Cov zaub thiab txiv hmab txiv ntoo blanching tshuab tuaj yeem ua rau cov enzymes nquag thiab tiv thaiv cov enzyme los ntawm browning.Tom qab cov txiv hmab txiv ntoo thiab zaub yog rhuab, oxidases yuav passivated, thiaj li yuav tsum tsis txhob ua rau lawv tus kheej biochemical kev ua ub no, thiab tiv thaiv kom tsis txhob mus ntxiv deterioration ntawm zoo, uas yog tshwj xeeb tshaj yog zoo. Ib qho tseem ceeb hauv cov khoom khov thiab qhuav qhuav.Nws feem ntau ntseeg tias cov thermoresistant oxidoreductases tuaj yeem nyob ntawm 71 ~ 73℃.Ntawm 5 degrees Celsius, deoxidase tuaj yeem poob nws cov haujlwm ntawm 80-95℃.Yog li cov zaub thiab txiv hmab txiv ntoo blanching tshuab kub tuaj yeem kho tau 65-98℃.
Snquag los yog txhim kho cov ntaub so ntswgyog lwm txoj haujlwm ntawm cov txiv hmab txiv ntoo thiab zaub blanching tshuab.Tom qab lub ntim ntawm cov txiv hmab txiv ntoo thiab zaub yog me ntsis txo, cov ntaub so ntswg, hloov tau yooj yim, lub tank, yooj yim rau tank.Tam sim no, vim yog ib feem ntawm lub cev qhuav dej,zaub thiab txiv hmab txiv ntooyooj yim los xyuas kom meej cov ntsiab lus txaus, qhuav thiab qab zib ua vim yog permeability ntawm cell membrane, dej yog ib qho yooj yim rau evaporate, qab zib permeability, tsis yooj yim rau tawg thiab wrinkle, tshwj xeeb tshaj yog thaum qhuav nrog alkali kub yaug ntau pom tseeb.Cov khoom kub qhuav kuj yooj yim rau hydrate.
Srooj los yog txhim khozaub thiab txiv hmab txiv ntooximYog peb txoj haujlwm ntawm zaub thiab txiv hmab txiv ntoo blanching tshuab.Vim muaj huab cua paug, cov khoom hauv kaus poom los tswj lub tshuab nqus tsev tsim nyog;rau cov txiv hmab txiv ntoo thiab zaub uas muaj chlorophyll, cov xim yog ntsuab ntau, txiv hmab txiv ntoo thiab zaub tsis muaj chlorophyll ua lub npe hu ua translucent,lawv uazoo nkauj dua.
Qhov plaubmuaj nuj nqiyog tsuas yog los txhim kho saj ntawm lubzaub thiab txiv hmab txiv ntoo los ntawmtshem tawmhauvqee qhov ntsim tsw thiab lwm yam tsis zoo.Rau iab, ntsim los yog lwm yam tsw hnyav tsw txiv hmab txiv ntoo thiab zaub raw cov ntaub ntawvsuch li kua txob, eggplant, dos, iab gourd thiab hais txog,, tom qab kev kho ironing tuaj yeem txo qis, qee zaum kuj tuaj yeem tshem tawm ib feem ntawm cov khoom nplaum,thiab txhim khoqhov zoo ntawm cov khoom.
Qhov zoo tshaj plaws ua haujlwmntawm zaub blanching tshuabyog qhov txo cov pa phem thiab cov kab mob hauv cov txiv hmab txiv ntoo thiab zaub.Cov txiv hmab txiv ntoo thiab zaub raw cov ntaub ntawv nyob rau hauv lub tev, txiav los yog lwm yam pretreatment txheej txheem yog inevitably kis kab mob microorganisms, tom qab kub bleaching yuav tua ib co kab mob, txo cov pa phem ntawm raw cov ntaub ntawv. , uas yog ib qho tseem ceeb tshwj xeeb rau cov khoom khov ceev ceev.
Post lub sij hawm: Mar-25-2022