{"id":5247,"date":"2026-04-13T12:24:59","date_gmt":"2026-04-13T16:24:59","guid":{"rendered":"https:\/\/laboratorytesting.com\/?page_id=5247"},"modified":"2026-04-13T12:29:10","modified_gmt":"2026-04-13T16:29:10","slug":"microbial-volatile-organic-compounds","status":"publish","type":"page","link":"https:\/\/laboratorytesting.com\/fr\/resources\/ih\/vocs\/microbial-volatile-organic-compounds\/","title":{"rendered":"Compos\u00e9s organiques volatils microbiens"},"content":{"rendered":"<div data-elementor-type=\"wp-page\" data-elementor-id=\"5247\" class=\"elementor elementor-5247\" data-elementor-settings=\"{&quot;ha_cmc_init_switcher&quot;:&quot;no&quot;}\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f0777b3 bg-four-corner-image elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f0777b3\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;_ha_eqh_enable&quot;:false}\">\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-4760a46\" data-id=\"4760a46\" 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-4f2fe9f elementor-widget elementor-widget-heading\" data-id=\"4f2fe9f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Compos\u00e9s organiques volatils microbiens<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-13cae54 elementor-widget elementor-widget-image\" data-id=\"13cae54\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1440\" height=\"547\" src=\"https:\/\/laboratorytesting.com\/wp-content\/uploads\/2026\/04\/microbial-volatile-organic-compounds.jpg\" class=\"attachment-full size-full wp-image-5249\" alt=\"\" srcset=\"https:\/\/laboratorytesting.com\/wp-content\/uploads\/2026\/04\/microbial-volatile-organic-compounds.jpg 1440w, https:\/\/laboratorytesting.com\/wp-content\/uploads\/2026\/04\/microbial-volatile-organic-compounds-300x114.jpg 300w, https:\/\/laboratorytesting.com\/wp-content\/uploads\/2026\/04\/microbial-volatile-organic-compounds-1024x389.jpg 1024w, https:\/\/laboratorytesting.com\/wp-content\/uploads\/2026\/04\/microbial-volatile-organic-compounds-768x292.jpg 768w, https:\/\/laboratorytesting.com\/wp-content\/uploads\/2026\/04\/microbial-volatile-organic-compounds-600x228.jpg 600w\" sizes=\"(max-width: 1440px) 100vw, 1440px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3c6595c elementor-widget elementor-widget-text-editor\" data-id=\"3c6595c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Il a \u00e9t\u00e9 d\u00e9montr\u00e9 que certains micro-organismes produisent des compos\u00e9s organiques volatils microbiens (COVM) caract\u00e9ristiques et uniques. Les odeurs produites par ces micro-organismes peuvent \u00eatre attribu\u00e9es \u00e0 des COVM sp\u00e9cifiques, produits par certaines esp\u00e8ces.<\/p><p>Les micro-organismes cultiv\u00e9s en laboratoire peuvent produire des COV microbiens diff\u00e9rents de ceux qui se d\u00e9veloppent naturellement dans les mat\u00e9riaux de construction. La production de COV microbiens peut \u00eatre tr\u00e8s variable selon les conditions de culture, notamment le substrat, la temp\u00e9rature et la comp\u00e9tition avec d&#039;autres micro-organismes.<\/p><p>Il a \u00e9t\u00e9 d\u00e9montr\u00e9 que les COV microbiens provenant de champignons et de bact\u00e9ries p\u00e9n\u00e8trent les barri\u00e8res pare-vapeur en plastique utilis\u00e9es dans la construction r\u00e9sidentielle actuelle.<\/p><p>Les COV peuvent \u00e9galement provenir de sources non vivantes, certains \u00e9tant couramment utilis\u00e9s comme solvants \u00e0 la maison, au bureau et dans l&#039;industrie. Les COV microbiens (COVM) sont aussi des compos\u00e9s fr\u00e9quents pr\u00e9sents dans les produits de nettoyage, les peintures, les adh\u00e9sifs et l&#039;essence. Outre les micro-organismes, de nombreuses sources de COV existent \u00e0 l&#039;int\u00e9rieur des habitations\u00a0: peintures, vernis, produits de nettoyage, solvants, textiles, moquettes, plastiques, mat\u00e9riaux de construction et combustion domestique.