Ukugcinwa kwamanzi yipropathi ebalulekileyo yamashishini amaninzi asebenzisa izinto ze-hydrophilic ezifana neeseluplose. I-HydroxypropyTelmethylcelcelcelcelcelcelcelcebalose (i-HPMC) yenye yeeselsulose I-HPMC yi-polymer ye-semi-synthemetic ethathwe kwisellumse kwaye isetyenziswa rhoqo kwizicelo ezahlukeneyo ekwakhiweni, amayeza okutya.
I-HPMC isetyenziswa ngokubanzi njenge-thi chuker, i-sticker kunye ne-emulsifier kwiimveliso zokutya ezifana ne-ice cream, iisosi kunye nokunxiba ukongeza ukuthungwa, ukungqinelana kunye nobomi beshelup. I-HPMC ikwasetyenziswa kwimveliso yamayeza kumzi-mveliso wamachiza njenge-binder, intsholongwane kunye nearhente yefilimu. Ikwasetyenziswa njengearhente yokugcina amanzi ekwakhiweni, ikakhulu kwisamente kunye nodaka.
Ukugcinwa kwamanzi yipropathi ebalulekileyo ekwakheni kuba iyanceda ukugcina isamente exubeneyo kunye nodaka ukuba luphume. Ukomisa kunokubangela i-shrinkage kwaye ikhwele, ikhokelela kwimibutho ebuthathaka nengazinzanga. I-HPMC inceda ukugcina umxholo wamanzi kwisamente kunye nodaka ngokufumana iimolekyuli zamanzi kunye nokukhulula ngokuthe ngcembe ngokuhamba kwexesha, ukuvumela izinto zokwakha ukuze zinyange ngokufanelekileyo.
Umgaqo-nkqubo wokugcina amanzi kwi-HPMC usekwe kwi-hydrophicicity. Ngenxa yobukho bamaqela e-hydroxyl (------------------Act kwimo yayo yeemolekyuli, i-HPMC inezinto ezimbi kakhulu zamanzi. Amaqela e-hydroxyl enxibelelana neemolekyuli zamanzi ukwenza iibhondi ze-hydrogen, okukhokelela ekubekweni kweqokobhe le-hydration ejikeleze amakhonkco e-polymer. Igobolondo ye-hydiration ivumela imixokelelwane yePolymer ukuba ikhule, yandisa ivolumu ye-HPMC.
Ukudumba kwe-HPMC yinkqubo eguqukayo exhomekeke kwimiba eyahlukeneyo enjengesiqinisekiso sokufakwa endaweni (DS), ubungakanani be-suricle, ubushushu kunye pH. Inqanaba lokufaka endaweni libhekisa kwinani le-hydroxyl yamaqela afakwe kwiyunithi ye-anhydroglucose kwikhonkco leselselose. Ukuphakama kwexabiso le-DS, ukuphakama kwe-hydrophility kunye nokungcono ukusebenza kwendlela yokugcina amanzi. Ubungakanani be-HPMC buchaphazela ukugcinwa kwamanzi, njengamasuntswana amancinci anendawo enkulu yeyunithi yobunzima beyunithi, okukhokelela ekungeneni kwamanzi. Iqondo lobushushu kunye nexabiso le-PH lichaphazela inqanaba lokudumba kunye nokugcinwa kwamanzi, kunye nobushushu obuphezulu kunye nexabiso le-pH lingaphezulu kwexabiso lokudumba kunye nokugcinwa kwamanzi kwi-HPMC.
Indlela yokugcina amanzi ye-HPMC ibandakanya iinkqubo ezimbini: ukufunxa kunye nokuthathwa. Ngexesha lokufudukela, i-HPMC ifumana iimolekyuli zamanzi ukusuka kwindawo engqongileyo, yenza iqokobhe elijikelezayo ngeenxa zonke kumakhonkco ePolymer. Igobolondo ye-hydration ithintela amakhonkco ePolymer ukuba angawa kwaye azigcine zahlukane, zikhokelela ekudumbeleni i-HPMC. Iimolekyuli zamanzi ezivunyiweyo zenza i-Hydrogen Bonds ngamaqela e-hydroxyl kwi-HPMC, efuna umsebenzi wokugcina amanzi.
Ngexesha lokufudukela, i-HPMC ikhupha kancinci iimolekyuli zamanzi, ivumela izinto zokwakha ukuze ziphilise ngokufanelekileyo. Ukukhutshwa kancinci kweemolekyuli zamanzi kuqinisekisa ukuba isamente kunye nodaka zihlala zihlisiwe kakhulu, zikhokelela kwisakhiwo esiqingqiweyo nesiqinileyo. Ukukhutshwa kancinci kweemolekyuli zamanzi kwakhona kubonelela ngamanzi rhoqo kwisamente kunye nodaka, ukuphucula inkqubo yonyango kunye nokunyusa amandla kunye nokuzinza kwemveliso yokugqibela.
Kwisishwankathelo, ukugcinwa kwamanzi yipropathi ebalulekileyo kumashishini amaninzi asebenzisa izinto ze-hydrophilic ezifana neeseli. I-HPMC yenye yeselsulose esuka kwiiPropathi zeTyala zamanzi kwaye isetyenziswa ngokubanzi ekwakhiweni, amayeza okutya. Iipropathi zokugcina amanzi kwi-HPMC zisekwe kwi-hydrophility, eyenza ukuba ifumane iimolethi zamanzi kwindawo engqongileyo, yenza iqokobhe elijikelezayo ngeenxa zonke. Igobolondo ye-hydiration ibangela ukuba i-HPMC idumbe, kwaye ukukhululwa kancinci kweemolekyuli zamanzi kuqinisekisa ukuba izinto zokwakha zihlala ziyi-hyddis, kukhokelela kwisakhiwo esiqingqiweyo nesiqinileyo.
IXESHA LOKUQALA: AUG-24-2023