{"id":67036,"date":"2026-02-16T12:15:44","date_gmt":"2026-02-16T11:15:44","guid":{"rendered":"https:\/\/www.hiperbaric.com\/?p=67036"},"modified":"2026-02-26T12:16:32","modified_gmt":"2026-02-26T11:16:32","slug":"high%e2%80%91pressure-processing-hpp-for-cheese-food-safety-shelf-life-and-room-for-innovation","status":"publish","type":"post","link":"https:\/\/www.hiperbaric.com\/en\/high%e2%80%91pressure-processing-hpp-for-cheese-food-safety-shelf-life-and-room-for-innovation\/","title":{"rendered":"High\u2011Pressure Processing (HPP) for Cheese: Food Safety, Shelf Life, and Room for Innovation"},"content":{"rendered":"<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-67060\" src=\"https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Cheese_FSN_Cover_ENG-300x169.jpg\" alt=\"\" width=\"600\" height=\"338\" srcset=\"https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Cheese_FSN_Cover_ENG-300x169.jpg 300w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Cheese_FSN_Cover_ENG-1024x576.jpg 1024w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Cheese_FSN_Cover_ENG-768x432.jpg 768w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Cheese_FSN_Cover_ENG-1536x864.jpg 1536w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Cheese_FSN_Cover_ENG-1260x709.jpg 1260w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Cheese_FSN_Cover_ENG-630x354.jpg 630w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Cheese_FSN_Cover_ENG-420x236.jpg 420w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Cheese_FSN_Cover_ENG-840x473.jpg 840w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Cheese_FSN_Cover_ENG-315x177.jpg 315w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Cheese_FSN_Cover_ENG.jpg 1920w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/p>\n<p>Cheese is a nutrient\u2011dense food that concentrates <strong>high<\/strong><strong>\u2011<\/strong><strong>quality proteins<\/strong>, <strong>calcium<\/strong> and <strong>phosphorus<\/strong>, and <strong>fat<\/strong><strong>\u2011<\/strong><strong>soluble vitamins<\/strong> such as vitamin D, while offering a remarkable range of textures and flavors shaped by milk composition, starter cultures, and ripening. Its value goes beyond nutrition: cheese is strongly tied to tradition, regional identity, and economic relevance, with many protected or heritage varieties relying on unique characteristics and manufacturing practices.<\/p>\n<p>Despite its long tradition, cheese is not immune to <strong>microbiological spoilage<\/strong> and <strong>food safety hazards<\/strong>, especially when contamination occurs after curd formation or during handling and packaging. Recent market events in the United States highlight a global risk:<\/p>\n<ul>\n<li>In 2024, there were <strong>six market recalls<\/strong> and <strong>two foodborne outbreaks<\/strong> with 37 hospitalizations and 2 deaths linked to cheese consumption.<\/li>\n<li>In 2025, an increase in market recalls was reported, <strong>rising to eight<\/strong>.<\/li>\n<\/ul>\n<p>The presence or potential presence of pathogens such as <strong><em>Listeria monocytogenes<\/em><\/strong>, enterohaemorrhagic <strong><em>Escherichia coli<\/em><\/strong>, or <strong><em>Salmonella<\/em> spp.<\/strong> was behind these outbreaks and market recalls. Against this backdrop, <strong>High<\/strong><strong>\u2011<\/strong><strong>Pressure Processing (HPP)<\/strong> has emerged as a practical, nonthermal intervention to improve safety and stability while helping preserve the sensory traits consumers associate with \u201cfresh\u201d or traditionally crafted products.<\/p>\n<h2>HPP to Ensure Food Safety<\/h2>\n<p>HPP improves cheese safety mainly by inactivating vegetative pathogens <strong>in the packaged product<\/strong>, reducing risk from post\u2011packaging contamination. <strong>In fresh, high<\/strong><strong>\u2011<\/strong><strong>moisture cheeses<\/strong>, this is especially relevant for <em>L. monocytogenes<\/em>, which can persist and grow under refrigeration.