{"id":9267,"date":"2024-08-23T08:08:14","date_gmt":"2024-08-23T08:08:14","guid":{"rendered":"https:\/\/longchangextracts.com\/?p=9267"},"modified":"2024-08-23T08:08:14","modified_gmt":"2024-08-23T08:08:14","slug":"chitosan-deacetylated-chitin","status":"publish","type":"post","link":"https:\/\/longchangextracts.com\/hu\/kitozan-deacetilezett-kitin\/","title":{"rendered":"Milyen felhaszn\u00e1l\u00e1si ter\u00fcletei vannak a kitoz\u00e1nnak (deacetil-kitin) az \u00e9lelmiszerekben?"},"content":{"rendered":"

A kitoz\u00e1n, m\u00e1s n\u00e9ven deacetilezett kitin a term\u00e9szetben a m\u00e1sodik leggyakoribb biopolimer a cellul\u00f3z ut\u00e1n, \u00e9s sz\u00e9les k\u00f6rben elterjedt, f\u0151k\u00e9nt sz\u00e1mos alacsonyabb rend\u0171 \u00e1llat, k\u00fcl\u00f6n\u00f6sen az \u00edzeltl\u00e1b\u00faak, p\u00e9ld\u00e1ul a garn\u00e9lar\u00e1kok, r\u00e1kok, rovarok stb. p\u00e1nc\u00e9lj\u00e1ban, valamint alacsonyabb rend\u0171 n\u00f6v\u00e9nyek, p\u00e9ld\u00e1ul bakt\u00e9riumok, alg\u00e1k \u00e9s gomb\u00e1k sejtfal\u00e1ban. Becsl\u00e9sek szerint az \u00e9ves bioszint\u00e9zis t\u00f6bb mint 1 milli\u00e1rd t, hatalmas meg\u00fajul\u00f3 er\u0151forr\u00e1s. A kitin term\u00e9ke az acetilcsoport elt\u00e1vol\u00edt\u00e1sa ut\u00e1n a kitoz\u00e1n.<\/p>\n

A kitoz\u00e1n g\u00e1tl\u00f3 mechanizmusa<\/strong><\/p>\n

A kitin, a kitoz\u00e1n \u00e9s sz\u00e1rmaz\u00e9kaik antibakteri\u00e1lis hat\u00e1s\u00faak sz\u00e1mos mikroorganizmusra, p\u00e9ld\u00e1ul bakt\u00e9riumokra, \u00e9leszt\u0151gomb\u00e1kra \u00e9s gomb\u00e1kra. A kitoz\u00e1n antimikrobi\u00e1lis hat\u00e1s\u00e1nak pontos mechanizmusa m\u00e9g nem teljesen ismert, de k\u00fcl\u00f6nb\u00f6z\u0151 elm\u00e9leteket javasoltak.<\/p>\n

A pozit\u00edv t\u00f6lt\u00e9s\u0171 kitoz\u00e1nmolekul\u00e1k \u00e9s a negat\u00edv t\u00f6lt\u00e9s\u0171 mikrobi\u00e1lis sejtmembr\u00e1nok k\u00f6lcs\u00f6nhat\u00e1sa a feh\u00e9rje-szer\u0171 komponensek kisziv\u00e1rg\u00e1s\u00e1t eredm\u00e9nyezi a sejtekb\u0151l. A kitoz\u00e1n kel\u00e1tk\u00e9pz\u0151 hat\u00e1s\u00fa<\/strong> \u00e9s szelekt\u00edven kel\u00e1tk\u00e9pez egyes f\u00e9melemeket, ez\u00e1ltal g\u00e1tolja a mikrob\u00e1k n\u00f6veked\u00e9s\u00e9t \u00e9s a toxintermel\u00e9st.<\/p>\n

A kitoz\u00e1n aktiv\u00e1lja a gazdasz\u00f6vetek egyes v\u00e9dekez\u0151 mechanizmusait is, v\u00edzmegk\u00f6t\u0151k\u00e9nt m\u0171k\u00f6dik, \u00e9s g\u00e1tolja egyes enzimek aktivit\u00e1s\u00e1t. A mikroorganizmusok sejtmagj\u00e1ba behatolva a kitoz\u00e1n a DNS-hez k\u00f6t\u0151dik, \u00edgy g\u00e1tolja az mRNS \u00e9s a feh\u00e9rjeszint\u00e9zist. a kitoz\u00e1n jobb oldhat\u00f3s\u00e1ggal \u00e9s bakteriosztatikus tulajdons\u00e1gokkal rendelkezik, mint a kitin<\/strong> a kitoz\u00e1n C2 poz\u00edci\u00f3j\u00e1ban l\u00e9v\u0151 gl\u00fckozamin-monomer pozit\u00edv t\u00f6lt\u00e9se miatt, ha a pH 6-n\u00e1l alacsonyabb. .<\/strong><\/p>\n

