{"id":3180,"date":"2026-03-04T14:45:42","date_gmt":"2026-03-04T13:45:42","guid":{"rendered":"https:\/\/kkuipmd.cluster100.hosting.ovh.net\/map-protective-atmosphere-packaging\/"},"modified":"2026-03-24T09:51:26","modified_gmt":"2026-03-24T08:51:26","slug":"map-protective-atmosphere-packaging","status":"publish","type":"post","link":"https:\/\/befor.fr\/en\/map-protective-atmosphere-packaging\/","title":{"rendered":"Protective atmosphere packaging (MAP): principles, gases, equipment and best practices"},"content":{"rendered":"<h2 class=\"wp-block-heading\" id=\"l-emballage-sous-atmosphere-protectrice-map-principe-gaz-equipements-et-bonnes-pratiques\">Protective atmosphere packaging (MAP): principles, gases, equipment and best practices<\/h2><p><strong>Mise sous Atmosph\u00e8re Protectrice (MAP)<\/strong> &#8211; also known as <em>Modified Atmosphere Packaging<\/em> &#8211; is a preservation technique that involves <strong>replacing the air (and therefore oxygen)<\/strong> in a tray with a <strong>specific gas mixture<\/strong>, before <strong>hermetically sealing<\/strong>. The aim is to extend the best-before date while preserving the product&#8217;s appearance, texture and quality. <\/p><div class=\"wp-block-columns are-vertically-aligned-center is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66%\"><blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p><strong>Remember<\/strong>: MAP is not a vacuum pack. Here, the gas also acts as a <strong>cushion<\/strong> to preserve product volume and presentation. <\/p><\/blockquote><\/div>\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:34%\"><div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\"><div class=\"wp-block-button has-custom-width wp-block-button__width-100\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/befor.fr\/en\/contact-us\/\">Learn more<\/a><\/div><\/div>\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\"><div class=\"wp-block-button has-custom-width wp-block-button__width-100 is-style-outline is-style-outline--1\"><a class=\"wp-block-button__link wp-element-button\" href=\"#faq-map\">See FAQ<\/a><\/div><\/div><\/div><\/div><hr class=\"wp-block-separator has-css-opacity\"\/><h2 class=\"wp-block-heading\" id=\"sommaire\">Contents<\/h2><ul class=\"wp-block-list\"><li><a href=\"#definition-map\">Definition and principle<\/a><\/li>\n\n<li><a href=\"#cycle-map\">Operating cycle<\/a><\/li>\n\n<li><a href=\"#avantages-map\">Advantages: MAP vs. conventional sealing<\/a><\/li>\n\n<li><a href=\"#gaz-map\">Choosing the right gas mix<\/a><\/li>\n\n<li><a href=\"#equipements-map\">Essential equipment and consumables<\/a><\/li>\n\n<li><a href=\"#erreurs-map\">Common mistakes (and how to avoid them)<\/a><\/li>\n\n<li><a href=\"#faq-map\">FAQ + Schema<\/a><\/li>\n\n<li><a href=\"#ensavoirplus-map\">Learn more<\/a><\/li><\/ul><hr class=\"wp-block-separator has-css-opacity\"\/><h2 class=\"wp-block-heading\" id=\"definition-map\">Definition and principle<\/h2><p>MAP involves <strong>replacing the air<\/strong> in a tray with a gas mixture (often <strong>Nitrogen (N\u2082)<\/strong> + <strong>CO\u2082,<\/strong> sometimes <strong>O\u2082<\/strong> depending on the product), then <strong>sealing<\/strong> the tray with a suitable film.<\/p><div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><h3 class=\"wp-block-heading\" id=\"gaz-utilises-role-rapide\">Gases used (fast role)<\/h3>\n\n<ul class=\"wp-block-list\"><li><strong>N\u2082 (Nitrogen)<\/strong>: neutral gas, limits oxidation, &#8220;cushion&#8221; effect.<\/li>\n\n<li><strong>CO\u2082<\/strong>: bacteriostatic effect (inhibits microbial growth).<\/li>\n\n<li><strong>O\u2082<\/strong>: color maintenance (e.g. red meats according to specifications).<\/li><\/ul><\/div>\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><h3 class=\"wp-block-heading\" id=\"ce-que-le-map-change-reellement\">What MAP really changes<\/h3>\n\n<ul class=\"wp-block-list\"><li>Less oxygen \u2192 <strong>less oxidation<\/strong>.<\/li>\n\n<li>Atmosphere mastered \u2192 <strong>DLC increased<\/strong>.<\/li>\n\n<li>Uncompressed product \u2192 <strong>better presentation<\/strong>.