<\/strong><strong>\u2192<\/strong> <strong style=\"font-size: 16px;\">acide ac\u00e9tique + EtOH, <br \/><\/strong> b) pendant la fermentation :<br \/>levures, temp\u00e9rature, teneur en sucre, acc\u00e8s \u00e0 l&rsquo;air<\/span><\/span><\/span><\/span> <\/li>\n<li>Biod\u00e9gradation de l&rsquo;acide citrique<\/li>\n<li>Apr\u00e8s la fermentation alcoolique \u2013 pendant la conservation du vin :<br \/><span style=\"font-size: 16px;\">a) oxydation de l&rsquo;\u00e9thanol avec l&rsquo;oxyg\u00e8ne de l&rsquo;air,<br \/><strong>\u00e9thanol + O<sub>2<\/sub> \u2192 ac\u00e9tald\u00e9hyde + H<sub>2<\/sub>O,<\/strong> <br \/><strong>ac\u00e9tald\u00e9hyde \u2014 <sup>O2\/H2O<\/sup> \u2192 acide ac\u00e9tiques <br \/><\/strong><\/span><span style=\"font-size: 16px;\">b) de plus grandes quantit\u00e9s se produisent en cons\u00e9quence de certaines alt\u00e9rations caus\u00e9es par des bact\u00e9ries (fleur de vigne&#8230;)<\/span><\/li>\n<\/ol>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-570a4e0\" data-id=\"570a4e0\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-91b9d1c elementor-widget elementor-widget-image\" data-id=\"91b9d1c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/elementor\/thumbs\/Slika-4-pvpi11zosxhegddgj8ufgo9z668xeny6zdiveyezfk.jpg\" title=\"Slika-4\" alt=\"Slika-4\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6a8764f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6a8764f\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-38ddf0d\" data-id=\"38ddf0d\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-814e99a elementor-widget elementor-widget-text-editor\" data-id=\"814e99a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Le vin sain contient 0,3-0,6 g \/ L; moins souvent jusqu&rsquo;\u00e0 1 g\/L.<br \/>Le vin pourri en contient 2-3 g\/L.<\/p>\n<h4><strong>Selon l&rsquo;Ordonnance sur le vin, le maximum est autoris\u00e9 [3] :<\/strong><\/h4>\n<ul>\n<li>blanc, rose, cerise noire avec une teneur jusqu&rsquo;\u00e0 10% vol d&rsquo;alcool : 1,1 g\/L d&rsquo;acide ac\u00e9tique<\/li>\n<li>vin avec appellation d&rsquo;origine contr\u00f4l\u00e9e : 1 g\/L d&rsquo;acide ac\u00e9tique<\/li>\n<li>vin titrant plus de 10% vol d&rsquo;alcool : pour chaque vol. % d&rsquo;alcool est autoris\u00e9 un autre + 0,06 g \/ L d&rsquo;acide ac\u00e9tique<\/li>\n<\/ul>\n<p>Autres acides volatils du vin : acide propionique, acide butyrique, acide val\u00e9rique, puis capro\u00efque, caprylique, caprique, p\u00e9largonium, laurique, etc.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d02f4e4 elementor-widget elementor-widget-text-editor\" data-id=\"d02f4e4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3>Pour mesurer l&rsquo;acide volatil dans le vin, il existe plusieurs m\u00e9thodes d&rsquo;analyse<\/h3>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-451246d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"451246d\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-ff8a787\" data-id=\"ff8a787\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e9393dd elementor-widget elementor-widget-heading\" data-id=\"e9393dd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">1. Mesure des acides volatils \u00e0 l'aide d'un titrateur <\/h3>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-c7741c0 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"c7741c0\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-c7abccb\" data-id=\"c7abccb\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e8445c9 elementor-widget elementor-widget-text-editor\" data-id=\"e8445c9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Cette m\u00e9thode n\u00e9cessite la distillation \u00e0 la vapeur (\u00e0 l&rsquo;aide d&rsquo;un alambic Markham ou Cash modifi\u00e9) d&rsquo;un \u00e9chantillon de vin dont le dioxyde de soufre a d&rsquo;abord \u00e9t\u00e9 \u00e9limin\u00e9 par oxydation avec du peroxyde d&rsquo;hydrog\u00e8ne.<\/p>\n<p>Le distillat est titr\u00e9 avec de l&rsquo;hydroxyde de sodium jusqu&rsquo;au point final pH 8,20 indiqu\u00e9 avec une \u00e9lectrode de pH et l&rsquo;acidit\u00e9 calcul\u00e9e et exprim\u00e9e en \u00e9quivalents d&rsquo;acide ac\u00e9tique.