Methylcellulose ndi wamba chakudya chowonjezera. Amapangidwa kuchokera ku cellulose yachilengedwe kudzera mukusintha kwamankhwala. Ili ndi kukhazikika bwino, gelling ndi thickening katundu ndipo imagwiritsidwa ntchito kwambiri m'makampani azakudya. Monga chinthu chosinthidwa mwachisawawa, chitetezo chake muzakudya chakhala chodetsa nkhawa kuyambira kale.
1. Katundu ndi ntchito za methylcellulose
Mapangidwe a maselo a methylcellulose amachokera kuβ-1,4-glucose unit, yomwe imapangidwa posintha magulu ena a hydroxyl ndi magulu a methoxy. Amasungunuka m'madzi ozizira ndipo amatha kupanga gel osinthika pansi pazifukwa zina. Ili ndi makulidwe abwino, emulsification, kuyimitsidwa, kukhazikika komanso kusunga madzi. Izi zimapangitsa kuti zigwiritsidwe ntchito kwambiri mu mkate, makeke, zakumwa, mkaka, zakudya zozizira ndi zina. Mwachitsanzo, imatha kusintha mawonekedwe a mtanda ndikuchedwa kukalamba; muzakudya zowuma, zimatha kusintha kukana kuzizira.
Ngakhale kuti methylcellulose imagwira ntchito zosiyanasiyana, sichimatengedwa kapena kupangidwa m'thupi la munthu. Pambuyo poyamwa, imatulutsidwa makamaka kudzera m'mimba mwa mawonekedwe osasunthika, zomwe zimapangitsa kuti thupi la munthu likhale lochepa. Komabe, khalidweli ladzutsanso nkhawa anthu kuti kudya kwake kwa nthawi yaitali kungakhudze thanzi la m'mimba.
2. Kuwunika kwa Toxicological ndi maphunziro achitetezo
Kafukufuku wambiri wa toxicological awonetsa kuti methylcellulose ili ndi biocompatibility yabwino komanso kawopsedwe kochepa. Zotsatira za mayeso owopsa a kawopsedwe zidawonetsa kuti LD50 yake (mlingo wakupha wapakatikati) inali yokwera kwambiri kuposa kuchuluka komwe kumagwiritsidwa ntchito pazowonjezera wamba, kuwonetsa chitetezo chokwanira. Pakuyesa kwapoizoni kwanthawi yayitali, makoswe, mbewa ndi nyama zina sizinawonetse zovuta pakudyetsedwa kwanthawi yayitali pamilingo yayikulu, kuphatikiza zoopsa monga carcinogenicity, teratogenicity ndi kawopsedwe ka uchembere.
Kuphatikiza apo, zotsatira za methylcellulose m'matumbo amunthu zaphunziridwanso kwambiri. Chifukwa sichigayidwa ndi kutengeka, methylcellulose imatha kuwonjezera kuchuluka kwa chopondapo, kulimbikitsa m'mimba peristalsis, ndipo imakhala ndi mapindu ena pochotsa kudzimbidwa. Panthawi imodzimodziyo, siifufuzidwa ndi zomera za m'mimba, kuchepetsa chiopsezo cha flatulence kapena kupweteka kwa m'mimba.
3. Malamulo ndi zikhalidwe
Kugwiritsiridwa ntchito kwa methylcellulose monga chowonjezera cha chakudya kumayendetsedwa mosamalitsa padziko lonse lapansi. Malinga ndi kuwunika kwa Joint Expert Committee on Food Additives (JECFA) pansi pa Food and Agriculture Organisation ya United Nations (FAO) ndi World Health Organisation (WHO), kudya kovomerezeka kwatsiku ndi tsiku (ADI) kwa methylcellulose "sikutchulidwa. ", kusonyeza kuti ndizotetezeka kugwiritsa ntchito mulingo wovomerezeka.
Ku United States, methylcellulose amalembedwa ngati chinthu chodziwika bwino (GRAS) ndi US Food and Drug Administration (FDA). Ku European Union, imatchedwa kuti E461 yowonjezera chakudya, ndipo kugwiritsidwa ntchito kwake kwakukulu muzakudya zosiyanasiyana kumafotokozedwa momveka bwino. Ku China, kugwiritsidwa ntchito kwa methylcellulose kumayendetsedwanso ndi "National Food Safety Standard Food Additive Usage Standard" (GB 2760), yomwe imafuna kuwongolera kwambiri kwa mlingo molingana ndi mtundu wa chakudya.
4. Zoganizira za chitetezo muzogwiritsira ntchito
Ngakhale chitetezo chonse cha methylcellulose ndichokwera kwambiri, kugwiritsa ntchito kwake muzakudya kumafunikabe kulabadira mfundo izi:
Mlingo: Kuwonjezera kwambiri kungasinthe kapangidwe ka chakudya ndikukhudza momwe mumamvera; nthawi yomweyo, kudya kwambiri kwa ulusi wambiri kungayambitse kutupa kapena kusapeza bwino m'mimba.
Anthu omwe ali ndi vuto la m'mimba (monga okalamba kapena ana aang'ono), mlingo waukulu wa methylcellulose ungayambitse kudzimbidwa pakapita nthawi, choncho ayenera kusankhidwa mosamala.
Kuyanjana ndi zosakaniza zina: Pazakudya zina, methylcellulose imatha kukhala ndi mphamvu yolumikizana ndi zowonjezera kapena zosakaniza zina, ndipo zotsatira zake zophatikiza ziyenera kuganiziridwa.
5. Chidule ndi Outlook
Mwambiri,methylcellulose ndi chowonjezera chotetezeka komanso chothandiza chazakudya chomwe sichingawononge thanzi la anthu pakagwiritsidwe ntchito koyenera. Kusasunthika kwake kumapangitsa kuti ikhale yokhazikika m'matumbo am'mimba ndipo imatha kubweretsa thanzi labwino. Komabe, pofuna kuonetsetsa kuti chitetezo chake chikugwiritsidwa ntchito kwa nthawi yayitali, m'pofunika kupitiriza kumvetsera maphunziro okhudzana ndi toxicological ndi deta yogwiritsira ntchito, makamaka momwe zimakhudzira anthu apadera.
Ndi chitukuko chamakampani azakudya komanso kuwongolera kwazomwe ogula amafuna pazakudya, kuchuluka kwa kugwiritsidwa ntchito kwa methylcellulose kutha kukulitsidwa. M'tsogolomu, ntchito zatsopano ziyenera kufufuzidwa pamalingaliro owonetsetsa kuti chakudya chili chotetezeka kubweretsa phindu lalikulu kumakampani azakudya.
Nthawi yotumiza: Dec-21-2024