Cov yam tseem ceeb uas cuam tshuam rau kev ua haujlwm ntawm cov tshuaj preservatives rau kev pleev kom zoo nkauj yog dab tsi?

Cov tshuaj tiv thaivyog cov tshuaj uas tiv thaiv kev loj hlob ntawm cov kab mob me me hauv cov khoom lossis tiv thaiv kev loj hlob ntawm cov kab mob me me uas cuam tshuam nrog cov khoom. Cov tshuaj tiv thaiv tsis yog tsuas yog tiv thaiv kev ua haujlwm ntawm cov kab mob, pwm thiab poov xab, tab sis kuj cuam tshuam rau lawv txoj kev loj hlob thiab kev tsim tawm. Cov nyhuv tiv thaiv hauv cov mis yog cuam tshuam los ntawm ntau yam, xws li qhov kub ntawm ib puag ncig, PH ntawm cov mis, cov txheej txheem tsim khoom, thiab lwm yam. Yog li ntawd, kev nkag siab txog ntau yam tseem ceeb pab xaiv thiab siv ntau yam tshuaj tiv thaiv.
Cov yam uas cuam tshuam rau kev ua tau zoo ntawm cov tshuaj preservatives yog raws li nram no:
A. yam ntxwv ntawm cov tshuaj preservatives
Qhov xwm txheej ntawm cov tshuaj preservative nws tus kheej: kev siv cov tshuaj preservatives concentration thiab solubility ntawm ib qho kev cuam tshuam loj rau qhov ua tau zoo
1, Feem ntau, qhov siab dua qhov concentration, qhov zoo dua;
2, Cov tshuaj preservatives uas yaj tau hauv dej muaj kev ua tau zoo dua ntawm cov tshuaj preservatives: cov kab mob me me feem ntau nce ntxiv hauv cov dej theem ntawm lub cev emulsified, hauv lub cev emulsified, cov kab mob me me yuav raug adsorbed ntawm qhov sib txuas roj-dej lossis txav mus rau hauv cov dej theem.
Kev sib cuam tshuam nrog lwm cov khoom xyaw hauv cov mis: kev ua kom cov tshuaj preservatives tsis ua haujlwm los ntawm qee cov tshuaj.
B. Cov txheej txheem tsim khoom ntawm cov khoom
Qhov chaw tsim khoom; qhov kub ntawm cov txheej txheem tsim khoom; qhov kev txiav txim uas cov ntaub ntawv raug ntxiv
C. Khoom kawg
Cov ntsiab lus thiab cov ntim sab nraud ntawm cov khoom ncaj qha txiav txim siab qhov chaw nyob ntawm cov kab mob me me hauv cov tshuaj pleev ib ce. Cov yam ntxwv ib puag ncig lub cev suav nrog qhov kub thiab txias, ib puag ncigTus nqi pH, lub zog osmotic, hluav taws xob, lub zog static; Cov yam ntxwv tshuaj lom neeg suav nrog cov dej, cov as-ham (C, N, P, S), oxygen, thiab cov organic growth factors.
Yuav soj ntsuam qhov ua tau zoo ntawm cov tshuaj preservatives li cas?
Qhov tsawg kawg nkaus inhibitory concentration (MIC) yog qhov ntsuas tseem ceeb los ntsuas qhov cuam tshuam ntawm cov tshuaj preservatives. Tus nqi MIC tsawg dua, qhov cuam tshuam ntau dua.
Qhov MIC ntawm cov tshuaj preservatives tau txais los ntawm kev sim. Cov concentration sib txawv ntawm cov tshuaj preservatives tau ntxiv rau hauv cov kua nruab nrab los ntawm ntau txoj kev dilution, thiab tom qab ntawd cov kab mob me me tau txhaj tshuaj thiab cog qoob loo, qhov concentration inhibitory qis tshaj plaws (MIC) tau xaiv los ntawm kev soj ntsuam kev loj hlob ntawm cov kab mob me me.