<\/p>\n<ul>\n<li>For example, in a commercial <strong>starter<\/strong><strong>\u2011<\/strong><strong>free fresh cheese<\/strong>, <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0740002017302873\">Evert\u2011Arriagada et al. (2018)<\/a> evaluated <em> monocytogenes <\/em>at 6000 bar (87 kpsi) for 5 min and reported a <strong>4.4 log<sub>10<\/sub> reduction<\/strong> following HPP treatment.<\/li>\n<li>In <strong>Queso Fresco<\/strong>, <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0022030214000484\">Tomasula et al. (2014)<\/a> found that processing at 6000 bar (87 kpsi) for 3 min achieved a <strong>3 <\/strong>and <strong>4.1 log<sub>10<\/sub> reduction<\/strong> of <em>L. monocytogenes<\/em> when the curd and the surface of the final cheese were artificially inoculated with the pathogen, respectively <strong>(Figure 1)<\/strong>.<\/li>\n<li>Studies on <strong>raw-milk ripened cheeses<\/strong> produced with milk deliberately inoculated with <em> coli<\/em> and <em>L. monocytogenes<\/em> demonstrated that processing at 5000 bar (72.5 kpsi) for 5 min, following 50 days of ripening, resulted in a reduction of both pathogens by <strong>5 to 6 log\u2081\u2080<\/strong> (<a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0958694604002845\">Arqu\u00e9s et al. 2005<\/a>; <a href=\"https:\/\/journals.asm.org\/doi\/full\/10.1128\/aem.71.7.3399-3404.2005\">Rodr\u00edguez et al. 2005<\/a>).<\/li>\n<\/ul>\n<figure id=\"attachment_67038\" aria-describedby=\"caption-attachment-67038\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" loading=\"lazy\" class=\"wp-image-67038\" src=\"https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-1_cheese-300x195.jpg\" alt=\"Figure 1. Inactivation of L. monocytogenes in Queso Fresco following inoculation either within the curd or on the surface of the finished cheese.\" width=\"600\" height=\"389\" srcset=\"https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-1_cheese-300x195.jpg 300w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-1_cheese-1024x664.jpg 1024w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-1_cheese-768x498.jpg 768w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-1_cheese-1536x996.jpg 1536w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-1_cheese-2048x1329.jpg 2048w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-1_cheese-1260x817.jpg 1260w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-1_cheese-630x409.jpg 630w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-1_cheese-420x272.jpg 420w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-1_cheese-840x545.jpg 840w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-1_cheese-315x204.jpg 315w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-67038\" class=\"wp-caption-text\"><strong>Figure 1<\/strong>. Inactivation of L. monocytogenes in Queso Fresco following inoculation either within the curd or on the surface of the finished cheese.<\/figcaption><\/figure>\n<h2>HPP to Extend Shelf Life<\/h2>\n<p>Shelf life in cheese is often limited by spoilage <strong>yeasts<\/strong> and <strong>molds<\/strong>, growth of <strong>residual bacteria<\/strong>, and defects such as <strong>gas formation<\/strong> (<em>i.e.<\/em> late blowing) or <strong>off<\/strong><strong>\u2011<\/strong><strong>odors<\/strong>. Multiple studies show HPP can delay these outcomes by reducing spoilage populations and, in some products, slowing biological activity during refrigerated storage.<\/p>\n<ul>\n<li><strong>Fresh lactic curd cheese<\/strong> made from pasteurized cow&#8217;s milk was treated at 6000 bar (87 kpsi) for 5 min, resulting in a reduction of the starter culture (<em>Lactococcus<\/em>) by more than 6 log<sub>10<\/sub> <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S1466856407001282\">(Daryaei et al. 2008)<\/a>. HPP stopped yeast growth for <strong>up to 60 days<\/strong> in cold storage, while untreated cheese had over 5 log<sub>10<\/sub> CFU\/g after just 20 days.<\/li>\n<li>For <strong>fresh goat\u2019s milk cheese<\/strong> inoculated with <em> coli<\/em>, <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0362028X22043216\">Capellas et\u202fal. (1996)<\/a> found that no surviving <em>E. coli<\/em><strong> (&gt;8 log<sub>10<\/sub> reduction)<\/strong> was detected at 15, 30, or 60 days after HPP at 5000 bar (72 kpsi) for 5 min, and that aerobic mesophilic counts remained in the 2-3 log CFU\/g range.