A kitoz\u00e1n bakteriosztatikus hat\u00e1sa<\/strong><\/p>\n

Jap\u00e1n jelent\u00e9sek szerint a kitoz\u00e1n g\u00e1tl\u00f3 hat\u00e1ssal van a Staphylococcus aureusra \u00e9s az Escherichia colira. Jelent\u00e9sek szerint a kitoz\u00e1n er\u0151s g\u00e1tl\u00f3 hat\u00e1ssal van \u00f6t gyakori \u00e9telm\u00e9rgez\u0151 bakt\u00e9riumra, nevezetesen a Staphylococcus aureusra, az Escherichia colira, a Yersinia colira, a Salmonella typhimuriumra \u00e9s a Listeria monocytogenesre. Jap\u00e1nban szabadalmaztatt\u00e1k a kitoz\u00e1nt mint \u00e9lelmiszer tart\u00f3s\u00edt\u00f3szert.<\/p>\n

A kitoz\u00e1n alkalmaz\u00e1sa az \u00e9lelmiszerek tart\u00f3s\u00edt\u00e1s\u00e1ban<\/strong><\/p>\n

1. Alkalmaz\u00e1s a h\u00fask\u00e9sz\u00edtm\u00e9nyek tart\u00f3s\u00edt\u00e1s\u00e1ban<\/strong><\/p>\n

A kutat\u00e1sok kimutatt\u00e1k, hogy a kitoz\u00e1n nyilv\u00e1nval\u00f3 frissess\u00e9gmeg\u0151rz\u0151 hat\u00e1ssal van a h\u0171t\u00f6tt sert\u00e9sh\u00fasra<\/strong>. A 1% kitoz\u00e1n oldat \u00e9s 2% ecetsav oldat kever\u00e9ke nem-v\u00e1kuum csomagol\u00e1s sert\u00e9sh\u00fas tart\u00f3s\u00edt\u00e1si kutat\u00e1s, tal\u00e1ltak 10 \u2103 kitoz\u00e1n ecetsav oldat kezel\u00e9s sert\u00e9sh\u00fas t\u00e1rol\u00e1sa ut\u00e1n 12d a k\u00f3bor bakt\u00e9riumok sz\u00e1ma csak 5,51 logaritmikus \u00e9rt\u00e9k (a kontroll csoport az \u00e9rt\u00e9k 9,36 logaritmikus \u00e9rt\u00e9k); 20 \u2103 kitoz\u00e1n kever\u00e9k m\u00e9g mindig meghosszabb\u00edthatja a t\u00e1rol\u00e1si id\u0151 2d.<\/p>\n

Egyes tanulm\u00e1nyok kimutatt\u00e1k, hogy min\u00e9l magasabb a kitoz\u00e1n deacetilez\u00e9s\u00e9nek m\u00e9rt\u00e9ke, ann\u00e1l jobb a kitoz\u00e1n tart\u00f3s\u00edt\u00f3 hat\u00e1sa, a szabad aminosav 0,62% kitoz\u00e1n oldat (1% koncentr\u00e1ci\u00f3ja, 2% ecetsavban oldva) ar\u00e1nya a h\u0171t\u00f6tt h\u00fas eltarthat\u00f3s\u00e1gi ideje ak\u00e1r 9d; min\u00e9l magasabb a kitoz\u00e1n koncentr\u00e1ci\u00f3ja, ann\u00e1l jobb a bakteriosztatikus g\u00e1tl\u00e1s hat\u00e1sa, 1.5% kitoz\u00e1n 1% ecetsavas oldat haszn\u00e1lhat\u00f3, hogy az eltarthat\u00f3s\u00e1gi id\u0151 ak\u00e1r 6d. v\u00edzben old\u00f3d\u00f3 kitoz\u00e1n tart\u00f3s\u00edt\u00f3 hat\u00e1sa valamivel alacsonyabb, mint a savban old\u00f3d\u00f3 kitoz\u00e1n\u00e9. 2.5% v\u00edzben old\u00f3d\u00f3 kitoz\u00e1n a t\u00e1rolhat\u00f3s\u00e1gi id\u0151t ak\u00e1r 5d-re is n\u00f6velheti.<\/p>\n

Kitoz\u00e1n \u00e9s oligoszacharid friss marhah\u00fas, a m\u00f3dszer a marhah\u00fas permetez\u00e9s 95% etanol, E-vitamin, hidroliz\u00e1lt kitoz\u00e1n, kitoz\u00e1n \u00e9s oligoszacharid, hidroliz\u00e1lt pektin \u00e9s \/ vagy lizozim kever\u00e9k, marhah\u00fas tart\u00f3s\u00edtott 3d mikroorganizmusok, mint a kontrollcsoport kevesebb.<\/p>\n

