Qhov sib txawv tseem ceeb ntawm kev ziab thiab lub cev qhuav dej yog qhov ziab yog hais txog kev tshem tawm cov kuab tshuaj los ntawm cov khoom, ib nrab lossis cov kua uas lub cev qhuav dej yog hais txog kev tshem tawm cov dej los ntawm cov dej sib xyaw.
Ob nqe lus kom qhuav thiab lub cev qhuav dej yog hais txog kev tshem tawm cov kuab tshuaj los ntawm cov tshuaj, yog li tawm tsuas yog cov kua. Yog li ntawd, ob qhov txheej txheem no yog cov txheej txheem hloov loj. Ntxiv mus, cov txheej txheem no yuav tso cov khoom seem ntawm qhov kawg.
Drying yog dab tsi?
Kev ziab yog txheej txheem ntawm kev tshem tawm cov kuab tshuaj los ntawm cov khoom, semi-kua lossis kua. Li no, nws yog txheej txheem hloov loj vim tias qhov hnyav hnyav hauv cov tshuaj txav los ntawm cov tshuaj mus rau qhov chaw los ntawm kev ziab. Ntawm no, qhov hnyav tuaj yeem yog dej lossis lwm yam hnyav xws li cov kuab tshuaj organic. Tsis tas li ntawd, qhov kev hloov loj no tshwm sim ntawm evaporation. Feem ntau, peb siv cov txheej txheem no ua cov kauj ruam kawg ua ntej kev ntim khoom ntawm qee yam khoom. Cov khoom kawg ntawm cov txheej txheem ziab yog ib txwm muaj zog. Nws tuaj yeem ua rau hauv daim ntawv txuas ntxiv, hauv daim ntawv ntev, hais los yog ua hmoov.
Feem ntau, peb siv lub zog hluav taws xob rau cov evaporation thiab kom qhuav, peb xav tau tus neeg sawv cev uas tuaj yeem tshem tawm cov kuab tshuaj vapor uas ua los ntawm cov evaporation. Desiccation, ntawm qhov tod tes, yog lub ntsiab lus rau kev ziab, tab sis qee zaum peb xav tias nws yog qhov ziab qhuav heev.
Daim duab 01: Ntses ziab hauv Sri Lanka
Qee txoj kev uas peb siv kom qhuav yog raws li hauv qab no:
- Daim ntawv cua kub
- Indirect los yog hu rau ziab (g., nruas ziab, nqus kom qhuav)
- YDielectric drying (g., microwaves)
- Nyob qhuav qhuav
- Supercritical drying
- Siv huab cua
Ntxiv mus, kev siv cov txheej txheem ziab yog nyob rau hauv kev lag luam khoom noj, kev lag luam tshuaj, thiab lwm yam. peb tuaj yeem qhuav cov khoom noj kom tsis txhob muaj kab mob microbial loj hlob thiab yog li khaws cov zaub mov. Tsis tas li ntawd, nws kuj txo qhov ntim thiab qhov loj ntawm cov khoom. Ntxiv rau qhov ntawd, peb qhuav cov khoom tsis yog khoom noj xws li ntoo, ntawv, ntxhua khaub ncaws, thiab lwm yam.
Lub cev qhuav dej yog dab tsi?
Lub cev qhuav dej yog tshem tawm cov dej ntawm cov dej uas muaj cov khoom sib xyaw. Qhov kev sib xyaw no tuaj yeem ua cov kua dej aqueous, khoom, thiab lwm yam. Thaum kawg ntawm lub cev qhuav dej, cov ntaub ntawv dej ua ib qho khoom tseem ceeb. Cov khoom kawg ntawm cov txheej txheem yog ib txwm muaj zog. Ntxiv mus, tsis zoo li cov txheej txheem ziab, peb siv cov txheej txheem tshwj xeeb nrog kev tswj qhov kub thiab txias. Hauv qhov sib piv, hydration yog qhov sib ntxiv ntawm cov dej molecules rau ib qho chaw.
Qhov txawv ntawm qhov ziab thiab lub cev qhuav dej yog dab tsi?
Kev ziab yog txheej txheem ntawm kev tshem tawm cov kuab tshuaj los ntawm cov khoom, ib nrab lossis cov kua uas lub cev qhuav dej yog tshem tawm cov dej los ntawm cov dej sib xyaw. Yog li, qhov no yog qhov sib txawv ntawm qhov ziab thiab lub cev qhuav dej. Lwm qhov sib txawv tseem ceeb ntawm kev ziab thiab lub cev qhuav dej yog cov txheej txheem ziab kom qhuav ua dej los yog lwm yam kuab tshuaj raws li cov khoom siv thaum lub cev qhuav dej ua dej ua ib qho tseem ceeb byproduct. Tsis tas li ntawd, peb tuaj yeem siv cov mob me me yam tsis muaj kev tswj xyuas kom qhuav. Tab sis peb yuav tsum tswj cov xwm txheej xws li av noo thiab qhov kub thiab txias rau lub hom phiaj lub cev qhuav dej.
Cov ntawv qhia hauv qab no nthuav qhia tag nrho cov ntsiab lus ntawm qhov sib txawv ntawm kev ziab thiab lub cev qhuav dej hauv daim ntawv teev npe.
Summary – Qhuav vs Dehydration
Ob qho tib si ziab thiab lub cev qhuav dej yog cov txheej txheem hloov loj. Lawv koom nrog hauv kev tshem tawm cov kuab tshuaj los ntawm ib qho chaw. Lawv txawv ntawm ib leeg raws li "dab tsi" lawv yuav tshem tawm. Yog li, qhov sib txawv tseem ceeb ntawm kev ziab thiab lub cev qhuav dej yog qhov ziab yog hais txog kev tshem tawm cov kuab tshuaj los ntawm cov khoom, ib nrab lossis cov kua uas lub cev qhuav dej yog hais txog kev tshem tawm cov dej los ntawm cov dej sib xyaw.
