Khoom Taw Qhia
Raws li txoj cai, qhov ntau dua qhov sib piv ntawm cov kuab tshuaj rau cov khoom siv, qhov ntau dua qhov subcritical extraction efficiency. Hauv cov txheej txheem kev tsim khoom, tus nqi feem ntau tswj tau ntawm 1:1-1.5:1. Cov txheej txheem subcritical extraction yog txheej txheem ntawm cov txheeb ze diffusion ntawm molecules. Kev nplawm nruab nrab tuaj yeem ua rau kom muaj kev sib xyaw ua ke ntawm cov kuab tshuaj thiab cov khoom siv, txo qhov kev tawm tsam sab nraud thaum lub sij hawm rho tawm, thiab ua kom cov concentration ntawm cov extraction system diffuse nyob rau hauv cov kev taw qhia ntawm cov kuab tshuaj uas yog conducive mus rau lub diffusion ntawm fat-soluble Cheebtsam nyob rau hauv lub extraction. cov khoom siv rau hauv cov kua.
Ua kom cov extraction kub yuav ua rau kom lub zog ceev ntawm molecules, yog li ua kom lub diffusion ceev, tab sis kub heev yuav ua rau inactivation ntawm cov active khoom xyaw. Yog li ntawd, qhov kub thiab txias yuav tsum tau tswj nyob rau hauv ib tug tej yam kub thiab muaj peev xwm tswj arbitrarily thaum lub sij hawm ntau lawm txheej txheem. Muaj kev sib raug zoo ntawm excitation thiab kub, thiab lub subcritical extraction siab nce nrog qhov nce ntawm extraction kub.
Qhov siab dua, qhov kev tshem tawm sai dua. Raws li cov ntaub ntawv sib txawv, cov sijhawm tsim nyog thiab lub sijhawm tau txais los ntawm kev sim orthogonal. Nyob rau hauv cov txheej txheem ntau lawm, cov extraction efficiency yog txhim kho los ntawm cov countercurrent extraction txheej txheem ntawm pawg tank. Hnub nyob rau hauv kev siv subcritical kua extraction.
vim li cas xaiv peb
Txawm li cas los xij, thaum lub sij hawm tus txheej txheem ntawm extracting active cov khoom xyaw los ntawm cov tsiaj thiab cov nroj tsuag, cov nyhuv cavitation ntawm ultrasonic tsis txo cov sab nraud diffusion tsis kam ntawm extraction thiab shortens lub sij hawm extraction, yog li txhim kho extraction efficiency, nce cov zis sib xws, thiab txo cov nqi. Xyaum qhia tau hais tias qhia txog kev siv tshuab ultrasonic pab hauv subcritical extraction muaj txiaj ntsig zoo.
Subcritical kua extractionthev naus laus zis yog ua raws cov khoom tshwj xeeb ntawm cov kua dej subcritical thiab lub hauv paus ntsiab lus ntawm kev sib raug zoo ntawm cov organic teeb meem. Cov khoom yog muab tso rau hauv lub tank extraction, thiab cov kuab tshuaj subcritical yog txhaj rau countercurrent extraction.Subcritical extraction khoommuaj ntau yam kev siv.
1. Daim ntawv thov hauv kev tsim cov roj muaj txiaj ntsig thiab cov rog
Kev tsim khoom noj khoom haus yog siv n-hexane extraction txheej txheem. n-hexane yog desolvated ntawm qhov kub thiab txias, thiab ntau yam khoom xyaw tseem ceeb hauv cov roj zaub raug rhuav tshem los ntawm tshav kub. Daim ntawv thov ntawm subcritical butane extraction txheej txheem tsis tsuas yog xyuas kom meej tias lub tshav kub-sensitive Cheebtsam nyob rau hauv lub extracted roj tsis puas, tab sis kuj xyuas kom meej tias cov nroj tsuag nyob rau hauv cov zaub mov.
Kev ruaj ntseg ntawm cov khoom xyaw xws li cov protein thiab cov protein siv tag nrho cov nqi ntawm cov khoom.
2. Daim ntawv thov nyob rau hauv extraction thiab zus tau tej cov pigments cog.
Kev lig kev cai, cov nroj tsuag muaj roj-soluble pigments yog muab rho tawm nrog hexane hnyav, thiab dej-soluble pigments yog muab rho tawm nrog dej los yog ethanol, ob qho tib si yuav tsum tau cua sov thiab desolvation, uas cuam tshuam rau cov khoom zoo. Subcritical extraction ntawm propane, butane, dimethyl ether thiab lawv cov kuab tshuaj sib xyaw muaj txiaj ntsig zoo. Piv txwv li, nyob rau hauv zus tau tej cov marigold lutein, ntau tshaj li ib lub kaum ossubcritical extraction khoomcov kab ntau lawm tau muab tso rau hauv ntau lawm.
3. Daim ntawv thov hauv kev rho tawm thiab tsim cov roj yam tseem ceeb
Cov khoom ntawm cov nroj tsuag tseem ceeb roj yog feem ntau fat-soluble compounds. Cov paj tshiab thiab noo noo, stems thiab nplooj tuaj yeem muab rho tawm subcritically nrog butane thiab propane kom tau txais kev rho tawm. Tam sim no, cov ntaub ntawv uas tau raug industrialized thiab loj tsim muaj xws li Rose, zaub rosemary, agarwood, sandalwood, thuja, thiab lwm yam.
Daim ntawv thov nyob rau hauv zus tau tej cov nroj tsuag tsw extracts
Extract cov roj yam tseem ceeb, oleoresins, cov roj tseem ceeb ntawm cov txuj lom, xws li peppercorns, kua txob, cinnamon, cinnamon, cloves, fennel thiab fat-soluble Cheebtsam ntawm compound spices.
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