{"id":3833,"date":"2023-01-09T10:30:16","date_gmt":"2023-01-09T10:30:16","guid":{"rendered":"https:\/\/8thclass.deltapublications.in\/?page_id=3833"},"modified":"2025-08-21T11:56:55","modified_gmt":"2025-08-21T11:56:55","slug":"s-2-e-food-preservation","status":"publish","type":"page","link":"https:\/\/8thclass.deltapublications.in\/index.php\/s-2-e-food-preservation\/","title":{"rendered":"s-2.e Food Preservation"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color\" style=\"color:#00056d;text-transform:uppercase\"><strong>Food Preservation<\/strong><\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div style=\"position: relative; width: 100%; height: 0; padding-top: 56.2500%;\n padding-bottom: 0; box-shadow: 0 2px 8px 0 rgba(63,69,81,0.16); margin-top: 1.6em; margin-bottom: 0.9em; overflow: hidden;\n border-radius: 8px; will-change: transform;\">\n  <iframe loading=\"lazy\" style=\"position: absolute; width: 100%; height: 100%; top: 0; left: 0; border: none; padding: 0;margin: 0;\"\n    src=\"https:\/\/www.canva.com\/design\/DAF3tAUmpSM\/8iZpsfYDpuoPGFT3cnfu3g\/watch?embed\" allowfullscreen=\"allowfullscreen\" allow=\"fullscreen\">\n  <\/iframe>\n<\/div>\n<a href=\"https:&#x2F;&#x2F;www.canva.com&#x2F;design&#x2F;DAF3tAUmpSM&#x2F;8iZpsfYDpuoPGFT3cnfu3g&#x2F;watch?utm_content=DAF3tAUmpSM&amp;utm_campaign=designshare&amp;utm_medium=embeds&amp;utm_source=link\" target=\"_blank\" rel=\"noopener\">preservatives<\/a> by Delta publications\n<\/div>\n<\/div>\n\n\n\n<p class=\"has-text-color has-link-color has-huge-font-size wp-elements-869a5c0b6b78055316c8d0186252dcbd\" style=\"color:#74008b\"><strong>key notes :<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-ce2728420de7f07f456c8143568ad832\" style=\"color:#000060\">\u2705 <strong>What is Food Preservation?<\/strong><\/h3>\n\n\n\n<p class=\"has-large-font-size\">Food preservation is the process of <strong>treating and handling food<\/strong> to <strong>prevent spoilage, decay, or contamination<\/strong>, and to <strong>extend its shelf life<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"579\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/Food-Preservation_-1024x579.jpg\" alt=\"\" class=\"wp-image-20896\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/Food-Preservation_-1024x579.jpg 1024w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/Food-Preservation_-300x170.jpg 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/Food-Preservation_-768x434.jpg 768w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/Food-Preservation_.jpg 1472w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-ddfc71331400595451a7ddbae7c565c7\" style=\"color:#000060\">\ud83e\uddeb <strong>Why Do We Preserve Food?<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>To <strong>prevent the growth of microorganisms<\/strong> (like bacteria and fungi).<\/li>\n\n\n\n<li>To <strong>avoid wastage<\/strong> of food.<\/li>\n\n\n\n<li>To <strong>store food for longer periods<\/strong>.<\/li>\n\n\n\n<li>To <strong>ensure food is available<\/strong> during off-seasons.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-662c884127c36893b04044e1802c5500\" style=\"color:#000060\">\ud83e\uddc3 <strong>Common Methods of Food Preservation<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-table has-large-font-size\"><table class=\"has-fixed-layout\"><thead><tr><th>Method<\/th><th>Description<\/th><th>Examples<\/th><\/tr><\/thead><tbody><tr><td><strong>Drying<\/strong><\/td><td>Removes moisture to stop bacteria growth<\/td><td>Dried fruits, grains<\/td><\/tr><tr><td><strong>Refrigeration<\/strong><\/td><td>Slows down the activity of bacteria<\/td><td>Milk, vegetables<\/td><\/tr><tr><td><strong>Freezing<\/strong><\/td><td>Stops microbial growth completely<\/td><td>Ice cream, frozen peas<\/td><\/tr><tr><td><strong>Canning<\/strong><\/td><td>Sealing food in airtight containers after heating<\/td><td>Jam, beans<\/td><\/tr><tr><td><strong>Salting<\/strong><\/td><td>Removes water and kills microbes<\/td><td>Pickles, fish<\/td><\/tr><tr><td><strong>Sugaring<\/strong><\/td><td>High sugar content prevents microbial growth<\/td><td>Jams, jellies<\/td><\/tr><tr><td><strong>Pasteurization<\/strong><\/td><td>Heating food to kill harmful microbes<\/td><td>Milk, juices<\/td><\/tr><tr><td><strong>Vacuum Packing<\/strong><\/td><td>Removes air to slow spoilage<\/td><td>Chips, processed meat<\/td><\/tr><tr><td><strong>Chemical