<\/li><\/ul><\/div><\/div><h2 class=\"wp-block-heading\" id=\"cycle-map\">Operating cycle (6 stages)<\/h2><p>A MAP machine generally performs the following cycle:<\/p><ol class=\"wp-block-list\"><li><strong>Closing the bell<\/strong><\/li>\n\n<li><strong>Vacuum<\/strong>: extraction of air (oxygen)<\/li>\n\n<li><strong>Gas injection<\/strong>: introducing the protective mixture<\/li>\n\n<li><strong>Sealing<\/strong>: welding the film to the tray<\/li>\n\n<li><strong>Gradual atmosphere release<\/strong><\/li>\n\n<li><strong>Reopening<\/strong><\/li><\/ol><h2 class=\"wp-block-heading\" id=\"avantages-map\">Key benefits (MAP vs. conventional sealing)<\/h2><figure class=\"wp-block-table\"><table><thead><tr><th>Profit<\/th><th>In concrete terms<\/th><\/tr><\/thead><tbody><tr><td><strong>Extended CSD<\/strong><\/td><td>Often <strong>3 to 5\u00d7<\/strong> longer, depending on product and process.<\/td><\/tr><tr><td><strong>Product quality<\/strong><\/td><td>Preserves textures and presentation (unlike vacuum-packed bags, which can compress).<\/td><\/tr><tr><td><strong>Health and safety<\/strong><\/td><td>Slows down aerobic bacteria and molds responsible for fermentation.<\/td><\/tr><tr><td><strong>Logistics<\/strong><\/td><td>Facilitates delivery further afield and reduces waste.<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\" id=\"gaz-map\">Gas mixture guide (by product)<\/h2><p>The right mix depends on the product, its sensitivity to oxidation, the target BBD and presentation constraints.<\/p><div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><h3 class=\"wp-block-heading\" id=\"produits-secs-chips-biscuits\">Dry products (chips, cookies)<\/h3>\n\n<p><strong>100% N\u2082<\/strong>: prevents rancidity and protects mechanically (&#8220;cushion&#8221; effect).<\/p>\n\n<h3 class=\"wp-block-heading\" id=\"plats-cuisines-pates-charcuterie\">Prepared dishes, pasta, cold cuts<\/h3>\n\n<p><strong>N\u2082 + CO\u2082<\/strong>: CO\u2082 inhibits microbial growth.<\/p><\/div>\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><h3 class=\"wp-block-heading\" id=\"viandes-rouges\">Red meats<\/h3>\n\n<p>Blend richer in <strong>O\u2082<\/strong> to maintain bright red color (depending on configuration and machine constraints).<\/p>\n\n<h3 class=\"wp-block-heading\" id=\"vegetaux-frais\">Fresh plants<\/h3>\n\n<p><strong>Minimum-breathing<\/strong> atmosphere (calibrated according to product).<\/p><\/div><\/div><blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p><strong>\ud83d\udca1 Conseil &#8220;pro<\/strong><\/p>\n\n<p>MAP is more than just &#8220;injecting gas&#8221;. For stable results, align <strong>recipe + target BBD + barrier consumables + machine settings<\/strong>. <\/p><\/blockquote><h2 class=\"wp-block-heading\" id=\"equipements-map\">Essential equipment and consumables<\/h2><div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><h3 class=\"wp-block-heading\" id=\"equipement\">Equipment<\/h3>\n\n<ul class=\"wp-block-list\"><li>MAP-equipped heat sealer (bell + high-performance pump).<\/li>\n\n<li>Suitable gas <strong>pressure regulator<\/strong> to connect the cylinder.<\/li>\n\n<li>Hygienic design (food-grade stainless steel, easy to clean).<\/li><\/ul><\/div>\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><h3 class=\"wp-block-heading\" id=\"consommables-barrieres\">Barrier&#8221; consumables<\/h3>\n\n<ul class=\"wp-block-list\"><li><strong>Barrier trays<\/strong>: limit gas diffusion through the plastic.<\/li>\n\n<li><strong>High-barrier lidding films<\/strong>: preserve the injected mixture over time.<\/li><\/ul><\/div><\/div><h2 class=\"wp-block-heading\" id=\"erreurs-map\">Common mistakes (and how to avoid them)<\/h2><div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><h3 class=\"wp-block-heading\" id=\"les-pieges-classiques\">Classic traps<\/h3>\n\n<ul class=\"wp-block-list\"><li>Use <strong>non-barrier<\/strong> trays\/films: gas escapes.<\/li>\n\n<li>Choose the mixture &#8220;at random&#8221;: unstable results in terms of CSD and rendering.<\/li>\n\n<li>Approximate machine settings: inconsistent residual O\u2082 rate.<\/li>\n\n<li>Do not test under real-life conditions (cold, transport, delays).<\/li><\/ul><\/div>\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><h3 class=\"wp-block-heading\" id=\"la-methode-simple-pour-securiser\">The simple way to secure<\/h3>\n\n<ol class=\"wp-block-list\"><li>Define <strong>the product<\/strong> and the <strong>target BBD<\/strong>.