{"id":9448,"date":"2024-08-24T14:07:05","date_gmt":"2024-08-24T14:07:05","guid":{"rendered":"https:\/\/longchangextracts.com\/?p=9448"},"modified":"2024-08-24T14:07:05","modified_gmt":"2024-08-24T14:07:05","slug":"food-bleach","status":"publish","type":"post","link":"https:\/\/longchangextracts.com\/hu\/elelmiszer-feherito\/","title":{"rendered":"Mi az az \u00e9lelmiszerfeh\u00e9r\u00edt\u0151?"},"content":{"rendered":"<p><strong>Mi az \u00e9lelmiszer feh\u00e9r\u00edt\u0151<\/strong><\/p>\n<p>A GB2760 Nemzeti \u00c9lelmiszerbiztons\u00e1gi Szabv\u00e1ny az \u00e9lelmiszer-adal\u00e9kanyagok haszn\u00e1lat\u00e1ra vonatkoz\u00f3 szabv\u00e1ny szerint a feh\u00e9r\u00edt\u0151 olyan anyagokra utal, amelyek k\u00e9pesek elpuszt\u00edtani vagy g\u00e1tolni az \u00e9lelmiszer sz\u00ednez\u0151 t\u00e9nyez\u0151it, elhalv\u00e1ny\u00edtani vagy meg\u00f3vni azt a barnul\u00e1st\u00f3l.<\/p>\n<p><strong>Mi\u00e9rt kell \u00e9lelmiszerfeh\u00e9r\u00edt\u0151vel kezelni az \u00e9lelmiszereket?<\/strong><\/p>\n<p>Mivel n\u00e9h\u00e1ny \u00e9lelmiszer megjelenik elsz\u00ednez\u0151d\u00e9s jelens\u00e9g feldolgoz\u00e1s ut\u00e1n, a sz\u00edn nem ide\u00e1lis, a feh\u00e9r\u00edt\u0151vel kezelt \u00e9lelmiszer, feh\u00e9r sz\u00edn, jobb megjelen\u00e9s, n\u00e9pszer\u0171bb a fogyaszt\u00f3k k\u00f6r\u00e9ben, \u00edgy a gy\u00e1rt\u00f3k megtal\u00e1lj\u00e1k a feh\u00e9r\u00edt\u0151 \u00e9lelmiszer feh\u00e9r\u00edt\u00e9s m\u00f3djait.<\/p>\n<p><strong>Az \u00e9telek elsz\u00ednez\u0151d\u00e9s\u00e9nek 3 f\u0151 oka van:<\/strong><br \/>\n<strong>2.1 Enzimatikus barnul\u00e1s k\u00f6vetkezik be<\/strong><br \/>\nGy\u00fcm\u00f6lcs\u00f6k, z\u00f6lds\u00e9gek, burgonya jelenl\u00e9t\u00e9ben egy oszt\u00e1lynyi <strong>fenol-oxid\u00e1z<\/strong> \u00e9s <strong>polifenol anyagok<\/strong>, a kett\u0151 tal\u00e1lkozik, hogy sz\u00ednes anyagokat hozzon l\u00e9tre, plusz az oxig\u00e9n enzimatikus barnul\u00e1s k\u00f6vetkezik be, a sz\u00edn oxid\u00e1ci\u00f3j\u00e1val a v\u00f6r\u00f6sb\u0151l barn\u00e1v\u00e1, majd feket\u00e9v\u00e9 v\u00e1lik.<\/p>\n<p>\u00c1ltal\u00e1ban ez a fenol-oxid\u00e1z \u00e9s polifenol anyagok a sejtben szorosan elv\u00e1lasztva, de az \u00f6sszetev\u0151k egy bump vagy v\u00e1g\u00e1s, sejtk\u00e1rosod\u00e1s, elv\u00e1lasztva a \"fal\" \u00f6sszeomlik, az \u00f6sszes anyag \u00f6sszekeveredik, a k\u00e9tf\u00e9le anyag tal\u00e1lkozik \u00e9s reag\u00e1l a leveg\u0151ben l\u00e9v\u0151 oxig\u00e9nnel, ami barna anyagokat eredm\u00e9nyez. P\u00e9ld\u00e1ul a leveg\u0151n hagyott v\u00e1gott burgonya egy ideig a v\u00e1gott fel\u00fcleten s\u00f6t\u00e9tedni fog.