I-Methylcellulose sisithako esiqhelekileyo sokutya. Senziwe nge-cellulose yendalo ngokuguqulwa kweekhemikhali. Sineempawu ezizinzileyo, ezijiyileyo neziqinisayo kwaye sisetyenziswa kakhulu kwishishini lokutya. Njengento eguqulweyo yokwenziwa, ukhuseleko lwayo ekutyeni belusoloko luxhalabisa.
1. Iimpawu kunye nemisebenzi ye-methylcellulose
Ulwakhiwo lwemolekyuli ye-methylcellulose lusekelwe kwi-βIyunithi ye-glucose eyi-1,4, eyenziwe ngokutshintsha amanye amaqela e-hydroxyl ngamaqela e-methoxy. Iyanyibilika emanzini abandayo kwaye ingenza ijeli eguqukayo phantsi kweemeko ezithile. Ineempawu ezilungileyo zokutyeba, i-emulsification, i-suspension, uzinzo kunye nokugcinwa kwamanzi. Le misebenzi yenza ukuba isetyenziswe kakhulu kwisonka, ii-pastries, iziselo, iimveliso zobisi, ukutya okukhenkcezisiweyo kunye nezinye iindawo. Umzekelo, inokuphucula ubume bentlama kwaye ilibazise ukuguga; ekutyeni okukhenkcezisiweyo, inokuphucula ukumelana nokukhenkceziswa.
Nangona inomsebenzi owahlukeneyo, i-methylcellulose ngokwayo ayifunxwa okanye ayigaywa emzimbeni womntu. Emva kokuyitya, ikhutshwa kakhulu ngendlela yokugaya ngendlela engaxutywanga, nto leyo eyenza ukuba impembelelo yayo ngqo emzimbeni womntu ibonakale incinci. Nangona kunjalo, olu phawu lukwavuse inkxalabo yabantu yokuba ukuyitya ixesha elide kunokuchaphazela impilo yamathumbu.
2. Uvavanyo lwetyhefu kunye nezifundo zokhuseleko
Izifundo ezininzi zetyhefu zibonise ukuba i-methylcellulose inokuvumelana kakuhle ne-biocompatibility kwaye inetyhefu ephantsi. Iziphumo zovavanyo lwetyhefu olukhawulezileyo zibonise ukuba i-LD50 yayo (idosi ephakathi ebulalayo) yayiphezulu kakhulu kunomlinganiselo osetyenziswa kwizongezo zokutya eziqhelekileyo, nto leyo ebonisa ukhuseleko oluphezulu. Kwiimvavanyo zetyhefu yexesha elide, iimpuku, iimpuku kunye nezinye izilwanyana azizange zibonise mpendulo zimbi xa zityiwa ixesha elide ngeedosi eziphezulu, kuquka iingozi ezifana ne-carcinogenicity, i-teratogenicity kunye netyhefu yokuzala.
Ukongeza, impembelelo ye-methylcellulose emathunjini omntu nayo ifundwe ngokubanzi. Ngenxa yokuba ayigaywa kwaye ayifunxwa, i-methylcellulose inokunyusa umthamo wendle, ikhuthaze i-intestinal peristalsis, kwaye ineenzuzo ezithile ekunciphiseni ukuqhina. Kwangaxeshanye, ayivundiswa yi-intestinal flora, nto leyo enciphisa umngcipheko we-flatulence okanye iintlungu zesisu.
3. Imigaqo nemigaqo
Ukusetyenziswa kwe-methylcellulose njengesithako sokutya kulawulwa ngokungqongqo kwihlabathi liphela. Ngokwengxelo yeKomiti yeeNgcali eziHlangeneyo kwiZithako zokuTya (i-JECFA) phantsi kwe-Food and Agriculture Organisation yeZizwe eziManyeneyo (i-FAO) kunye ne-World Health Organisation (i-WHO), i-methylcellulose evumelekileyo yokusetyenziswa imihla ngemihla "ayichazwanga", nto leyo ebonisa ukuba ikhuselekile ukuyisebenzisa ngaphakathi komlinganiselo ocetyiswayo.
E-United States, i-methylcellulose idweliswe njengesixhobo esikhuselekileyo (GRAS) esaziwa ngokubanzi yi-US Food and Drug Administration (FDA). Kwi-European Union, ihlelwa njenge-food additive E461, kwaye ukusetyenziswa kwayo okuphezulu ekutyeni okwahlukeneyo kuchazwe ngokucacileyo. E-China, ukusetyenziswa kwe-methylcellulose kulawulwa yi-"National Food Safety Standard Food Additive Usage Standard" (GB 2760), efuna ulawulo olungqongqo lwedosi ngokohlobo lokutya.
4. Izinto eziqwalaselwayo ngokhuseleko kwizicelo ezisebenzayo
Nangona ukhuseleko lulonke lwe-methylcellulose luphezulu, ukusetyenziswa kwayo ekutyeni kusafuneka kuqwalaselwe la manqaku alandelayo:
Umlinganiselo: Ukutya kakhulu kunokutshintsha indlela ukutya okukhangeleka ngayo kwaye kuchaphazele umgangatho weemvakalelo; kwangaxeshanye, ukutya kakhulu izinto ezinefayibha eninzi kunokubangela ukudumba okanye ukungakhululeki kancinci kokugaya ukutya.
Abantu ekujoliswe kubo: Kubantu abangasebenzi kakuhle kwamathumbu (njengabantu abadala okanye abantwana abancinci), iidosi eziphezulu ze-methylcellulose zinokubangela ukungagayi kakuhle kokutya okwethutyana, ngoko ke kufuneka zikhethwe ngononophelo.
Ukusebenzisana nezinye izithako: Kwezinye iintlobo zokutya, i-methylcellulose inokuba nefuthe lokusebenzisana nezinye izongezo okanye izithako, kwaye iziphumo zazo ezidibeneyo kufuneka ziqwalaselwe.
5. Isishwankathelo kunye neMbono
Nje,i-methylcellulose sisithako sokutya esikhuselekileyo nesisebenzayo esingayi kubangela umonakalo omkhulu kwimpilo yabantu ngaphakathi koluhlu olufanelekileyo lokusetyenziswa. Iimpawu zaso ezingenakufunxwa zisenza sizinze kwindlela yokugaya ukutya kwaye zinokuzisa iingenelo ezithile zempilo. Nangona kunjalo, ukuze kuqinisekiswe ngakumbi ukhuseleko lwaso ekusetyenzisweni ixesha elide, kuyimfuneko ukuqhubeka nokuqwalasela izifundo ezifanelekileyo zetyhefu kunye nedatha yokusetyenziswa kwayo, ingakumbi impembelelo yaso kwiindawo ezikhethekileyo.
Ngokuphuhliswa kweshishini lokutya kunye nokuphuculwa kwemfuno yabathengi yomgangatho wokutya, umda wokusetyenziswa kwe-methylcellulose unokwandiswa ngakumbi. Kwixesha elizayo, kufuneka kuhlolwe usetyenziso olutsha ngakumbi ngesiseko sokuqinisekisa ukhuseleko lokutya ukuze kunikelwe ixabiso elikhulu kwishishini lokutya.
Ixesha leposi: Disemba-21-2024