<\/li>\n\n<li>Validate the <strong>tray + film<\/strong> combination (high barrier).<\/li>\n\n<li>Define the mix with a gas partner and\/or your quality approach.<\/li>\n\n<li>Test 2-3 settings (vacuum\/gas\/welding time) and check repeatability.<\/li><\/ol><\/div><\/div><hr class=\"wp-block-separator has-css-opacity\"\/><h2 class=\"wp-block-heading\" id=\"faq-map\">FAQ (SEO optimized)<\/h2><h3 class=\"wp-block-heading\" id=\"le-map-remplace-t-il-le-sous-vide\">Does MAP replace sous-vide?<\/h3><p>No. MAP is particularly suitable when presentation needs to remain intact, as the gas preserves volume. Sous-vide bags are still very effective at blocking oxygen, but can compress certain products.  <\/p><h3 class=\"wp-block-heading\" id=\"pourquoi-faut-il-des-consommables-barrieres\">Why do we need &#8220;barrier&#8221; consumables?<\/h3><p>Because some plastics let oxygen and CO\u2082 diffuse: without a barrier, the injected mixture escapes, and MAP&#8217;s benefits diminish.<\/p><h3 class=\"wp-block-heading\" id=\"quels-produits-beneficient-le-plus-du-map\">Which products benefit most from MAP?<\/h3><p>Products sensitive to oxidation and\/or microbial growth, as well as those requiring impeccable presentation (ready-made meals, cold meats, meats, fragile products).<\/p><script type=\"application\/ld+json\">{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Le MAP remplace-t-il le sous-vide ?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Non. Le MAP est adapt\u00e9 lorsque la pr\u00e9sentation doit rester intacte, car le gaz pr\u00e9serve le volume. Le sous-vide en sachet est tr\u00e8s performant pour bloquer l\u2019oxyg\u00e8ne, mais peut comprimer certains produits.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Pourquoi faut-il des consommables \u00ab barri\u00e8res \u00bb en MAP ?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Parce que certains plastiques laissent diffuser l\u2019oxyg\u00e8ne et le CO\u2082. Sans barri\u00e8re, le m\u00e9lange inject\u00e9 s\u2019\u00e9chappe et les b\u00e9n\u00e9fices du MAP diminuent.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Quels produits b\u00e9n\u00e9ficient le plus du MAP ?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Les produits sensibles \u00e0 l\u2019oxydation et\/ou \u00e0 la croissance microbienne, ainsi que ceux n\u00e9cessitant une pr\u00e9sentation impeccable (plats pr\u00e9par\u00e9s, charcuterie, viandes, produits fragiles).\"\n      }\n    }\n  ]\n}\n<\/script><hr class=\"wp-block-separator has-css-opacity\"\/><h2 class=\"wp-block-heading\" id=\"ensavoirplus-map\">Learn more<\/h2><p>Would you like to know if MAP is right for your products, your trays and your output? We can guide you towards the most appropriate solution (technology, consumables, settings, best practices). <\/p><div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\"><div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/befor.fr\/en\/contact-us\/\">Learn more<\/a><\/div>\n\n<div class=\"wp-block-button is-style-outline is-style-outline--2\"><a class=\"wp-block-button__link wp-element-button\" href=\"#sommaire\">Back to contents<\/a><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Protective atmosphere packaging (MAP): principles, gases, equipment and best practices Mise sous Atmosph\u00e8re Protectrice (MAP) &#8211; also known as Modified Atmosphere Packaging &#8211; is a preservation technique that involves replacing the air (and therefore oxygen) in a tray with a specific gas mixture, before hermetically sealing. The aim is to extend the best-before date while [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_gspb_post_css":"","footnotes":""},"categories":[296],"tags":[],"class_list":["post-3180","post","type-post","status-publish","format-standard","hentry","category-technologies"],"blocksy_meta":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>MAP packaging: gases, equipment and conservation principles | Befor<\/title>\n<meta name=\"description\" content=\"Guide to protective atmosphere packaging: principles, gases and equipment for MAP packaging.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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