Supercritical CO2 thev naus laus zis yog ib txoj hauv kev rau kev rho tawm, sib cais, ua kom huv, thiab cov ntaub ntawv crystallizing uas ua rau muaj txiaj ntsig ntawm cov khoom sib cais tshwj xeeb ntawm CO2 ze rau nws qhov tseem ceeb. Raws li cov txheej txheem tshuaj cais tawm,supercritical CO2 rho tawmthiab purification thev naus laus zis nthuav tawm qhov zoo sib txawv hauv kev sib cais cov khoom nrog qhov hnyav molecular, cov ntsiab lus kub kub, thiab kev kub siab-kev nyuaj siab feem ntau ntsib los ntawm cov txheej txheem sib cais. Lub tshuab no pom cov ntawv thov dav dav hauv kev rho tawm cov khoom xyaw zoo los ntawm cov nroj tsuag ntuj, qhia txog kev cia siab.
Cog active cov khoom xyaw, ua ib tug tauj dua tshiab natural resource, muaj complex compositions thiab tsis tshua muaj active ingredient cov ntsiab lus. Vim muaj kev hloov pauv hauv cov qauv thiab cov khoom siv, cov txheej txheem rho tawm thiab txhais tau tias rau cov khoom xyaw nquag kuj sib txawv. Feem ntau siv cov kuab tshuaj rho tawm muaj xws li dej thiab cov kuab tshuaj organic, nrog cov kuab tshuaj organic xws li methanol, ethanol, thiab acetone nquag ua haujlwm. Thaum siv CO2 los rho tawm cov khoom xyaw ntuj cog qoob loo, xws li cov txuj lom lossis cov xim, siv rau hauv cov khoom noj khoom haus thiab cov khoom siv ntxiv, cov yam ntxwv ntawm cov aroma qub lossis xim tuaj yeem khaws cia. Tsis tas li ntawd, cov khoom tsim tawm yuav tsis muaj cov organic solvent residue, txhim kho tag nrho cov khoom zoo.
Cog cov khoom xyaw ua haujlwm ua ntau yam khoom siv rau kev lag luam tshuaj, kev lag luam zaub mov, kev lag luam tshuaj pleev ib ce, luam ntawv thiab dyeing kev lag luam, thiab lwm yam. Supercritical CO2 extraction, sib cais, thiab purification thev naus laus zis ua lub luag haujlwm tseem ceeb hauv tshuaj, zaub mov, tshuaj pleev ib ce, thiab cov khoom xa tawm.