Xanthan gum thiab Hydroxyethyl cellulose (HEC) yog ob qho tib si hydrocolloids siv nyob rau hauv ntau yam lag luam, tshwj xeeb tshaj yog nyob rau hauv cov khoom noj, tshuaj, thiab cov khoom tu tus kheej.Txawm hais tias qee qhov zoo sib xws hauv lawv daim ntawv thov, lawv txawv ntawm lawv cov qauv tshuaj, khoom, thiab kev ua haujlwm.
1.Chemical Structure:
Xanthan gum: Nws yog polysaccharide muab los ntawm fermentation ntawm carbohydrates, feem ntau qabzib, los ntawm cov kab mob Xanthomonas campestris.Nws muaj cov pob txha ntawm cov kua nplaum uas nyob nrog cov kab sib txuas ntawm trisaccharide rov ua haujlwm, suav nrog mannose, glucuronic acid, thiab qabzib.
HEC: Hydroxyethyl cellulose yog non-ionic cellulose ether muab tau los ntawm cellulose, ib txwm tshwm sim polysaccharide pom nyob rau hauv cov nroj tsuag cell phab ntsa.HEC tau hloov kho los ntawm kev qhia cov pab pawg hydroxyethyl mus rau cov pob txha cellulose.
2. Solubility:
Xanthan cov pos hniav: Nws nthuav tawm siab solubility hauv dej txias thiab dej kub.Nws tsim cov kua nplaum uas muaj kuab heev txawm tias muaj qhov tsis tshua muaj siab.
HEC: Hydroxyethyl cellulose yog soluble hauv dej, thiab nws cov solubility tuaj yeem sib txawv nyob ntawm qhov kev hloov pauv (DS) ntawm pawg hydroxyethyl.Siab dua DS feem ntau ua rau muaj kev ua kom zoo dua.
3.Viscosity:
Xanthan gum: Nws yog lub npe hu rau nws cov khoom tshwj xeeb thickening.Txawm tias nyob rau hauv tsawg concentrations, xanthan cov pos hniav tuaj yeem ua rau kom cov viscosity ntawm kev daws.
HEC: Lub viscosity ntawm HEC cov kev daws teeb meem kuj nyob ntawm cov yam ntxwv xws li concentration, kub, thiab shear npaum li cas.Feem ntau, HEC nthuav tawm cov khoom thickening zoo, tab sis nws cov viscosity qis dua piv rau xanthan cov pos hniav ntawm qhov sib npaug.
4.Shear Thinning Cwj Pwm:
Xanthan cov pos hniav: Kev daws teeb meem ntawm xanthan cov pos hniav feem ntau pom tus cwj pwm shear-thinning, txhais tau tias lawv cov viscosity txo qis hauv kev nyuaj siab shear thiab rov qab thaum qhov kev ntxhov siab raug tshem tawm.
HEC: Ib yam li ntawd, HEC cov kev daws teeb meem kuj ua rau pom tus cwj pwm shear-thinning, txawm hais tias qhov ntau npaum li cas yuav txawv nyob ntawm cov qib tshwj xeeb thiab cov kev daws teeb meem.
5.Compatibility:
Xanthan gum: Nws yog sib xws nrog ntau yam ntawm lwm yam hydrocolloids thiab cov khoom xyaw uas nquag siv hauv cov khoom noj thiab kev tu tus kheej.Nws tuaj yeem ua kom ruaj khov emulsions.
HEC: Hydroxyethyl cellulose kuj tau sib xws nrog ntau yam khoom xyaw thiab tuaj yeem siv ua ke nrog lwm cov thickeners thiab stabilizers kom ua tiav cov khoom rheological xav tau.
6.Synergy nrog Lwm Cov Thickeners:
Xanthan cov pos hniav: Nws nthuav tawm cov teebmeem kev sib koom ua ke thaum ua ke nrog lwm cov hydrocolloids xws li guar gum los yog locust taum cov pos hniav, uas ua rau kom muaj viscosity thiab stability.
HEC: Ib yam li ntawd, HEC tuaj yeem sib koom ua ke nrog lwm cov thickeners thiab polymers, muab ntau yam hauv kev tsim cov khoom nrog cov kev ntxhib los mos thiab kev ua haujlwm.
7. Cov cheeb tsam thov:
Xanthan gum: Nws pom kev siv dav hauv cov khoom noj khoom haus (xws li, kua ntses, hnav khaub ncaws, khoom noj siv mis), cov khoom siv tu tus kheej (xws li, tshuaj pleev, pleev, tshuaj txhuam hniav), thiab cov khoom lag luam (xws li cov kua dej, cov xim pleev xim).
HEC: Hydroxyethyl cellulose feem ntau yog siv rau hauv cov khoom siv tu tus kheej (xws li, tshuaj zawv plaub hau, tshuaj ntxuav lub cev, tshuaj pleev ib ce), tshuaj (xws li, tshuaj kho qhov muag, tshuaj pleev qhov ncauj), thiab cov ntaub ntawv tsim kho (xws li, xim, nplaum).
8. Nqi thiab Muaj:
Xanthan gum: Nws feem ntau kim dua piv rau HEC, feem ntau yog vim cov txheej txheem fermentation koom nrog hauv nws cov khoom.Txawm li cas los xij, nws txoj kev siv dav thiab muaj nyob rau hauv nws cov khoom lag luam ruaj khov.
HEC: Hydroxyethyl cellulose yog tus nqi qis dua piv rau xanthan cov pos hniav.Nws yog dav tsim los ntawm kev hloov kho tshuaj ntawm cellulose, uas muaj ntau nyob rau hauv xwm.
thaum xanthan cov pos hniav thiab HEC qhia qee qhov zoo sib xws hauv lawv daim ntawv thov raws li hydrocolloids, lawv pom qhov sib txawv ntawm lawv cov qauv tshuaj, solubility, viscosity, shear-thinning tus cwj pwm, kev sib raug zoo, sib koom ua ke nrog lwm cov thickeners, daim ntawv thov, thiab nqi.Kev nkag siab txog qhov sib txawv no yog qhov tseem ceeb rau cov neeg tsim qauv xaiv cov hydrocolloid uas tsim nyog tshaj plaws rau cov khoom tsim tshwj xeeb thiab cov yam ntxwv xav tau.
Lub sij hawm xa tuaj: Plaub Hlis-11-2024