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-61bb0a4 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"61bb0a4\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-3f29d4d\" data-id=\"3f29d4d\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2fffb2e elementor-widget elementor-widget-text-editor\" data-id=\"2fffb2e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul>\n<li><strong>Mat\u00e9riel n\u00e9cessaire<\/strong> : Markham modifi\u00e9 ou Cash still, titrateur automatique, \u00e9lectrode de pH, glossaire<\/li>\n<li><strong>R\u00e9actifs<\/strong> : solution d&rsquo;hydroxyde de sodium standardis\u00e9e, solutions d&rsquo;\u00e9talonnage pour l&rsquo;\u00e9lectrode de pH, solution de peroxyde d&rsquo;hydrog\u00e8ne<\/li>\n<li><strong>Services<\/strong> : \u00c9lectricit\u00e9, approvisionnement en eau, \u00e9vier, aire de lavage, approvisionnement en gaz naturel<\/li>\n<li><strong>Espace requis : Espace sur le banc<\/strong><\/li>\n<\/ul>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-1b83061\" data-id=\"1b83061\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-0af027f elementor-widget elementor-widget-text-editor\" data-id=\"0af027f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3><strong>Avantages<\/strong> : gain de temps, r\u00e9duction et rationalisation de la consommation de produits chimiques, r\u00e9sultats plus pr\u00e9cis, possibilit\u00e9 de mesurer davantage de param\u00e8tres du vin sur le titrateur<\/h3>\n<h3><strong>Inconv\u00e9nients<\/strong> : co\u00fbt initial de l&rsquo;\u00e9quipement, pr\u00e9paration des \u00e9chantillons<\/h3>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-3079f61 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"3079f61\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-9cd684a\" data-id=\"9cd684a\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-51f1c7f elementor-widget elementor-widget-heading\" data-id=\"51f1c7f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">HI931<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8707f09 elementor-widget elementor-widget-text-editor\" data-id=\"8707f09\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>Titrateur Potentiom\u00e9trique Automatique <\/strong><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-052684a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"052684a\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-aaebdd0\" data-id=\"aaebdd0\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ab08a80 elementor-widget elementor-widget-text-editor\" data-id=\"ab08a80\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>Le titreur automatique HI931 est la r\u00e9ponse \u00e0 vos besoins de titrage d\u00e9di\u00e9. <\/strong><\/p>\n<p>Enti\u00e8rement personnalisable, le HI931 offre des r\u00e9sultats pr\u00e9cis et une exp\u00e9rience utilisateur intuitive, le tout dans un bo\u00eetier compact.<\/p>\n<p>Titrez pour une vari\u00e9t\u00e9 de mesures en appuyant sur un bouton, y compris les acides, les bases, le redox et les ions s\u00e9lectifs.<\/p>\n<p>Aucune mise \u00e0 niveau de programmation suppl\u00e9mentaire \u00e0 acheter. Les seules choses dont vous avez besoin pour commencer \u00e0 utiliser le HI931 sont un capteur et un titrant.<\/p>\n<ul>\n<li>Faible encombrement pour optimiser pleinement votre plan de travail.<\/li>\n<li>Pompe doseuse in\u00e9gal\u00e9e \u00e0 40 000 \u00e9tapes pour de petits volumes de titrant pour vous aider \u00e0 atteindre un point final tr\u00e8s pr\u00e9cis pour une plus grande coh\u00e9rence.<\/li>\n<li>Possibilit\u00e9 de stocker jusqu&rsquo;\u00e0 100 m\u00e9thodes.<\/li>\n<\/ul>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b72f7d0 elementor-hidden-mobile elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"b72f7d0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-448750d\" data-id=\"448750d\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d660ce4 elementor-widget elementor-widget-image\" data-id=\"d660ce4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"605\" height=\"605\" src=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/03\/titrator.jpg\" class=\"attachment-medium_large size-medium_large wp-image-202743\" alt=\"\" srcset=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/03\/titrator.jpg 605w, https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/03\/titrator-300x300.jpg 300w, https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/03\/titrator-600x600.jpg 600w, https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/03\/titrator-150x150.jpg 150w\" sizes=\"(max-width: 605px) 100vw, 605px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0a621f8 elementor-align-center elementor-mobile-align-justify