I-Methylcellulose iyisengezo sokudla esivamile. Yenziwe nge-cellulose yemvelo ngokuguqulwa kwamakhemikhali. Inezakhiwo ezinhle zokuqina, i-gelling kanye nokuqina futhi isetshenziswa kabanzi embonini yokudla. Njengento eguqulwe ngokwenziwa, ukuphepha kwayo ekudleni sekuyisikhathi eside kuyinkinga.
1. Izakhiwo nemisebenzi ye-methylcellulose
Isakhiwo sama-molecule se-methylcellulose sisekelwe ku-βIyunithi ye-glucose engu-1,4, eyakhiwa ngokufaka amanye amaqembu e-hydroxyl esikhundleni samaqembu e-methoxy. Iyancibilika emanzini abandayo futhi ingakha ijeli eguqukayo ngaphansi kwezimo ezithile. Inezakhiwo ezinhle zokujiya, i-emulsification, i-suspension, i-stability kanye nokugcina amanzi. Le misebenzi iyenza isetshenziswe kabanzi ezinkweni, kuma-pastry, eziphuzweni, emikhiqizweni yobisi, ekudleni okuqandisiwe nakwezinye izinkambu. Isibonelo, ingathuthukisa ukuthungwa kwenhlama futhi ilibazise ukuguga; ekudleni okuqandisiwe, ingathuthukisa ukumelana nokuqandisiwe.
Naphezu kwemisebenzi yayo eyahlukahlukene, i-methylcellulose ngokwayo ayimuncwa noma ayigaywa emzimbeni womuntu. Ngemva kokuyidla, ikhishwa kakhulu ngendlela yokugaya ukudla ngendlela engaxutshwe, okwenza umthelela wayo oqondile emzimbeni womuntu ubonakale ulinganiselwe. Kodwa-ke, lesi sici siphinde savusa ukukhathazeka kwabantu ngokuthi ukudla kwayo isikhathi eside kungathinta impilo yamathumbu.
2. Ukuhlolwa kobuthi kanye nezifundo zokuphepha
Izifundo eziningi zobuthi zikhombisile ukuthi i-methylcellulose inokuvumelana okuhle kwezinto eziphilayo kanye nobuthi obuphansi. Imiphumela yokuhlolwa kobuthi obukhulu ibonise ukuthi i-LD50 yayo (umthamo obulalayo ophakathi) yayiphezulu kakhulu kunenani elisetshenziswa ezithasiselweni zokudla ezivamile, okubonisa ukuphepha okuphezulu. Ekuhlolweni kobuthi besikhathi eside, amagundane, amagundane nezinye izilwane azizange zibonise ukusabela okubi okukhulu ngaphansi kokudla isikhathi eside ngemithamo ephezulu, okuhlanganisa izingozi ezifana nokuba nomdlavuza, ukuba khona kwe-teratogenic kanye nobuthi bokuzala.
Ngaphezu kwalokho, umphumela we-methylcellulose emathunjini omuntu nawo ufundwe kabanzi. Ngenxa yokuthi ayigaywa futhi ayimuncwa, i-methylcellulose ingandisa umthamo wendle, ikhuthaze i-peristalsis yamathumbu, futhi inezinzuzo ezithile ekunciphiseni ukuqunjelwa. Ngesikhathi esifanayo, ayivundiswa yizitshalo zamathumbu, okunciphisa ingozi yokuqunjelwa noma ubuhlungu besisu.
3. Imithethonqubo kanye nemigomo
Ukusetshenziswa kwe-methylcellulose njengesithako sokudla kulawulwa ngokuqinile emhlabeni wonke. Ngokusho kokuhlolwa kweKomidi Elihlangene Lochwepheshe Bezithako Zokudla (i-JECFA) ngaphansi kwe-Food and Agriculture Organization ye-United Nations (FAO) kanye ne-World Health Organization (WHO), ukudla okuvunyelwe nsuku zonke (i-ADI) kwe-methylcellulose "akucacisiwe", okubonisa ukuthi kuphephile ukuyisebenzisa ngaphakathi kwesilinganiso esinconywayo.
E-United States, i-methylcellulose ibhalwe njengesidakamizwa esiphephile (i-GRAS) esiqashelwa yi-US Food and Drug Administration (FDA). E-European Union, ihlukaniswa njengesengezo sokudla i-E461, futhi ukusetshenziswa kwayo okuphezulu ekudleni okuhlukene kuchazwe ngokucacile. E-China, ukusetshenziswa kwe-methylcellulose kulawulwa yi-"National Food Safety Standard Food Additive Usage Standard" (GB 2760), edinga ukulawulwa okuqinile komthamo ngokuya ngohlobo lokudla.
4. Izinto okufanele uzicabangele ngokuphepha ezisetshenziswayo
Nakuba ukuphepha okuphelele kwe-methylcellulose kuphezulu kakhulu, ukusetshenziswa kwayo ekudleni kusadingeka kunake amaphuzu alandelayo:
Isilinganiso: Ukwengeza ngokweqile kungashintsha ukuthungwa kokudla futhi kuthinte ikhwalithi yezinzwa; ngesikhathi esifanayo, ukudla ngokweqile izinto ezine-fiber ephezulu kungabangela ukuqunjelwa noma ukungakhululeki okuncane kokugaya ukudla.
Abantu abahlosiwe: Kubantu abanomsebenzi obuthakathaka wamathumbu (njengabantu asebekhulile noma izingane ezincane), imithamo ephezulu ye-methylcellulose ingabangela ukungagayi kahle kokudla esikhathini esifushane, ngakho-ke kufanele ikhethwe ngokucophelela.
Ukusebenzisana nezinye izithako: Kwezinye izinhlobo zokudla, i-methylcellulose ingaba nomphumela wokubambisana nezinye izithako noma izithako, futhi imiphumela yazo ehlangene idinga ukucatshangelwa.
5. Isifinyezo kanye Nombono
Ngenjwayelo,i-methylcellulose iyisengezo sokudla esiphephile nesisebenzayo esingeke sibangele umonakalo omkhulu empilweni yabantu ngaphakathi kobubanzi obufanele bokusetshenziswa. Izakhiwo zayo ezingenakumuncwa zenza ukuthi iqine kahle endleleni yokugaya ukudla futhi ingaletha izinzuzo ezithile zempilo. Kodwa-ke, ukuze kuqinisekiswe ukuphepha kwayo ekusetshenzisweni kwesikhathi eside, kubalulekile ukuqhubeka nokunaka izifundo ezifanele zobuthi kanye nedatha yokusetshenziswa okusebenzayo, ikakhulukazi umthelela wayo ezinhlotsheni ezikhethekile.
Ngokuthuthuka kwemboni yokudla kanye nokuthuthuka kwesidingo sabathengi sekhwalithi yokudla, ububanzi bokusetshenziswa kwe-methylcellulose bungase bunwetshwe kakhulu. Esikhathini esizayo, kufanele kuhlolwe izinhlelo zokusebenza ezintsha ngesisekelo sokuqinisekisa ukuphepha kokudla ukuze kulethwe inani elikhulu embonini yokudla.
Isikhathi sokuthunyelwe: Disemba-21-2024