I-Carboxymethyl Cellulose (CMC) iyinhlanganisela ebalulekile ye-polymer encibilika emanzini esetshenziswa kakhulu ekudleni, emithini yemithi, kumakhemikhali ansuku zonke, izindwangu neminye imikhakha. Embonini yokudla, okunye okubaluleke kakhulu ukusetshenziswa kwe-CMC njengokuqina. Ama-thickeners ayikilasi lezithasiselo ezikhulisa i-viscosity yoketshezi ngaphandle kokushintsha kakhulu ezinye izakhiwo zoketshezi.
1. Isakhiwo samakhemikhali kanye nesimiso sokuqina se-carboxymethyl cellulose
I-Carboxymethylcellulose iphuma ku-cellulose eyakhiwe ngokushintsha ingxenye yamaqembu e-hydroxyl (-OH) ye-cellulose ngamaqembu e-carboxymethyl (-CH2COOH). Iyunithi yayo yesakhiwo eyisisekelo iketango eliphindayo le-β-D-glucose. Ukwethulwa kwamaqembu e-carboxymethyl kunikeza i-CMC i-hydrophilicity, ikunikeza ukuncibilika okuhle nekhono lokujiya emanzini. Umgomo wayo wokujiya usekelwe ikakhulukazi kumaphuzu alandelayo:
Umphumela wokuvuvukala: I-CMC izovuvukala ngemva kokumunca ama-molecule amanzi emanzini, yakha isakhiwo senethiwekhi, ukuze ama-molecule amanzi athathwe esakhiweni sawo, okwandisa i-viscosity yesistimu.
Umthelela wokushaja: Amaqembu e-carboxyl ku-CMC azofakwa i-ioni emanzini ukuze akhiqize izindleko ezingezinhle. Lawa maqembu akhokhisiwe azokwakha i-electrostatic repulsion emanzini, okubangela ukuthi amaketanga e-molecular avuleke futhi enze isisombululo esine-viscosity ephezulu.
Ubude beketango nokugxilisa ingqondo: Ubude beketango nokugxiliswa kwesixazululo kwama-molecule e-CMC kuzothinta umphumela wawo wokujiya. Ngokuvamile, ukuphakama kwesisindo samangqamuzana, i-viscosity enkulu yesisombululo; ngesikhathi esifanayo, ukuphakama kwesisombululo esiphezulu, i-viscosity yesistimu nayo iyanda.
I-molecular cross-linking: Lapho i-CMC incibilika emanzini, ngenxa yokuxhumanisa phakathi kwama-molecule kanye nokwakheka kwesakhiwo senethiwekhi, ama-molecule amanzi avinjelwe ezindaweni ezithile, okuholela ekwehleni koketshezi lwesixazululo, ngaleyo ndlela kubonise ukuqina umphumela.
2. Ukusetshenziswa kwe-carboxymethyl cellulose embonini yokudla
Embonini yokudla, i-carboxymethylcellulose isetshenziswa kabanzi njenge-thickener. Okulandelayo yizimo zohlelo lokusebenza ezijwayelekile:
Iziphuzo kanye nemikhiqizo yobisi: Kujusi wezithelo neziphuzo ze-lactobacillus, i-CMC ingakhuphula i-viscosity yesiphuzo, ithuthukise ukunambitheka futhi inwebe isikhathi seshalofu. Ikakhulukazi emikhiqizweni yobisi enamafutha aphansi futhi engenawo amafutha, i-CMC ingashintsha ingxenye yamafutha obisi futhi ithuthukise ukuthungwa nokuzinza komkhiqizo.
Amasoso nama-condiments: Ekugqokeni kwesaladi, isosi katamatisi nesoso yesoya, i-CMC isebenza njenge-ejenti ejiya futhi elengayo ukuze ithuthukise ukufana komkhiqizo, igweme ukubola, futhi yenze umkhiqizo uzinze kakhudlwana.
U-ayisikhilimu neziphuzo ezibandayo: Ukwengeza i-CMC ku-ayisikhilimu neziphuzo ezibandayo kungathuthukisa ukwakheka komkhiqizo, kuwenze uminyene futhi unwebeke, kuvimbele ukwakheka kwamakristalu eqhwa nokuthuthukisa ukunambitheka.
