Xanthan Gum Food Grade

Xanthan cov pos hniavtseem hu ua xanthan gum, yog ib qho microbial extracellular compound tsim los ntawm Xanthomnas campestris nrog carbohydrates raws li cov khoom tseem ceeb (xws li pob kws hmoov txhuv nplej siab) los ntawm fermentation engineering. polysaccharides. Nws muaj qhov tshwj xeeb rheology, dej solubility zoo, ruaj khov rau cua sov thiab acid thiab alkali, thiab zoo sib xws nrog ntau yam ntsev. Nws tuaj yeem siv dav ua cov thickener, suspending agent, emulsifier, thiab stabilizer. Siv nyob rau hauv ntau tshaj 20 industries xws li zaub mov, roj av, thiab tshuaj, nws yog microbial polysaccharide nrog lub loj tshaj plaws ntau lawm teev thiab ntau yam kev siv nyob rau hauv lub ntiaj teb no.

1. Suspending thiab emulsifying
Xanthan cov pos hniav muaj qhov cuam tshuam zoo ntawm cov khoom tsis sib haum thiab cov roj tee. Xanthan gum sol molecules tuaj yeem tsim super-bonded ribbon-zoo li tus helical copolymers los tsim cov kua nplaum zoo li lub network tsis yooj yim, yog li lawv tuaj yeem txhawb nqa cov duab ntawm cov khoom, cov kua dej thiab cov pa npuas, uas qhia tau tias muaj zog emulsification stability thiab muaj peev xwm ncua kev kawm siab.
2. Thickening
Xanthan cov pos hniav muaj cov yam ntxwv ntawm qis concentration thiab siab viscosity (qhov viscosity ntawm 1% aqueous tov yog sib npaug rau 100 npaug ntawm cov gelatin), thiab yog cov thickener zoo.
3. Thermal stability
Lub viscosity ntawm xanthan cov pos hniav yuav tsis hloov zoo heev nrog kev hloov ntawm qhov kub thiab txias. Lub viscosity ntawm cov polysaccharides dav dav yuav hloov vim cua sov, tab sis cov viscosity ntawm xanthan cov pos hniav yuav tsis tshua hloov ntawm 10-80 degree, txawm nyob rau hauv tsawg concentrations. Cov tshuaj aqueous tseem qhia tau tias ruaj khov siab viscosity nyob rau hauv qhov kub thiab txias. 1% xanthan pos hniav tov (muaj 1% poov tshuaj chloride) tau rhuab ntawm 25 degree mus rau 120 degree. Nws viscosity tsuas yog txo los ntawm 3%.
4. Kev ruaj ntseg rau cov kua qaub thiab alkali
Xanthan cov pos hniav yog ruaj khov rau cov kua qaub thiab alkali, nws cov viscosity tsis cuam tshuam thaum pH nyob nruab nrab ntawm 5-10, thiab cov viscosity hloov me ntsis thaum pH tsawg dua 4 thiab siab dua 11. Nyob rau hauv qhov ntau ntawm PH { {3}}, qhov sib txawv ntawm qhov siab tshaj plaws thiab qhov tsawg kawg nkaus viscosity tsawg dua 10%. Xanthan cov pos hniav tuaj yeem yaj hauv ntau cov kua qaub, xws li 5% sulfuric acid, 5% nitric acid, 5% acetic acid, 10% hydrochloric acid thiab 25% phosphoric acid, thiab cov xanthan cov pos hniav cov kua qaub no ruaj khov heev ntawm chav tsev kub. Qhov zoo ntawm cov khoom tsis tau hloov ntau lub hlis. Xanthan cov pos hniav kuj soluble nyob rau hauv sodium hydroxide tov thiab muaj thickening zog. Qhov kev daws teeb meem yog qhov ruaj khov heev ntawm chav tsev kub. Xanthan cov pos hniav tuaj yeem degraded los ntawm cov oxidants muaj zog, xws li perchloric acid thiab persulfuric acid, thiab cov degradation yog ceev raws li qhov kub thiab txias.

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