Cov cawv hauv npias muaj qee yam cuam tshuam rau cov npuas dej thiab saj ntawm npias.Cov ntsiab lus cawv yog siab, npias viscosity thiab ua npuas ncauj viscosity kuj siab.Npias ua npuas ncauj tsis muaj cawv yog tsis ruaj tsis khov;lub wort ua npuas ncauj nrog hops tsis dai rau hauv lub khob, tab sis Tom qab ntxiv cawv, lub khob hangs obviously;lub npias uas tsis yog-alcoholic ua npuas ncauj me me, thiab thaum haus cawv ntxiv, cov foaming kev ua tau zoo thiab ua npuas ncauj ruaj khov yog txhim khu kev qha.Cov nyhuv ntawm cawv ntawm cov npuas dej tsuas yog nyob rau hauv ib qho chaw (1 ~ 3%).Tshaj qhov ntau yam no kuj ua rau ua npuas ncauj.Hauv lub tebchaws tus qauv, cov ntsiab lus cawv ntawm lub teeb npias yog ntau dua 3%, thiab cov ntsiab lus cawv ntawm npias tsis muaj cawv yog tsawg dua 0.5%.Cov ntsiab lus cawv ntawm npias kuj ua rau ua rau ua npuas ncauj, vim hais tias cov cawv ntawm qhov nro thiab lwm yam ua rau muaj kev cuam tshuam defoaming.
Tsis tas li ntawd, cawv kuj cuam tshuam rau kev sib cais ntawm CO2, cov khoom tseem ceeb uas tsim npias ua npuas ncauj, hauv npias.Qhov qis dua cov ntsiab lus cawv, qhov siab dua CO2 solubility;siab dua cov ntsiab lus cawv, qhov qis dua CO2 solubility;solubility ntawm CO2 nyob rau hauv dej cawv aqueous tov yog qis dua li nyob rau hauv dej, yog li cawv kuj yog ib qho tseem ceeb rau solubility ntawm CO2 nyob rau hauv npias.muaj feem cuam tshuam.
Yog tias cov ntsiab lus cawv ntau dhau, txawm hais tias nws yuav ua rau muaj kev cuam tshuam rau kev solubility ntawm npias CO2 thiab ua npuas ncauj, yog tias cov ntsiab lus cawv hauv npias tsawg dhau, npias yuav tsis saj thiab tsis qab, xws li qee cov cawv tsawg thiab tsis muaj cawv. - cawv beers.Qhov no yog vim muaj cov dej cawv tsawg.Feem ntau, npias nrog qib siab ntawm fermentation muaj cawv ntau dua 4%, thiab nws "mellowness" zoo dua.Yog li ntawd, cov ntsiab lus cawv tsis yog tsuas yog ib feem tseem ceeb ntawm npias, tab sis kuj yog ib qho tseem ceeb ntawm cov khoom tseem ceeb rau npias tsw thiab saj kev ncaj ncees.Nyob rau tib lub sijhawm, nws yog ib qho tsim nyog rau kev sib txuas ntawm qee cov ester aroma tshuaj hauv npias, xws li ethyl caproate, ethyl acetate, thiab lwm yam. Txawm hais tias cov ntsiab lus ntawm cov tshuaj no me me, lawv muaj kev cuam tshuam zoo rau cov tsw ntawm npias. .Tus nqi nruab nrab ntawm ester tsw yam ntxwv tuaj yeem ntxiv qee lub cev tsw rau npias.
Cov ntsiab lus cawv ntawm npias yog 3-4%.Qhov concentration no muaj cov nyhuv inhibiting kev loj hlob ntawm lwm yam kab mob.Qhov siab dua qhov concentration, cov nyhuv muaj zog dua, yog li cov kab mob feem ntau tsis tuaj yeem muaj sia nyob hauv npias.Yog li, cawv tuaj yeem ua rau npias nws tus kheej muaj qee yam tshuaj tua kab mob thiab tshuaj tua kab mob, kom npias muaj qee yam kev ruaj ntseg lom.
Cov txheej txheem fermentation ntawm npias feem ntau yog cawv fermentation.Txhawm rau kom muaj cov cawv cawv, nws yog ib qho tsim nyog los xyuas kom meej cov txheej txheem tsim nyog.Cov ntsiab lus cawv hauv npias feem ntau yog txiav txim siab los ntawm qhov txo cov piam thaj hauv thawj wort thiab qib ntawm fermentation, thaum ib qho tseem ceeb ntawm wort concentration thiab fermentation raws li txoj cai kuj txiav txim siab los ntawm fermentable qab zib thiab tsis tshua muaj molecular nitrogen cov ntsiab lus nyob rau hauv lub wort.Rationality ntawm cov khoom thiab cov khoom ntawm cov poov xab.
Cov ntsiab lus cawv ntawm npias yog ib qho ntawm cov cim tseem ceeb ntawm cov khoom kuaj npias.Txoj kev ntsuas yog siv lub raj mis ntom ntom uas tau teev tseg hauv GB4928 los ntsuas qhov ntom ntawm npias distillate ntawm 20 ℃, thiab tau txais cov ntsiab lus cawv los ntawm kev saib lub rooj.
Lub sij hawm xa tuaj: Plaub Hlis-04-2022