Imikhiqizo yesinkwa nebhakiwe: Emikhiqizweni ebhakiwe njengesinkwa namakhekhe, i-CMC isetshenziswa njengesithuthukisi senhlama ukuze kuthuthukiswe ukunwebeka kwenhlama, ukwenza isinkwa sithambe, futhi andise impilo yeshalofu.
3. Okunye ukujiya kwe-carboxymethyl cellulose
Ngaphezu kokudla, i-carboxymethylcellulose ivame ukusetshenziswa njenge-thickener kwezemithi, izimonyo, amakhemikhali nsuku zonke nezinye izimboni. Ngokwesibonelo:
Embonini yemithi: Emithi, i-CMC ivamise ukusetshenziselwa ukujiya amasyrups, amaphilisi, namaphilisi, ukuze imithi ibe nemiphumela engcono yokubumba kanye nokuhlakazeka, futhi ithuthukise ukuzinza kwemithi.
Izimonyo namakhemikhali ansuku zonke: Kumakhemikhali ansuku zonke afana ne-toothpaste, i-shampoo, ijeli yokugeza, njll., i-CMC ingakhuphula ukuvumelana komkhiqizo, ithuthukise isipiliyoni sokusebenzisa, futhi yenze umfaniswano wokunamathisela futhi uzinze.
4. Ukuphepha kwe-carboxymethyl cellulose
Ukuphepha kwe-carboxymethylcellulose kuqinisekiswe izifundo eziningi. Njengoba i-CMC isuselwa ku-cellulose yemvelo futhi ingagayiwe futhi imuncwe emzimbeni, ngokuvamile ayinawo umthelela omubi empilweni yomuntu. Kokubili iNhlangano Yezempilo Yomhlaba (i-WHO) kanye neKomidi Lochwepheshe Elihlanganyelwe Lezithasiselo Zokudla (JECFA) bakuhlukanisa njengesithako sokudla esiphephile. Ngedosi ephusile, i-CMC ayikhiqizi ukusabela okunobuthi futhi inemiphumela ethile yokuthambisa kanye ne-laxative emathunjini. Kodwa-ke, ukudla ngokweqile kungase kubangele ukungakhululeki kwesisu, ngakho-ke izindinganiso ezinqunyiwe zemithamo kufanele zilandelwe ngokuqinile ekukhiqizweni kokudla.
5. Izinzuzo kanye nokubi kwe-carboxymethylcellulose
I-Carboxymethylcellulose inezinzuzo zayo kanye nemikhawulo njenge-thickener:
Izinzuzo: I-CMC inokuncibilika okuhle kwamanzi, ukuzinza kokushisa kanye nokuzinza kwamakhemikhali, inokumelana ne-asidi ne-alkali, futhi awonakali kalula. Lokhu kuvumela ukuthi isetshenziswe ezindaweni ezihlukahlukene zokucubungula.
Ukungalungi: I-CMC ingase ibe ne-viscous kakhulu ekugxilweni okuphezulu futhi ayilungele yonke imikhiqizo. I-CMC izokwehlisa isithunzi endaweni ene-asidi, okuholela ekwehleni komphumela wayo wokujiya. Ukuqapha kuyadingeka lapho uyisebenzisa eziphuzweni ezine-acidic noma ekudleni.
Njenge-thickener ebalulekile, i-carboxymethylcellulose isetshenziswa kakhulu ekudleni, emithini, kwezimonyo nakweminye imikhakha ngenxa yokuncibilika kwayo okuhle kwamanzi, ukujiya nokuzinza. Ukuqina kwayo okuphezulu nokuphepha kuyenza ibe isithasiselo esisetshenziswa kakhulu embonini yesimanje. Kodwa-ke, ukusetshenziswa kwe-CMC nakho kudinga ukulawulwa ngokwesayensi ngokuya ngezidingo ezithile kanye namazinga omthamo ukuze kuqinisekiswe ukwenziwa kahle kokusebenza kwayo nokuphepha kokudla.
Isikhathi sokuthumela: Nov-04-2024