elementor-widget elementor-widget-button\" data-id=\"0a621f8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-xl\" href=\"https:\/\/www.hannamaroc.com\/titrateur-potentiometrique-automatique-hi931-02-product\" target=\"_blank\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">HI931 - EN SAVOIR PLUS<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-4288c99 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4288c99\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-eb8c6a5\" data-id=\"eb8c6a5\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d73838f elementor-widget elementor-widget-heading\" data-id=\"d73838f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2. Mesure des acides volatils avec spectrophotom\u00e8tre<\/h3>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f0c827c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f0c827c\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-df28c8b\" data-id=\"df28c8b\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-50baccf elementor-widget elementor-widget-text-editor\" data-id=\"50baccf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>L&rsquo;acidit\u00e9 volatile \u00e9tant principalement constitu\u00e9e d&rsquo;acide ac\u00e9tique (99%), il est parfois utile de mesurer la concentration d&rsquo;acide ac\u00e9tique seul.<\/p>\n<p>La conversion de l&rsquo;acide ac\u00e9tique par l&rsquo;ald\u00e9hyde d\u00e9shydrog\u00e9nase peut \u00eatre suivie directement en mesurant l&rsquo;absorbance (340 nm) r\u00e9sultant de la g\u00e9n\u00e9ration d&rsquo;un sous-produit de la r\u00e9action (NADH).<\/p>\n<p>Le test est assez simple \u00e0 r\u00e9aliser et ne n\u00e9cessite qu&rsquo;une dilution de l&rsquo;\u00e9chantillon. Des kits pour ce test sont disponibles dans le commerce.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-1f32cd8 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1f32cd8\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-233f9ca\" data-id=\"233f9ca\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-cc2ff5e elementor-widget elementor-widget-text-editor\" data-id=\"cc2ff5e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul>\n<li><strong>Mat\u00e9riel n\u00e9cessaire<\/strong> : spectrophotom\u00e8tre et cuvettes UV, autopipettes<\/li>\n<li><strong>\u00c9talonnage<\/strong> : Solutions \u00e9talons de glucose dans l&rsquo;eau pr\u00e9par\u00e9es et fournies par le kit<\/li>\n<li><strong>Services<\/strong> : \u00c9lectricit\u00e9, aire de lavage<\/li>\n<li><strong>Espace requis<\/strong> : espace sur la paillasse en fonction de l&rsquo;encombrement du spectrophotom\u00e8tre<\/li>\n<\/ul>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-17e393f\" data-id=\"17e393f\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-b22672d elementor-widget elementor-widget-text-editor\" data-id=\"b22672d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3><strong>Avantages<\/strong> : pr\u00e9paration simple des \u00e9chantillons, gain de temps, r\u00e9sultats plus pr\u00e9cis, faible encombrement de l&rsquo;instrument<\/h3>\n<h3><strong>Inconv\u00e9nients<\/strong> : co\u00fbt des kits de dosage, besoin de calculer le r\u00e9sultat, co\u00fbt de l&rsquo;instrumentation [4,5,6]<\/h3>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a0cefaa elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a0cefaa\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-8c34ef1\" data-id=\"8c34ef1\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-289cd00 elementor-widget elementor-widget-heading\" data-id=\"289cd00\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">HI801<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1c20c57 elementor-widget elementor-widget-text-editor\" data-id=\"1c20c57\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Spectrophotom\u00e8tre visible \u00e0 iris<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5fed608 elementor-reverse-mobile elementor-section-content-top elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5fed608\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-6ef17a6\" data-id=\"6ef17a6\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-df216fd elementor-widget elementor-widget-image\" data-id=\"df216fd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"600\" height=\"313\" src=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/03\/iris-600x313.jpg\" class=\"attachment-large size-large