<\/p><p>Il existe deux principales m\u00e9thodes de pr\u00e9l\u00e8vement des COV microbiens. La premi\u00e8re consiste \u00e0 pr\u00e9lever un \u00e9chantillon d&#039;air total dans un r\u00e9cipient en acier inoxydable, tel qu&#039;une cartouche SUMMA ou une mini-cartouche. Le pr\u00e9l\u00e8vement est simple et peut \u00eatre effectu\u00e9 au domicile ou au bureau du client, puis l&#039;\u00e9chantillon est exp\u00e9di\u00e9 au laboratoire pour analyse par pr\u00e9concentration cryog\u00e9nique coupl\u00e9e \u00e0 la GC\/MS (TO-15). La seconde m\u00e9thode consiste \u00e0 d\u00e9poser l&#039;\u00e9chantillon d&#039;air sur un sorbant solide contenu dans un tube en verre. Ces tubes sont disponibles dans le commerce chez SKC et d&#039;autres fournisseurs. Cette m\u00e9thode pr\u00e9sente toutefois une difficult\u00e9\u00a0: il est imp\u00e9ratif d&#039;associer le COV microbien au sorbant et au solvant de d\u00e9sorption appropri\u00e9s.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-617fb8e elementor-widget elementor-widget-heading\" data-id=\"617fb8e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Strat\u00e9gies de collecte MVOC<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ba6af7c elementor-widget elementor-widget-text-editor\" data-id=\"ba6af7c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Air entier<\/strong><br \/>Lors de l&#039;utilisation de la m\u00e9thode d&#039;\u00e9chantillonnage de l&#039;air total, l&#039;humidit\u00e9 atmosph\u00e9rique doit \u00eatre relativement faible. Des concentrations \u00e9lev\u00e9es d&#039;humidit\u00e9 peuvent perturber le processus de concentration cryog\u00e9nique et compliquer l&#039;analyse GC\/MS. En pr\u00e9sence d&#039;odeurs perceptibles, l&#039;analyse de l&#039;air total peut s&#039;av\u00e9rer pertinente. De plus, si une analyse GC\/MS \u00e0 large spectre des COV microbiens inconnus est souhait\u00e9e, cette approche constitue un outil analytique pr\u00e9cieux. Les informations obtenues couvrent un large \u00e9ventail de micro-organismes et fournissent des donn\u00e9es qualitatives utiles sur les COV microbiens. Enfin, l&#039;analyse de l&#039;air total permet d&#039;obtenir des informations g\u00e9n\u00e9rales sur l&#039;exposition et ses implications sanitaires.<\/p><p><strong>Collection de tubes absorbants<\/strong><br \/>Lors de l&#039;utilisation de la m\u00e9thode du tube sorbant, il serait utile de conna\u00eetre l&#039;organisme cible. Les COVM actuellement analys\u00e9s proviennent d&#039;esp\u00e8ces d&#039;AsPen.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\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<\/div>","protected":false},"excerpt":{"rendered":"<p>Microbial Volatile Organic Compounds It has been shown that certain microorganisms produce characteristically unique microbial volatile organic compounds also known as MVOCs. The odors that microorganisms produce may be attributable to distinct MVOCs produced by certain species of microorganisms. Microorganisms [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":5237,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"content-type":"","footnotes":""},"class_list":["post-5247","page","type-page","status-publish","hentry","slug-microbial-volatile-organic-compounds","odd_post_id"],"_links":{"self":[{"href":"https:\/\/laboratorytesting.com\/fr\/wp-json\/wp\/v2\/pages\/5247","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/laboratorytesting.com\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/laboratorytesting.com\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/laboratorytesting.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/laboratorytesting.com\/fr\/wp-json\/wp\/v2\/comments?post=5247"}],"version-history":[{"count":4,"href":"https:\/\/laboratorytesting.com\/fr\/wp-json\/wp\/v2\/pages\/5247\/revisions"}],"predecessor-version":[{"id":5252,"href":"https:\/\/laboratorytesting.com\/fr\/wp-json\/wp\/v2\/pages\/5247\/revisions\/5252"}],"up":[{"embeddable":true,"href":"https:\/\/laboratorytesting.com\/fr\/wp-json\/wp\/v2\/pages\/5237"}],"wp:attachment":[{"href":"https:\/\/laboratorytesting.com\/fr\/wp-json\/wp\/v2\/media?parent=5247"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}