<\/p>\n<p><strong>2.2 Nem enzimatikus barnul\u00e1s<\/strong><br \/>\nA nem enzimatikus barnul\u00e1s a k\u00f6vetkez\u0151 reakci\u00f3t jelenti <strong>karbonil anyagok<\/strong> \u00e9s <strong>nitrog\u00e9ntartalm\u00fa anyagok<\/strong>, amely s\u00f6t\u00e9tbarna anyagokat termel. Egyes kev\u00e9s nedvess\u00e9get tartalmaz\u00f3 \u00e9lelmiszerek, p\u00e9ld\u00e1ul a sz\u00e1r\u00edtott z\u00f6lds\u00e9gek, ann\u00e1l s\u00f6t\u00e9tebbek lesznek, min\u00e9l tov\u00e1bb t\u00e1rolj\u00e1k \u0151ket, \u00e9s a tejpor \u00e9s a sz\u00f3jababpor is vil\u00e1gosbarn\u00e1nak t\u0171nik, ami mind a nem-enzimatikus barnul\u00e1ssal f\u00fcgg \u00f6ssze.<\/p>\n<p><strong>2.3 Sz\u00ednezett anyagok az \u00e9lelmiszerekben<\/strong><br \/>\nEgyes \u00e9lelmiszerek tartalmaznak <strong>term\u00e9szetes pigmentek<\/strong> \u00e9s <strong>sz\u00ednes anyagok<\/strong>, mint p\u00e9ld\u00e1ul a liszt az eredeti karotin \u00e9s flavonoidok, \u00edgy a liszt vil\u00e1gos s\u00e1rga sz\u00ednt mutat.<\/p>\n<p><strong>K\u00f6z\u00f6ns\u00e9ges feh\u00e9r\u00edt\u0151szer \u00e9s haszn\u00e1lata<\/strong><\/p>\n<p>A GB2760 szerint a K\u00edn\u00e1ban \u00e9lelmiszerekben val\u00f3 felhaszn\u00e1l\u00e1sra enged\u00e9lyezett feh\u00e9r\u00edt\u0151szerek k\u00f6z\u00e9 tartozik a k\u00e9n-dioxid, a k\u00e1lium-metabiszulfit, a n\u00e1trium-metabiszulfit, a n\u00e1trium-szulfit, a n\u00e1trium-biszulfit, a n\u00e1trium-hiposzulfit \u00e9s a k\u00e9n. Ez egy reduk\u00e1l\u00f3 feh\u00e9r\u00edt\u0151szer, amely f\u0151leg k\u00e9n-dioxidot szabad\u00edt fel a felhaszn\u00e1l\u00e1s sor\u00e1n, \u00e9s a k\u00e9n-dioxidot a nem-enzimatikus barnul\u00e1s \u00e9s az enzimatikus barnul\u00e1s g\u00e1tl\u00e1s\u00e1ra haszn\u00e1lja.<\/p>\n<p><strong>1. K\u00e9nes g\u00e1zos\u00edt\u00e1s<\/strong><br \/>\nA k\u00e9nes f\u00fcst\u00f6l\u00e9s egy olyan m\u00f3dszer, amelynek sor\u00e1n z\u00e1rt t\u00e9rben k\u00e9nt \u00e9getnek el, hogy k\u00e9n-dioxid f\u00fcst\u00f6l\u00e9st \u00e1ll\u00edtsanak el\u0151, ez egy \"\u0151si elj\u00e1r\u00e1s\", enged\u00e9lyezett, mint az \u00e9lelmiszer feh\u00e9r\u00edt\u00e9s\u00e9re haszn\u00e1lt \u00e9lelmiszer feh\u00e9r\u00edt\u0151szer, nem pedig az, amit hallottunk \"fekete sz\u00edv\u0171 gyakorlat\".<\/p>\n<p>A k\u00e9nes f\u00fcst\u00f6l\u00e9s elve az, hogy a k\u00e9n-dioxid k\u00e9pes g\u00e1tolni az enzimatikus barnul\u00e1st, de g\u00e1tolja a Meladic-reakci\u00f3t is, hogy megakad\u00e1lyozza a barnul\u00e1st. Ugyanakkor a k\u00e9n-dioxid a gy\u00fcm\u00f6lcs\u00f6k\u00f6n \u00e9s z\u00f6lds\u00e9geken a C-vitaminban v\u00e9d\u0151 hat\u00e1s\u00fa, \u00edgy a t\u00e1pl\u00e1lkoz\u00e1s szempontj\u00e1b\u00f3l nem k\u00e1ros. De ez a m\u00f3dszer nem j\u00f3 a k\u00e9n-dioxid marad\u00e9k mennyis\u00e9g\u00e9nek ellen\u0151rz\u00e9s\u00e9re. Az elm\u00falt \u00e9vekben a vonatkoz\u00f3 nemzeti szabv\u00e1nyok miatt szigor\u00faan korl\u00e1tozz\u00e1k a k\u00e9n-dioxid marad\u00e9k mennyis\u00e9g\u00e9t, ez a hagyom\u00e1nyos elj\u00e1r\u00e1s nagym\u00e9rt\u00e9kben javult, vagy ak\u00e1r meg is sz\u0171nt.