wp-image-202751\" alt=\"\" srcset=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/03\/iris-600x313.jpg 600w, https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/03\/iris-300x157.jpg 300w, https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/03\/iris.jpg 605w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-84d041a elementor-widget elementor-widget-image\" data-id=\"84d041a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"443\" height=\"443\" src=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2022\/07\/HI-801.jpg\" class=\"attachment-large size-large wp-image-176703\" alt=\"\" srcset=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2022\/07\/HI-801.jpg 443w, https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2022\/07\/HI-801-300x300.jpg 300w, https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2022\/07\/HI-801-150x150.jpg 150w\" sizes=\"(max-width: 443px) 100vw, 443px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a9bb443 elementor-align-center elementor-mobile-align-justify elementor-widget elementor-widget-button\" data-id=\"a9bb443\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-xl\" href=\"https:\/\/www.hannamaroc.com\/spectrophotometre-iris-hi801-product\" target=\"_blank\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">HI801 - EN SAVOIR PLUS<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-75643e0\" data-id=\"75643e0\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-8e30227 elementor-widget elementor-widget-text-editor\" data-id=\"8e30227\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>Le HI801 Iris est un spectrophotom\u00e8tre \u00e9l\u00e9gant et intuitif qui permet de mesurer toutes les longueurs d&rsquo;onde de la lumi\u00e8re visible. <\/strong><\/p>\n<p>Personnalisez vos m\u00e9thodes, prenez une large gamme de mesures et soyez confiant dans la pr\u00e9cision de vos tests avec l&rsquo;iris.<\/p>\n<ul>\n<li>Iris propose une s\u00e9lection pr\u00e9cise de longueur d&rsquo;onde entre 340 nm et 900 nm pour une conformit\u00e9 et une pr\u00e9cision compl\u00e8tes de la m\u00e9thode qui sont n\u00e9cessaires dans des industries telles que les laboratoires professionnels, les installations de traitement de l&rsquo;eau, les \u00e9tablissements vinicoles, etc.<\/li>\n<li>Les r\u00e9sultats sont coh\u00e9rents et pr\u00e9cis quel que soit le d\u00e9bit gr\u00e2ce au syst\u00e8me optique de haute qualit\u00e9 et de conception unique.<\/li>\n<li>Les options de personnalisation incluent plusieurs formes et tailles de cuvettes, des courbes d&rsquo;\u00e9talonnage personnalis\u00e9es et des m\u00e9thodes.<\/li>\n<\/ul>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-06499d7 elementor-hidden-mobile elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"06499d7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-fb15eb6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"fb15eb6\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-af7bed3\" data-id=\"af7bed3\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-417ffe2 elementor-widget elementor-widget-text-editor\" data-id=\"417ffe2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>Auteur<\/strong> : Tajana Mokrovi\u0107<br \/>mag.nutr.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-cb38224\" data-id=\"cb38224\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-cc52485 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"cc52485\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-8778acc\" data-id=\"8778acc\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-16e312b elementor-widget elementor-widget-text-editor\" data-id=\"16e312b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3 style=\"text-align: center;\"><strong>Avoir des questions?<\/strong><\/h3>\n<p style=\"text-align: center;\">Contactez un sp\u00e9cialiste technique <a class=\"keychainify-checked\" href=\"mailto:info@hannaservice.eu\"><strong>Hanna \u00e0 info@hannaservice.eu<\/strong><\/a> ou en utilisant notre <strong><a href=\"https:\/\/www.hannaservice.eu\/contact-us\" target=\"_blank\" rel=\"noopener\">formulaire de contact<\/a><\/strong>.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-18e6f6e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"18e6f6e\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-53dd546\" data-id=\"53dd546\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-06f36c9 elementor-widget elementor-widget-text-editor\" data-id=\"06f36c9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>SOURCES:<\/strong><\/p>\n<ol>\n<li>Ribereau-Gayon, P.; Gloires, Y. ; Maujean, A.; Dobourdieu, D. La Chimie du Vin. Dans Handbook of Enology, 2e \u00e9d.; John Wiley &amp; Sons, Inc. : Hoboken, NJ, \u00c9tats-Unis, 2006 ; Volume 2, p. 3\u201310.