Cov ntsiab lus piav qhia ntawm cov tuab tuaj yeem tshawb xyuas los ntawm kev xav hauv qab no:
1. Cov ntsiab lus txhais thiab cov haujlwm tseem ceeb
Thickener (Lus Fickener) yog hom macromolecular cov khoom uas tuaj yeem yaj hauv dej thiab ua tus viscous lossis gel-zoo li kev daws los ntawm kev tswj dej. Nws cov tub ntxhais lub zog muaj xws li:
Ua kom cov viscosity ntawm lub system: Khaws cov kua hauv cov khaub ncaws tsis zoo thiab ruaj khov lossis emulsion xeev.
Gel tsim los yog kev txhim kho kev txhim kho: piv txwv, muab cov nplaum nplaum hauv cov zaub mov, lossis txhim kho cov tshuaj nplaum kom huv.
2. Kev faib tawm thiab qhov chaw
Raws li qhov, nws tuaj yeem faib ua ob pawg:
Natural thickeners: such as starch, gum arabic, agar, etc., mainly extracted from plants or seaweed.
Synthetic thickeners: xws li sodium carboxymethyl cellulose, sodium polyacrylate, thiab lwm yam los ntawm tshuaj polymnerization.
3. Cov chaw thov
Thickeners ua si lub luag haujlwm tseem ceeb hauv ntau qhov kev lag luam:
Kev lag luam khoom noj: siv hauv cov kua ntses, mis nyuj khov, thiab lwm yam kom txhim kho saj thiab ruaj khov. Cov khoom siv muaj tshuaj lom zem txhua hnub: xws li zawv plaub hau thiab xab nphoo kom kho viscosity thiab txhim kho kom huv.
Tshuaj thiab cov tshuaj tiv thaiv: raws li cov neeg sawv cev lossis cov yeeb yaj kiab ua yeeb yam.
4. Lwm cov lus thiab npe menyuam yaus
Thickeners tseem hu ua cov neeg sawv cev, cov khoom noj zoo nkauj lossis hydrophilic colloids nyob rau hauv cov xwm txheej sib txawv, qhov siab molecular hnyav hydroughilic yam ntxwv.