<\/li>\n<li><strong>Queso Fresco<\/strong> made from pasteurized cow\u2019s milk subjected to 6000 bar (87 kpsi) for 3 min achieved a shelf life of <strong>up to<\/strong> <strong>84 days<\/strong> at 4 \u00b0C (39 \u00b0F), whereas unprocessed controls reached an aerobic mesophile concentration of more than 5 log<sub>10<\/sub> CFU\/g after 54 days. Therefore, HPP extended the shelf life by 50% <strong>(Figure 2) <\/strong><a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0022030214000484\">(Tomasula et al. 2014)<\/a>.<\/li>\n<li>In <strong>semi<\/strong><strong>\u2011<\/strong><strong>hard industrial cheeses<\/strong> artificially inoculated with <em>Clostridium tyrobutyricum<\/em>, <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S0740002016302933\">\u00c1vila et al. (2016)<\/a> reported that processing at 3000 bar (43.5 kpsi) for 10 min prevented late blowing symptoms, with organic acid and volatile profiles comparable to controls.<\/li>\n<\/ul>\n<figure id=\"attachment_67041\" aria-describedby=\"caption-attachment-67041\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" loading=\"lazy\" class=\"wp-image-67041\" src=\"https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-2_cheese-300x195.jpg\" alt=\"Figure 2. Aerobic mesophile concentrations on unprocessed and high-pressure processed Queso Fresco throughout refrigerated storage.\" width=\"600\" height=\"389\" srcset=\"https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-2_cheese-300x195.jpg 300w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-2_cheese-1024x664.jpg 1024w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-2_cheese-768x498.jpg 768w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-2_cheese-1536x996.jpg 1536w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-2_cheese-2048x1329.jpg 2048w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-2_cheese-1260x817.jpg 1260w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-2_cheese-630x409.jpg 630w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-2_cheese-420x272.jpg 420w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-2_cheese-840x545.jpg 840w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-2_cheese-315x204.jpg 315w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-67041\" class=\"wp-caption-text\"><strong>Figure 2<\/strong>. Aerobic mesophile concentrations on unprocessed and high-pressure processed Queso Fresco throughout refrigerated storage.<\/figcaption><\/figure>\n<h2>Potential New Applications: When Tradition Meets Innovation<\/h2>\n<p>Beyond preservation, HPP can be used <strong>to treat milk before cheesemaking<\/strong> to modify protein interactions and improve curd formation and moisture retention, potentially <strong>increasing yield<\/strong> while maintaining desirable sensory traits.<\/p>\n<ul>\n<li><a href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S1466856410000809\">Voigt et\u202f (2010)<\/a> manufactured <strong>Cheddar<\/strong> from whole milk treated at 4000 or 6000 bar (58 to 87 kpsi) for 10 min and reported <strong>yield increases of 1.2%<\/strong> (4000 bar \/ 58 kpsi) and <strong>7.8%<\/strong> (6000 bar \/ 87 kpsi) alongside increased incorporation of \u03b2\u2011lactoglobulin into the curd, indicating that pressure\u2011induced whey protein\/casein interactions can contribute to higher moisture <strong>(Figure 3)<\/strong>.<\/li>\n<li>In <strong>fresh cheese<\/strong> production, <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S0958694600000649\">Molina et\u202fal (2000)<\/a> found that using milk treated with both heat pasteurization (65 \u00b0C \/ 149 \u00b0F for 30 min) and HPP (4000 bar \/ 85 kpsi for 15 min) increased cheese yield by 20% over heat pasteurization alone, with better coagulation and texture also noted.<\/li>\n<\/ul>\n<figure id=\"attachment_67044\" aria-describedby=\"caption-attachment-67044\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" loading=\"lazy\" class=\"wp-image-67044\" src=\"https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-3_cheese-300x195.jpg\" alt=\"Figure 3. Yield and moisture increase in Cheddar cheese manufactured from high-pressure processed milk compared to unprocessed milk.