<\/li>\n<li>Zoecklien, B.W. ; Fugelsang, K.C. ; Gump, BH ; Nury, F. S. Analyse et production de vin, 1\u00e8re \u00e9d. ; Springer : Boston, MA, \u00c9tats-Unis, 1999 ; pp. 192\u2013198.<\/li>\n<li><a href=\"https:\/\/narodne-novine.nn.hr\/clanci\/sluzbeni\/2022_07_81_1183.html\">https:\/\/narodne-novine.nn.hr\/clanci\/sluzbeni\/2022_07_81_1183.html<\/a><\/li>\n<li>Amerine, MA ; Ough, C.S. (1980) M\u00e9thodes d&rsquo;analyse des mo\u00fbts et des vins. New York Wiley-Interscience.<\/li>\n<li>Coulter, A. 2020. Demandez \u00e0 l&rsquo;AWRI : Divergences dans les r\u00e9sultats analytiques pour l&rsquo;acidit\u00e9 volatile Aust. N.Z. Viticulteur Vigneron (674) : p.64.<\/li>\n<li>Coulter, A. 2018. Demandez \u00e0 l&rsquo;AWRI : Acidit\u00e9 volatile. Aust. N.Z. Viticulteur Vigneron (648) : p. 16.<\/li>\n<\/ol>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-222ace9 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"222ace9\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-6472038\" data-id=\"6472038\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1b875cb elementor-widget elementor-widget-image\" data-id=\"1b875cb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"252\" height=\"74\" src=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2022\/08\/Logo-Hanna-Inst.jpg\" class=\"attachment-large size-large wp-image-177342\" alt=\"\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-96a06fd elementor-widget elementor-widget-text-editor\" data-id=\"96a06fd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Avec un excellent produit, d&rsquo;excellents r\u00e9sultats<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-bd86b26\" data-id=\"bd86b26\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-a62f551 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a62f551\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-99063b0\" data-id=\"99063b0\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a459113 elementor-widget elementor-widget-heading\" data-id=\"a459113\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Service <\/h2>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-5ed54ac elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5ed54ac\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-782af90\" data-id=\"782af90\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7c8336b elementor-widget elementor-widget-heading\" data-id=\"7c8336b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Entra\u00eenement<\/h2>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-05b9dc0 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"05b9dc0\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-006f60f\" data-id=\"006f60f\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-eefa73d elementor-widget elementor-widget-heading\" data-id=\"eefa73d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">R\u00e9paration<\/h2>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-cc37444 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"cc37444\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-3b23d23\" data-id=\"3b23d23\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1b3c3fd elementor-widget elementor-widget-heading\" data-id=\"1b3c3fd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Maintenance<\/h2>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>L&rsquo;acidit\u00e9 volatile (VA) est l&rsquo;un des param\u00e8tres les plus importants d\u00e9termin\u00e9s lors de la production [&hellip;]<\/p>\n","protected":false},"author":17,"featured_media":202723,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[560,561],"tags":[96,60],"class_list":["post-202886","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-beverage","category-boisson","tag-titrateurs","tag-titrators"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Acides volatils dans le vin : diff\u00e9rence entre les m\u00e9thodes au titrateur et au spectrophotom\u00e8tre - Hanna Instruments Maroc<\/title>\n<meta name=\"description\" content=\"La fermentation technique des vins rouges peut \u00eatre r\u00e9alis\u00e9e dans diff\u00e9rents types de fermenteurs. La proc\u00e9dure classique (fermentation discontinue) implique le d\u00e9veloppement simultan\u00e9 de la fermentation et de la mac\u00e9ration. Il peut s&#039;agir d&#039;une fermentation ouverte (r\u00e9cipients ouverts, acc\u00e8s \u00e0 l&#039;air libre) et d&#039;une fermentation ferm\u00e9e (r\u00e9cipients ferm\u00e9s sans acc\u00e8s \u00e0 l&#039;air).