{"id":607,"date":"2021-06-25T08:00:00","date_gmt":"2021-06-24T23:00:00","guid":{"rendered":"https:\/\/www.ringodaigaku.com\/ringo_blog\/english\/?p=607"},"modified":"2021-06-25T08:36:44","modified_gmt":"2021-06-24T23:36:44","slug":"how-to-prevent-discoloration-of-apples","status":"publish","type":"post","link":"https:\/\/www.ringodaigaku.com\/ringo_blog\/english\/2021\/06\/25\/607.html","title":{"rendered":"How to prevent discoloration of apples"},"content":{"rendered":"\n<p>Apples from Aomori prefecture are popular for large-sized apples, so they are often cut and eaten rather than bitten.<\/p>\n\n\n\n<p>When you cut an apple, the surface gradually oxidizes and turns brown.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"375\" src=\"https:\/\/www.ringodaigaku.com\/ringo_blog\/english\/wp-content\/uploads\/sites\/2\/2021\/06\/IMG_8934s.jpg\" alt=\"\" class=\"wp-image-612\" \/><\/figure><\/div>\n\n\n\n<p>There is no harm in eating something that has turned brown, but I think there are many people who look a little bad\u2026<\/p>\n\n\n\n<p>Why does the color change when you cut an apple in the first place?<\/p>\n\n\n\n<p>It&#8217;s due to polyphenols.<\/p>\n\n\n\n<p>Apples are high in polyphenols and also contain &#8220;oxidases&#8221; that promote the oxidation of polyphenols.<\/p>\n\n\n\n<p>When this polyphenol comes into contact with air, it turns brown due to the action of oxidase.(Polyphenol itself is a component that is said to be good for health, and is known to have the effects of preventing lifestyle-related diseases, cancer, suppressing allergic symptoms such as pollinosis and atopic dermatitis, and whitening the skin.)<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"350\" height=\"263\" src=\"https:\/\/www.ringodaigaku.com\/ringo_blog\/english\/wp-content\/uploads\/sites\/2\/2021\/06\/IMG_1064s.jpg\" alt=\"\" class=\"wp-image-613\" \/><\/figure><\/div>\n\n\n\n<p>Many people have long known that &#8220;soaking in salt water&#8221; is a way to prevent such discoloration. This salt water suppresses the action of oxidase, so discoloration is suppressed.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"230\" src=\"https:\/\/www.ringodaigaku.com\/ringo_blog\/english\/wp-content\/uploads\/sites\/2\/2021\/06\/hen01_en.png\" alt=\"\" class=\"wp-image-614\" \/><\/figure><\/div>\n\n\n\n<p>Please see the above picture.The discoloration of apples soaked in salt water is much less than that of freshly cut apples.<\/p>\n\n\n\n<p>Besides, lemon water and sugar water are effective as well as salt water.<\/p>\n\n\n\n<p>Discoloration is suppressed and it is perfect for putting in a lunch box.<\/p>\n\n\n\n<p>If you cut it off and soak it in salt water, the color will not change easily.<\/p>\n\n\n\n<p><\/p>\n<div class=\"milje69f758c555e28\" ><img class=\"mt-image-none aligncenter\" src=\"\/images\/blog\/ringo_line.gif\" alt=\"APPLE LINE\" width=\"360\" height=\"28\" \/>\n\n \n\n<a href=\"\/english\/\" target=\"_blank\" rel=\"noopener noreferrer\"><img class=\"mt-image-left alignleft\" src=\"\/images\/blog\/au_english.gif\" alt=\"APPLE UNIVERSITY\" width=\"234\" height=\"60\" align=\"left\" \/><\/a>Apple University is a virtual university where you can learn many things about apples in a fun way.\n\u21d2\u3000<a href=\"\/english\/\" target=\"_blank\" rel=\"noopener noreferrer\">Click here to go to the site.<\/a>\n<br><br><\/div><style type=\"text\/css\">\r\n@media screen and (min-width: 1201px) {\r\n.milje69f758c555e28 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.milje69f758c555e28 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.milje69f758c555e28 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.milje69f758c555e28 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.milje69f758c555e28 {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n","protected":false},"excerpt":{"rendered":"<p>Apples from Aomori prefecture are popular for large-sized apples, so they are often cut and eaten rather than bitten. When you cut an apple, the surface gradually oxidizes and turns brown. There is no harm in eating something that has turned brown, but I think there are many people who look a little bad\u2026 Why does the color change when you cut an apple in the first place? It&#8217;s due to polyphenols. Apples are high in polyphenols and also contain &#8220;oxidases&#8221; that promote the oxidation of polyphenols. When this polyphenol comes into contact with air, it turns brown due to the action of oxidase.