\" width=\"600\" height=\"389\" srcset=\"https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-3_cheese-300x195.jpg 300w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-3_cheese-1024x664.jpg 1024w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-3_cheese-768x498.jpg 768w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-3_cheese-1536x996.jpg 1536w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-3_cheese-2048x1329.jpg 2048w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-3_cheese-1260x817.jpg 1260w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-3_cheese-630x409.jpg 630w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-3_cheese-420x272.jpg 420w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-3_cheese-840x545.jpg 840w, https:\/\/www.hiperbaric.com\/wp-content\/uploads\/2026\/02\/Figure-3_cheese-315x204.jpg 315w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-67044\" class=\"wp-caption-text\"><strong>Figure 3<\/strong>. Yield and moisture increase in Cheddar cheese manufactured from high-pressure processed milk compared to unprocessed milk.<\/figcaption><\/figure>\n<p>Moreover, as highlighted by <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0958694619301955\">Nu\u00f1ez et al. (2020)<\/a> in a comprehensive review, HPP can be used as a <strong>ripening <\/strong><strong>modulator<\/strong>:<\/p>\n<ul>\n<li>Mild pressures (2000-4000\u202fbar \/ 28-58 kpsi), especially when applied early on fresh and young cheeses, <strong>tend to promote faster ripening<\/strong> biochemistry by enzyme release and restructuring proteins.<\/li>\n<li>More intense pressure levels (&gt;5000 bar \/ &gt;72.5 kpsi), particularly when applied later,<strong> tend to slow over<\/strong><strong>\u2011<\/strong><strong>ripening<\/strong> by suppressing microorganisms and inactivating key enzymes.<\/li>\n<\/ul>\n<p>These findings suggest that HPP can serve not only as a post\u2011packaging safety and shelf\u2011life tool, but also as a process lever to <strong>improve efficiency<\/strong>, support <strong>product innovation<\/strong>, and develop <strong>new texture and<\/strong> <strong>flavor<\/strong> profiles, although the effects can vary with cheese type, enzymes involved, and microorganisms present.<\/p>\n<h2>Conclusions<\/h2>\n<p>Across cheese styles, HPP demonstrates strong potential to <strong>enhance food safety<\/strong> by inactivating pathogens. It also supports <strong>shelf<\/strong><strong>\u2011<\/strong><strong>life extension<\/strong> by controlling spoilage microorganisms and mitigating defects like late blowing when applied appropriately.\u00a0 Finally, when applied to milk prior to cheesemaking, HPP can drive <strong>yield improvements<\/strong> through protein interactions and moisture retention. This opens innovation opportunities without relying on high\u2011temperature treatments, which aligns with the demand for improved <strong>sensory <\/strong>and<strong> nutritional quality<\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Cheese is a nutrient\u2011dense food that concentrates high\u2011quality proteins, calcium and phosphorus, and fat\u2011soluble vitamins such as vitamin D, while offering a remarkable range of textures and flavors shaped by milk composition, starter cultures, and ripening. Its value goes beyond nutrition: cheese is strongly tied to tradition, regional identity, and economic relevance, with many protected&#8230;<\/p>\n","protected":false},"author":17,"featured_media":67067,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"inline_featured_image":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":"","_wp_rev_ctl_limit":""},"categories":[266,253,302],"tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>High\u2011Pressure Processing (HPP) for Cheese: Food Safety, Shelf Life, and Room for Innovation - Hiperbaric<\/title>\n<meta name=\"description\" content=\"Across cheese styles, HPP demonstrates strong potential to enhance food safety by inactivating pathogens. 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