{"id":4149,"date":"2026-05-04T06:31:49","date_gmt":"2026-05-04T06:31:49","guid":{"rendered":"http:\/\/www.ygpack.cn\/?p=4149"},"modified":"2026-08-13T03:01:00","modified_gmt":"2026-08-13T03:01:00","slug":"q8-how-does-vacuum-level-affect-food-freshness-and-shelf-life","status":"publish","type":"post","link":"https:\/\/www.ygpack.cn\/en\/q8-how-does-vacuum-level-affect-food-freshness-and-shelf-life\/","title":{"rendered":"How Does Vacuum Pressure Affect Food Freshness and Shelf Life?"},"content":{"rendered":"<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"987\" height=\"558\" src=\"http:\/\/www.ygpack.cn\/wp-content\/uploads\/2026\/05\/image-18.png\" alt=\"\" class=\"wp-image-5197\" style=\"aspect-ratio:1.768838733163451;width:715px;height:auto\" srcset=\"https:\/\/www.ygpack.cn\/wp-content\/uploads\/2026\/05\/image-18.png 987w, https:\/\/www.ygpack.cn\/wp-content\/uploads\/2026\/05\/image-18-300x170.png 300w, https:\/\/www.ygpack.cn\/wp-content\/uploads\/2026\/05\/image-18-768x434.png 768w, https:\/\/www.ygpack.cn\/wp-content\/uploads\/2026\/05\/image-18-18x10.png 18w, https:\/\/www.ygpack.cn\/wp-content\/uploads\/2026\/05\/image-18-600x339.png 600w, https:\/\/www.ygpack.cn\/wp-content\/uploads\/2026\/05\/image-18-150x85.png 150w\" sizes=\"auto, (max-width: 987px) 100vw, 987px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Vacuum level is the single most important factor in determining how long packaged products will stay fresh. Vacuum level is measured in kilopascals (kPa) of negative pressure; the lower the value, the more air (oxygen) has been removed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Why Is Oxygen the Enemy of Freshness? Aerobic bacteria and mold need oxygen to multiply. Oxidation reactions break down fats, vitamins, and pigments. Even a small amount of residual oxygen can significantly accelerate food spoilage.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Reference Data on Vacuum Level and Shelf Life:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1002\" height=\"339\" src=\"http:\/\/www.ygpack.cn\/wp-content\/uploads\/2026\/05\/image-19.png\" alt=\"\" class=\"wp-image-5198\" style=\"aspect-ratio:2.9558423599907813;width:736px;height:auto\" srcset=\"https:\/\/www.ygpack.cn\/wp-content\/uploads\/2026\/05\/image-19.png 1002w, https:\/\/www.ygpack.cn\/wp-content\/uploads\/2026\/05\/image-19-300x101.png 300w, https:\/\/www.ygpack.cn\/wp-content\/uploads\/2026\/05\/image-19-768x260.png 768w, https:\/\/www.ygpack.cn\/wp-content\/uploads\/2026\/05\/image-19-18x6.png 18w, https:\/\/www.ygpack.cn\/wp-content\/uploads\/2026\/05\/image-19-600x203.png 600w, https:\/\/www.ygpack.cn\/wp-content\/uploads\/2026\/05\/image-19-150x51.png 150w\" sizes=\"auto, (max-width: 1002px) 100vw, 1002px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Vacuum Level Pitfalls: Many budget-friendly units are rated at \u201c\u201380 kPa,\u201d but after hundreds of cycles, they can no longer maintain this vacuum level due to wear on the vacuum pump or air leaks in the seals. Be sure to request the vacuum pump specification sheet to verify the ultimate vacuum (the maximum vacuum achievable when the equipment is unloaded); if the equipment claims an operating vacuum of \u201390 kPa, its ultimate vacuum should be at least \u201398 kPa.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">YGPACK Vacuum Pump Specifications: All YGPACK chamber-type vacuum machines are equipped with oil-sealed rotary vane vacuum pumps, capable of achieving a ultimate vacuum of \u201399.9 kPa and maintaining a stable operating vacuum of \u2265\u201395 kPa throughout the pump\u2019s rated service life.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">How does an oil-sealed rotary vane vacuum pump work?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">How can you tell if a gasket is leaking?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">What is the difference between ultimate vacuum and working vacuum?<\/p>","protected":false},"excerpt":{"rendered":"<p>Vacuum level is the single most important factor in determining the shelf life of packaged products.<\/p>","protected":false},"author":1,"featured_media":5197,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[31],"tags":[],"class_list":["post-4149","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-faq"],"_links":{"self":[{"href":"https:\/\/www.ygpack.cn\/en\/wp-json\/wp\/v2\/posts\/4149","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ygpack.cn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ygpack.cn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ygpack.cn\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ygpack.cn\/en\/wp-json\/wp\/v2\/comments?post=4149"}],"version-history":[{"count":3,"href":"https:\/\/www.ygpack.cn\/en\/wp-json\/wp\/v2\/posts\/4149\/revisions"}],"predecessor-version":[{"id":5199,"href":"https:\/\/www.ygpack.cn\/en\/wp-json\/wp\/v2\/posts\/4149\/revisions\/5199"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ygpack.cn\/en\/wp-json\/wp\/v2\/media\/5197"}],"wp:attachment":[{"href":"https:\/\/www.ygpack.cn\/en\/wp-json\/wp\/v2\/media?parent=4149"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ygpack.cn\/en\/wp-json\/wp\/v2\/categories?post=4149"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ygpack.cn\/en\/wp-json\/wp\/v2\/tags?post=4149"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}