Preservation<\/strong><\/td><td>Using preservatives to stop microbial growth<\/td><td>Soft drinks, ketchup<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-1fd35306b1232c8645def20552b1814e\" style=\"color:#000060\">\ud83e\udda0 <strong>Common Preservatives Used<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"579\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/fish-pickles-1024x579.png\" alt=\"\" class=\"wp-image-20897\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/fish-pickles-1024x579.png 1024w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/fish-pickles-300x170.png 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/fish-pickles-768x434.png 768w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/fish-pickles.png 1472w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Salt<\/strong> \u2013 for fish, pickles<\/li>\n\n\n\n<li><strong>Sugar<\/strong> \u2013 for fruits, sweets<\/li>\n\n\n\n<li><strong>Vinegar (Acetic acid)<\/strong> \u2013 for pickles, sauces<\/li>\n\n\n\n<li><strong>Sodium benzoate<\/strong> \u2013 for juices, soft drinks<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-bfa0f32e71f11d7f078e1014504eb0e7\" style=\"color:#000060\">\ud83e\uddea <strong>Natural vs Artificial Preservatives<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Natural:<\/strong> Salt, sugar, vinegar, lemon juice<\/li>\n\n\n\n<li><strong>Artificial:<\/strong> Sodium benzoate, potassium metabisulfite<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-fd40def5e7d3567472204ff796d65c0d\" style=\"color:#000060\">\u26a0\ufe0f <strong>Precautions in Food Preservation<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Use clean containers and hands.<\/li>\n\n\n\n<li>Store preserved food in cool, dry places.<\/li>\n\n\n\n<li>Check expiry dates if preservatives are used.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-34439048187a4d8b3a8e5c7162dfa285\" style=\"color:#000060\">\ud83e\udde0 <strong>Quick Facts<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Louis Pasteur<\/strong> developed <strong>pasteurization<\/strong>.<\/li>\n\n\n\n<li>Preservation helps in <strong>food security<\/strong>.<\/li>\n\n\n\n<li>Overuse of artificial preservatives can be <strong>harmful<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-large-font-size\" style=\"color:#d90000\"><strong>Let&#8217;s practice!<\/strong><\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/75880\/474\/154\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-50.png\" alt=\"\" class=\"wp-image-7580\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-50.png 500w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-50-300x300.png 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-50-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/75914\/499\/857\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-49.png\" alt=\"\" class=\"wp-image-7581\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-49.png 500w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-49-300x300.png 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-49-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Food Preservation preservatives by Delta publications key notes : \u2705 What is Food Preservation? Food preservation is the process of treating and handling food to prevent spoilage, decay, or contamination, and to extend its shelf life. \ud83e\uddeb Why Do We Preserve Food? \ud83e\uddc3 Common Methods of Food Preservation Method Description Examples Drying Removes moisture to<a class=\"more-link\" href=\"https:\/\/8thclass.deltapublications.in\/index.php\/s-2-e-food-preservation\/\">Continue reading <span class=\"screen-reader-text\">&#8220;s-2.e Food Preservation&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-3833","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_hostinger_reach_plugin_has_subscription_block":false,"_hostinger_reach_plugin_is_elementor":false,"_links":{"self":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3833","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/comments?post=3833"}],"version-history":[{"count":26,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3833\/revisions"}],"predecessor-version":[{"id":21301,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3833\/revisions\/21301"}],"wp:attachment":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=3833"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}