Kev siv sodium carboxymethyl cellulose thiab hydroxyethyl cellulose hauv cov khoom siv tshuaj txhua hnub

Carboxymethylcellulose sodium (CMC-Na) yog cov khoom siv organic, carboxymethylated derivative ntawm cellulose, thiab cov pos hniav ionic cellulose tseem ceeb tshaj plaws. Sodium carboxymethyl cellulose feem ntau yog anionic polymer compound npaj los ntawm reacting natural cellulose nrog caustic alkali thiab monochloroacetic acid, nrog ib tug molecular hnyav li ntawm ntau txhiab mus rau lab. CMC-Na yog dawb fibrous los yog granular hmoov, tsis muaj ntxhiab, tasteless, hygroscopic, yooj yim rau disperse nyob rau hauv dej los tsim ib tug pob tshab colloidal tov.

Thaum nruab nrab lossis alkaline, cov tshuaj yog cov kua viscosity siab. Stable rau cov tshuaj, lub teeb thiab kub. Txawm li cas los xij, cov cua sov yog txwv rau 80°C, thiab yog tias cua sov rau ntev tshaj 80°C, viscosity yuav txo qis thiab nws yuav insoluble hauv dej.

Sodium carboxymethyl cellulose kuj yog ib hom thickener. Vim nws cov khoom ua haujlwm zoo, nws tau siv dav hauv kev lag luam khoom noj khoom haus, thiab nws kuj tau txhawb kev loj hlob sai thiab noj qab nyob zoo ntawm kev lag luam khoom noj rau qee yam. Piv txwv li, vim nws cov nyhuv thickening thiab emulsifying, nws tuaj yeem siv los tswj cov dej qab zib yogurt thiab ua kom cov viscosity ntawm yogurt system; vim nws muaj qee yam hydrophilicity thiab rehydration zog, nws tuaj yeem siv los txhim kho kev noj cov nplej zom xws li qhob cij thiab steamed qhob cij. zoo, ncua lub txee lub neej ntawm cov khoom pasta thiab txhim khu cov saj.

Vim tias nws muaj cov nyhuv gel, nws muaj txiaj ntsig zoo rau cov khoom noj los tsim cov gel zoo dua, yog li nws tuaj yeem siv los ua jelly thiab jam; Nws kuj tseem tuaj yeem siv los ua cov khoom siv edible, sib xyaw nrog lwm cov thickeners, thiab kis tau rau qee qhov chaw ntawm cov zaub mov, nws tuaj yeem khaws cov zaub mov tshiab kom zoo tshaj plaws, thiab vim tias nws yog cov khoom siv tau, nws yuav tsis ua rau muaj kev phom sij rau tib neeg. noj qab haus huv. Yog li ntawd, zaub mov-qib CMC-Na, raws li cov khoom noj khoom haus zoo tshaj plaws, yog siv dav hauv kev tsim khoom noj hauv kev lag luam khoom noj.

Hydroxyethylcellulose (HEC), chemical formula (C2H6O2)n, yog dawb los yog lub teeb daj, tsis muaj ntxhiab, tsis muaj tshuaj lom fibrous los yog hmoov khoom, muaj li ntawm alkaline cellulose thiab ethylene oxide (los yog chlorohydrin) Npaj los ntawm etherification cov tshuaj tiv thaiv, nws belongs rau non- ionic soluble cellulose ethers. Vim HEC muaj cov khoom zoo ntawm thickening, suspending, dispersing, emulsifying, khi, zaj duab xis tsim, tiv thaiv ya raws thiab muab kev tiv thaiv colloid.

Yooj yim soluble hauv dej ntawm 20°C. Insoluble nyob rau hauv cov organic solvents. Nws muaj cov haujlwm ntawm thickening, suspending, khi, emulsifying, dispersing, thiab tswj cov dej noo. Kev daws teeb meem hauv qhov sib txawv viscosity tuaj yeem npaj tau. Nws muaj qhov tshwj xeeb zoo ntsev solubility rau electrolytes.

Lub viscosity hloov me ntsis hauv thaj tsam ntawm PH tus nqi 2-12, tab sis lub viscosity txo qis tshaj qhov ntau. Nws muaj cov yam ntxwv ntawm thickening, suspending, khi, emulsifying, dispersing, tswj dej noo thiab tiv thaiv colloid. Kev daws teeb meem hauv qhov sib txawv viscosity tuaj yeem npaj tau.