N\u00e9h\u00e1nyan tanulm\u00e1nyozt\u00e1k a 0,25% kitoz\u00e1n 1% ecetsavas oldat k\u00fcl\u00f6nb\u00f6z\u0151 polimeriz\u00e1ci\u00f3s fok\u00fa polimeriz\u00e1ci\u00f3j\u00e1t a friss spanyol makr\u00e9la, a kis s\u00e1rgafark\u00fa \u00e9s a friss sert\u00e9sh\u00fas tart\u00f3s\u00edt\u00f3 hat\u00e1s\u00e1ra, az eredm\u00e9nyek azt mutatj\u00e1k, hogy a kitoz\u00e1n alacsony polimeriz\u00e1ci\u00f3s foka jobb; ugyanakkor, de a garn\u00e9lar\u00e1k meg\u0151rz\u00e9s\u00e9t is tanulm\u00e1nyozta, a kitoz\u00e1n eredm\u00e9nyei jobbak, mint a fitinsav \u00e9s a n\u00e1trium-biszulfit \u00e9s m\u00e1s tart\u00f3s\u00edt\u00f3szerek.<\/p>\n

2. \u00c9lelmiszer-csomagol\u00f3 tart\u00e1lyok tart\u00f3s\u00edt\u00e1sa<\/strong><\/p>\n

A kitoz\u00e1n \u00e9s a gyanta a gy\u00far\u00e1ssal \u00e9s az extrud\u00e1l\u00e1ssal egy\u00fctt az \u00e9lelmiszer-tart\u00e1lyok elk\u00e9sz\u00edt\u00e9s\u00e9vel egy\u00fctt, legal\u00e1bb a tart\u00e1ly bels\u0151 r\u00e9teg\u00e9ben kitoz\u00e1nt tartalmaz, g\u00e1tolja a laktobacillusok n\u00f6veked\u00e9s\u00e9t, \u00e9s \u00edgy meghosszabb\u00edtja az \u00e9lelmiszer-tart\u00f3s\u00edt\u00e1si id\u0151t. Kitoz\u00e1n tejsavas oldat besziv\u00e1rgott a regener\u00e1ci\u00f3 a cellul\u00f3z sz\u00e1lak k\u00e9sz\u00fclt nem sz\u0151tt sz\u00f6vetek \u00e9s a kialakul\u00e1s\u00e1t friss anyagok, amelyekb\u0151l a h\u00fas, hal \u00e9s egy\u00e9b \u00e9lelmiszer-csomagol\u00e1s, elnyeli a sziv\u00e1rg\u00e1s \u00e9s megakad\u00e1lyozza a n\u00f6veked\u00e9s a staphylococcus bakt\u00e9riumok, Escherichia coli \u00e9s m\u00e1s mikroorganizmusok.<\/p>","protected":false},"excerpt":{"rendered":"

A kitoz\u00e1n, m\u00e1s n\u00e9ven deacetilezett kitin a term\u00e9szetben a m\u00e1sodik leggyakoribb biopolimer a cellul\u00f3z ut\u00e1n, \u00e9s sz\u00e9les k\u00f6rben elterjedt, f\u0151k\u00e9nt sz\u00e1mos alacsonyabb rend\u0171 \u00e1llat, k\u00fcl\u00f6n\u00f6sen az \u00edzeltl\u00e1b\u00faak, p\u00e9ld\u00e1ul a garn\u00e9lar\u00e1kok, r\u00e1kok, rovarok stb. p\u00e1nc\u00e9lj\u00e1ban, valamint alacsonyabb rend\u0171 n\u00f6v\u00e9nyek, p\u00e9ld\u00e1ul bakt\u00e9riumok, alg\u00e1k \u00e9s gomb\u00e1k sejtfal\u00e1ban. Becsl\u00e9sek szerint [...]<\/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":"\nWhat are the applications of chitosan (deacetyl chitin) in food? - 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\/kitozan-deacetilezett-kitin\/\" \/>\n<meta property=\"og:locale\" content=\"hu_HU\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What are the applications of chitosan (deacetyl chitin) in food? - China Chemical Manufacturer\" \/>\n<meta property=\"og:description\" content=\"Chitosan, also known as deacetylated chitin, is the second most abundant biopolymer in nature after cellulose, and is widely distributed, mainly in the shells of many lower animals, especially arthropods such as shrimps, crabs, insects, etc., and also in the cell walls of lower plants such as bacteria, algae and fungi. 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