<\/p>\n<p>Teh\u00e1t a j\u00f6v\u0151ben hallani fogjuk, hogy a k\u00e9nnel f\u00fcst\u00f6lt gy\u00fcm\u00f6lcs\u00f6k nem hiszem, hogy nem biztons\u00e1gos, am\u00edg a k\u00e9n-dioxid-marad\u00e9k \u00f6sszhangban van a GB 2760-2014 k\u00f6vetelm\u00e9nyeivel.<\/p>\n<p><strong>2. K\u00e9n-dioxid k\u00f6zvetlen hozz\u00e1ad\u00e1sa<\/strong><br \/>\nA k\u00e9n-dioxid az \u00e9lelmiszerekben nagyon sz\u00e9les k\u00f6r\u0171 felhaszn\u00e1l\u00e1s, a friss gy\u00fcm\u00f6lcs\u00f6k, sz\u00e1r\u00edtott gy\u00fcm\u00f6lcs\u00f6k, kand\u00edrozott gy\u00fcm\u00f6lcs\u00f6k, sz\u00e1r\u00edtott z\u00f6lds\u00e9gek, sz\u00e1r\u00edtott gomb\u00e1k vagy gombakonzervek, di\u00f3f\u00e9l\u00e9k, kaka\u00f3term\u00e9kek, s\u00fctem\u00e9nyek, bambusz, cukor, gy\u00fcm\u00f6lcs- \u00e9s z\u00f6lds\u00e9glevek, bor stb. fel\u00fcletkezel\u00e9se k\u00e9n-dioxidot adhat hozz\u00e1.<\/p>\n<p><strong>3. A szulfitok feh\u00e9r\u00edt\u0151 hat\u00e1sa<\/strong><br \/>\nK\u00edna \u00e9lelmiszer-el\u0151\u00e1ll\u00edt\u00e1si folyamata, az \u00e9lelmiszer feh\u00e9r\u00edt\u0151szer t\u00e9nyleges haszn\u00e1lata els\u0151sorban szulfit \u00e9s s\u00f3i, mint p\u00e9ld\u00e1ul a v\u00edzmentes n\u00e1trium-szulfit, n\u00e1trium-szulfit, n\u00e1trium-hiposzulfit \u00e9s n\u00e1trium-metabiszulfit. A n\u00e1trium-hiposzulfit legkor\u00e1bbi szabv\u00e1ny\u00e1t n\u00e1trium-hipodiszulfitnak (k\u00f6zismert nev\u00e9n biztos\u00edt\u00e1si pornak) nevezt\u00e9k. Ezenk\u00edv\u00fcl az egyetlen \u00f6sszetev\u0151 nem kiel\u00e9g\u00edt\u0151 feh\u00e9r\u00edt\u0151 hat\u00e1sa miatt jelenleg nagyon sok \u00f6sszetett \u00e9lelmiszerfeh\u00e9r\u00edt\u0151 van forgalomban, amelyek k\u00f6z\u00fcl a n\u00e1trium-hiposzulfit + n\u00e1trium-metabiszulfit kombin\u00e1ci\u00f3ja a legelterjedtebb.<\/p>","protected":false},"excerpt":{"rendered":"<p>What is food bleach According to GB2760 National Standard for Food Safety Standard for the Use of Food Additives, bleach refers to substances that can destroy or inhibit the coloring factors of food, make it fade or save it from browning. Why do we need to use food bleach to treat food? Because some food [&hellip;]<\/p>","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[46],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is food bleach? - China Chemical Manufacturer<\/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:\/\/longchangextracts.com\/hu\/elelmiszer-feherito\/\" \/>\n<meta property=\"og:locale\" content=\"hu_HU\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is food bleach? - China Chemical Manufacturer\" \/>\n<meta property=\"og:description\" content=\"What is food bleach According to GB2760 National Standard for Food Safety Standard for the Use of Food Additives, bleach refers to substances that can destroy or inhibit the coloring factors of food, make it fade or save it from browning. 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