(Polyphenol itself is a component that is\u2026 <span class=\"read-more\"><a href=\"https:\/\/www.ringodaigaku.com\/ringo_blog\/english\/2021\/06\/25\/607.html\">Read More &raquo;<\/a><\/span><\/p>\n","protected":false},"author":4,"featured_media":612,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-607","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-1"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to prevent discoloration of apples - Ringo Daigaku<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ringodaigaku.com\/ringo_blog\/english\/2021\/06\/25\/607.html\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to prevent discoloration of apples - Ringo Daigaku\" \/>\n<meta property=\"og:description\" content=\"Apples from Aomori prefecture are popular for large-sized apples, so they are often cut and eaten rather than bitten. When you cut an apple, the surface gradually oxidizes and turns brown. There is no harm in eating something that has turned brown, but I think there are many people who look a little bad\u2026 Why does the color change when you cut an apple in the first place? It&#8217;s due to polyphenols. Apples are high in polyphenols and also contain &#8220;oxidases&#8221; that promote the oxidation of polyphenols. When this polyphenol comes into contact with air, it turns brown due to the action of oxidase.(Polyphenol itself is a component that is\u2026 Read More &raquo;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ringodaigaku.com\/ringo_blog\/english\/2021\/06\/25\/607.html\" \/>\n<meta property=\"og:site_name\" content=\"Ringo Daigaku\" \/>\n<meta property=\"article:published_time\" content=\"2021-06-24T23:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-06-24T23:36:44+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ringodaigaku.com\/ringo_blog\/english\/wp-content\/uploads\/sites\/2\/2021\/06\/IMG_8934s.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"500\" \/>\n\t<meta property=\"og:image:height\" content=\"375\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"\u308a\u3093\u3054\u5927\u5b66\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u308a\u3093\u3054\u5927\u5b66\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.ringodaigaku.com\\\/ringo_blog\\\/english\\\/2021\\\/06\\\/25\\\/607.html#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.ringodaigaku.com\\\/ringo_blog\\\/english\\\/2021\\\/06\\\/25\\\/607.html\"},\"author\":{\"name\":\"\u308a\u3093\u3054\u5927\u5b66\",\"@id\":\"https:\\\/\\\/www.ringodaigaku.com\\\/ringo_blog\\\/english\\\/#\\\/schema\\\/person\\\/0dc6204a50c5a5db241ee0b8c4c7affc\"},\"headline\":\"How to prevent discoloration of apples\",\"datePublished\":\"2021-06-24T23:00:00+00:00\",\"dateModified\":\"2021-06-24T23:36:44+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.ringodaigaku.com\\\/ringo_blog\\\/english\\\/2021\\\/06\\\/25\\\/607.html\"},\"wordCount\":242,\"image\":{\"@id\":\"https:\\\/\\\/www.ringodaigaku.com\\\/ringo_blog\\\/english\\\/2021\\\/06\\\/25\\\/607.html#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.ringodaigaku.com\\\/ringo_blog\\\/english\\\/wp-content\\\/uploads\\\/sites\\\/2\\\/2021\\\/06\\\/IMG_8934s.jpg\",\"articleSection\":[\"\u672a\u5206\u985e\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.ringodaigaku.com\\\/ringo_blog\\\/english\\\/2021\\\/06\\\/25\\\/607.html\",\"url\":\"https:\\\/\\\/www.ringodaigaku.com\\\/ringo_blog\\\/english\\\/2021\\\/06\\\/25\\\/607.html\",\"name\":\"How to prevent discoloration of apples - 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