\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.hannaservice.eu\/fr\/acides-volatils-dans-le-vin-difference-entre-les-methodes-au-titrateur-et-au-spectrophotometre\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Acides volatils dans le vin : diff\u00e9rence entre les m\u00e9thodes au titrateur et au spectrophotom\u00e8tre\" \/>\n<meta property=\"og:description\" content=\"L&#039;acidit\u00e9 volatile (VA) est l&#039;un des param\u00e8tres les plus importants d\u00e9termin\u00e9s lors de la production et du stockage du vin. Il est important en raison de la stabilit\u00e9 chimique et microbiologique du vin, en pr\u00e9servant son go\u00fbt et sa couleur sp\u00e9cifiques, et il est li\u00e9 \u00e0 la qualit\u00e9 du vin.Si vous voulez en savoir plus sur les acides volatils dans le vin, vous trouverez tout ce dont vous avez besoin dans notre nouveau blog !\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blog.hannaservice.eu\/fr\/acides-volatils-dans-le-vin-difference-entre-les-methodes-au-titrateur-et-au-spectrophotometre\/\" \/>\n<meta property=\"og:site_name\" content=\"Hanna Instruments Maroc\" \/>\n<meta property=\"article:published_time\" content=\"2023-03-14T10:35:36+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-05-03T13:49:46+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/03\/WhatsApp-Image-2023-05-03-at-12.53.48.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"630\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Alan Curtis\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Alan Curtis\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/blog.hannaservice.eu\/fr\/acides-volatils-dans-le-vin-difference-entre-les-methodes-au-titrateur-et-au-spectrophotometre\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/blog.hannaservice.eu\/fr\/acides-volatils-dans-le-vin-difference-entre-les-methodes-au-titrateur-et-au-spectrophotometre\/\"},\"author\":{\"name\":\"Alan Curtis\",\"@id\":\"https:\/\/blog.hannaservice.eu\/fr\/#\/schema\/person\/675987b8b5fd7dfbc3ccca6b0bd2d486\"},\"headline\":\"Acides volatils dans le vin : diff\u00e9rence entre les m\u00e9thodes au titrateur et au spectrophotom\u00e8tre\",\"datePublished\":\"2023-03-14T10:35:36+00:00\",\"dateModified\":\"2023-05-03T13:49:46+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/blog.hannaservice.eu\/fr\/acides-volatils-dans-le-vin-difference-entre-les-methodes-au-titrateur-et-au-spectrophotometre\/\"},\"wordCount\":1243,\"publisher\":{\"@id\":\"https:\/\/blog.hannaservice.eu\/fr\/#organization\"},\"image\":{\"@id\":\"https:\/\/blog.hannaservice.eu\/fr\/acides-volatils-dans-le-vin-difference-entre-les-methodes-au-titrateur-et-au-spectrophotometre\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/03\/wine-storage.jpg\",\"keywords\":[\"Titrateurs\",\"Titrators\"],\"articleSection\":[\"Beverage\",\"Boisson\"],\"inLanguage\":\"fr-FR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/blog.hannaservice.eu\/fr\/acides-volatils-dans-le-vin-difference-entre-les-methodes-au-titrateur-et-au-spectrophotometre\/\",\"url\":\"https:\/\/blog.hannaservice.eu\/fr\/acides-volatils-dans-le-vin-difference-entre-les-methodes-au-titrateur-et-au-spectrophotometre\/\",\"name\":\"Acides volatils dans le vin : diff\u00e9rence entre les m\u00e9thodes au titrateur et au spectrophotom\u00e8tre - Hanna Instruments Maroc\",\"isPartOf\":{\"@id\":\"https:\/\/blog.hannaservice.eu\/fr\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/blog.hannaservice.eu\/fr\/acides-volatils-dans-le-vin-difference-entre-les-methodes-au-titrateur-et-au-spectrophotometre\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/blog.hannaservice.eu\/fr\/acides-volatils-dans-le-vin-difference-entre-les-methodes-au-titrateur-et-au-spectrophotometre\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/03\/wine-storage.jpg\",\"datePublished\":\"2023-03-14T10:35:36+00:00\",\"dateModified\":\"2023-05-03T13:49:46+00:00\",\"description\":\"La fermentation technique des vins rouges peut \u00eatre r\u00e9alis\u00e9e dans diff\u00e9rents types de fermenteurs. 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