Qhov sib txawv tseem ceeb ntawm CMC thiab Xanthan cov pos hniav yog tias cov kev daws teeb meem uas muaj CMC ruaj khov nyob rau hauv pH ntau ntawm 1-13, qhov kev daws teeb meem uas muaj xanthan cov pos hniav ruaj khov nyob rau hauv pH ntau ntawm 4-10.
Lub sij hawm CMC sawv cev rau carboxymethyl cellulose, uas yog cellulose derivative nrog carboxymethyl pawg uas tau khi rau qee pawg hydroxyl ntawm glucopyranose monomers, uas ua rau cov pob txha cellulose. Xanthan cov pos hniav yog hom polysaccharide uas muaj ntau yam kev lag luam, suav nrog nws siv los ua khoom noj khoom haus ntxiv.
CMC (Carboxymethyl Cellulose) yog dab tsi?
CMC sawv cev rau carboxymethyl cellulose thiab yog cellulose derivative nrog carboxymethyl pawg uas tau khi rau qee cov hydroxyl pawg ntawm glucopyranose monomers, uas ua rau cov pob txha cellulose.
Daim duab 01: Chav tsev ntawm CMC Polysaccharide
Feem ntau, peb siv cov tshuaj no hauv nws daim ntawv ntsev ntsev. Yog li ntawd, nws yog hu ua sodium carboxymethyl cellulose. Lub npe ntawm CMC hauv khw yog Tylose.
Peb tuaj yeem npaj CMC los ntawm alkali-catalyzed cov tshuaj tiv thaiv cellulose nrog chloroacetic acid. Cov pawg carboxyl ntawm cov tshuaj tiv thaiv sib xyaw yog cov polar, thiab lawv ua rau cov cellulose soluble thiab muaj tshuaj lom neeg. Thawj kauj ruam cov tshuaj tiv thaiv muab cov khoom sib xyaw, suav nrog txog 60% CMC thiab txog 40% ntawm cov slats, xws li sodium chloride thiab sodium glycolate. Nws kuj muab CMC uas peb tuaj yeem siv rau hauv cov tshuaj ntxuav tes. Tom qab ntawd, yuav tsum tau ua kom huv ntxiv kom tau CMC ntshiab los ntawm qhov sib xyaw no.
CMC muaj txiaj ntsig hauv kev lag luam khoom noj raws li E tus lej E466 (qee zaum nws yog E469). Hauv kev lag luam khoom noj, nws kuj yog siv los ua ib qho kev hloov kho rau viscosity lossis ua cov thickener. Cov chaw tsim khoom noj khoom haus kuj siv nws kom ruaj khov emulsions hauv cov khoom noj xws li ice cream. Ntxiv mus, CMC yog cov khoom muaj nyob rau hauv cov neeg siv khoom sib txawv xws li tshuaj txhuam hniav, tshuaj laxatives, tshuaj noj, tshuaj pleev xim dej, tshuaj ntxuav tes, textile sizing, thiab lwm yam.
Xanthan Gum yog dab tsi?
Xanthan cov pos hniav yog hom polysaccharide uas muaj ntau yam kev lag luam, suav nrog nws siv los ua khoom noj khoom haus. Cov tshuaj no yog ib qho tseem ceeb raws li ib tug zoo thickening neeg sawv cev, emulsifier, thiab stabilizer. Yog li ntawd, nws yog ib qho tseem ceeb los tiv thaiv kev sib cais ntawm cov khoom xyaw hauv cov zaub mov. Hauv lwm lo lus, nws ua cov kua nplaum kom cov khoom xyaw ua ke.
Peb tuaj yeem tsim xanthan cov pos hniav los ntawm cov suab thaj yooj yim xws li qabzib thiab sucrose hauv cov txheej txheem fermentation. Lub npe ntawm cov tshuaj no yog los ntawm nws txoj kev npaj, uas peb siv hom kab mob Xanthomonas campestris. Polysaccharide nruab nrab rau cov kab mob uas siv nyob rau hauv no fermentation yog ib tug ua ke ntawm sterile aqueous tov ntawm carbohydrates thiab ib qhov chaw ntawm nitrogen nrog rau dipotassium phosphate thiab lwm yam kab kawm.
Daim duab 02: Cov Khoom Siv Hluav Taws Xob ntawm Cov Khoom Siv Hluav Taws Xob ntawm Xanthan Gum
Thaum xav txog kev siv cov pos hniav xanthan, 1% cov pos hniav tuaj yeem tsim cov viscosity ntau ntxiv hauv cov kua. Hauv cov khoom noj, qhov sib xyaw no feem ntau siv rau hauv cov khaub ncaws hnav thiab cov kua ntses uas nws pab tiv thaiv cov roj sib cais los ntawm kev ruaj khov ntawm emulsion, tab sis nws tsis suav tias yog emulsifier. Tsis tas li ntawd, xanthan cov pos hniav tuaj yeem pab tshem tawm cov khoom, nrog rau cov txuj lom. Tsis tas li ntawd, xanthan cov pos hniav pab tsim cov kev xav zoo nkauj hauv ntau cov ice cream ib yam nkaus. Feem ntau, cov tshuaj txhuam hniav muaj xanthan cov pos hniav ua cov binder kom cov khoom sib xws.
Qhov txawv ntawm CMC thiab Xanthan Gum yog dab tsi?
CMC thiab xanthan cov pos hniav yog cov polysaccharides tseem ceeb. Qhov sib txawv tseem ceeb ntawm CMC thiab Xanthan cov pos hniav yog cov kev daws teeb meem uas muaj CMC ruaj khov nyob rau hauv pH ntau ntawm 1-13 whereas kev daws teeb meem uas muaj xanthan cov pos hniav yog ruaj khov nyob rau hauv pH ntau ntawm 4-10.
Cov hauv qab no qhia txog qhov sib txawv ntawm CMC thiab Xanthan cov pos hniav hauv daim ntawv teev npe rau kev sib piv ntawm ib sab.
Summary – CMC vs Xanthan Gum
CMC lossis carboxymethyl cellulose yog cellulose derivative nrog carboxymethyl pawg uas tau khi rau qee pawg hydroxyl ntawm glucopyranose monomers. Xanthan cov pos hniav, ntawm qhov tod tes, yog ib hom polysaccharide nrog ntau yam kev siv. Qhov sib txawv tseem ceeb ntawm CMC thiab Xanthan cov pos hniav yog cov kev daws teeb meem uas muaj CMC ruaj khov nyob rau hauv pH ntau ntawm 1-13, qhov kev daws teeb meem uas muaj xanthan cov pos hniav ruaj khov nyob rau hauv pH ntau ntawm 4-10.
