Dab tsi yog xanthan ntawm cov pos hniav
Mar 17, 2021
Xanthan ntawm cov pos hniav yog ib qho tso tawm ntxiv acidic heteropolysaccharide uas ua los ntawm Xanthomonas. D-glucose, D-mannose thiab D-glucuronic acid yog siab cov tshuaj tiv thaiv qhov hnyav hnyav uas muaj qhov sib piv ntawm 2: 2: 1. Tus txheej txheem thib ob ntawm xanthan ntawm cov pos hniav yog tias sab saw yog thim rov qab lub qhov txhab ntawm caj qaum ntawm txoj saw tseem ceeb, thiab tus pas nrig zoo li ob chav helix qauv yog tsim los ntawm hydrogen ua ke.
Xanthan ntawm cov pos hniav yog lub teeb daj mus rau dawb flowable hmoov nrog qhov tsw ntxhiab tsw. Nws yog soluble hauv dej txias thiab dej kub, nruab nrab, tiv taus kom khov thiab yaj, insoluble hauv ethanol. Thaum nws ntsib nrog dej, nws disperses thiab emulsifies mus rau qhov ruaj khov hydrophilic viscous colloid.
Tus nqi ntawm pyruvate pab pawg qhov kawg ntawm molecular sab saw ntawm xanthan ntawm cov pos hniav muaj qhov cuam tshuam zoo ntawm nws lub zog. Xanthan ntawm cov pos hniav muaj cov yam ntxwv ntawm cov saw ntev polymer, tab sis nws muaj cov pab pawg ntau dua li cov polymer ua, thiab pom cov yam ntxwv tshwj xeeb hauv cov kev mob tshwj xeeb. Nws cov lus nyob rau hauv cov kua dej aqueous yog ntau yam thiab qhia cov yam ntxwv sib txawv hauv cov xwm txheej sib txawv.
