Cov ntsiab lus tseem ceeb ntawm xanthan cov pos hniav yog xanthan polysaccharide saw -ib qho polysaccharide uas muaj xws li rov ua pentasaccharide units. Cov pob txha pob txha polysaccharide feem ntau muaj cov piam thaj, thaum cov hlua sab nraud tawm ntawm cov pob txha muaj mannose thiab glucuronic acid. Glucose muab cov qauv kev ruaj ntseg thiab tsim cov pob txha pob txha, qhov uas cov hlua sab tsim los ntawm mannose thiab glucuronic acid tsis tsuas yog txhim kho cov molecule peb -spatial qauv tab sis kuj endow xanthan cov pos hniav nrog cov dej muaj zog solubility thiab colloidal zog. Nws yog qhov tseeb no cov qauv polysaccharide tshwj xeeb uas ua rau xanthan cov pos hniav los tsim cov viscosity siab txawm tias tsis tshua muaj siab thiab ua kom muaj kev ruaj ntseg zoo.
Cov glucuronic acid residues nyob rau hauv xanthan polysaccharide chains muaj carboxyl pawg; Thaum lub sij hawm ua, cov carboxyl pawg no tuaj yeem tsim cov ntsev nrog cov hlau ions- xws li sodium, potassium, lossis calcium- los tsim xanthan cov pos hniav. Cov pawg carboxylate no yog thawj qhov laj thawj xanthan cov pos hniav dissolves hauv dej thiab tsim cov colloidal dispersions. Lawv muab rau xanthan cov pos hniav ua rau cov kua qaub, cov hauv paus, ntsev, thiab cua sov, thaum tseem ua rau nws cov kev daws teeb meem kom pom qhov txawv tsis yog-Newtonian kua cwj pwm. Tsis tas li ntawd, los ntawm kev kho cov hom thiab qhov sib piv ntawm ntau yam hlau ions siv, viscosity thiab rheological zog ntawm xanthan cov pos hniav tuaj yeem raug kho kom tau raws li cov kev cai tshwj xeeb ntawm cov khoom lag luam sib txawv.
Ntxiv rau lub hauv paus polysaccharide chains thiab carboxylate pawg, xanthan cov pos hniav kuj tseem muaj cov kab mob ntawm cov piam thaj, cov protein, lossis cov ntsev inorganic; Cov khoom me me no feem ntau yog los ntawm microbial fermentation lossis purification txheej txheem. Txawm hais tias tam sim no nyob rau hauv tsis tshua muaj concentrations, cov kab no tej zaum yuav, nyob rau hauv tej yam kev siv, me ntsis cuam tshuam lub viscosity los yog stability ntawm lub resulting tov.
