Kev tsim qauv ntawm cov khoom siv pleev ib cetshuaj tiv thaivLub kaw lus yuav tsum ua raws li cov ntsiab cai ntawm kev nyab xeeb, kev ua haujlwm zoo, kev sib raug zoo thiab kev sib haum xeeb nrog lwm cov khoom xyaw hauv cov mis. Tib lub sijhawm, cov tshuaj tiv thaiv tsim yuav tsum sim ua kom tau raws li cov kev cai hauv qab no:
① Kev ua haujlwm tiv thaiv kab mob dav dav;
② Kev sib raug zoo;
③Kev ruaj ntseg zoo:
④Kev yaj dej zoo;
⑤Kev ruaj khov zoo;
⑥Nyob rau hauv kev siv concentration, nws yuav tsum tsis muaj xim, tsis muaj ntxhiab thiab tsis muaj saj;
⑦Tus nqi qis.
Kev tsim qauv ntawm lub kaw lus tiv thaiv xeb tuaj yeem ua tiav raws li cov kauj ruam hauv qab no:
(1) Kev tshuaj xyuas cov hom tshuaj preservatives siv
(2) Kev sib xyaw ua ke ntawm cov tshuaj preservatives
(3) Kev Tsim Qauv ntawmtshuaj tiv thaiv-qhov system pub dawb
Cov tshuaj tiv thaiv zoo tshaj plaws yuav tsum tiv thaiv txhua yam kab mob me me, suav nrog cov kab mob fungi (cov poov xab, pwm), cov kab mob gram-positive thiab negative. Feem ntau, feem ntau cov tshuaj tiv thaiv zoo tiv thaiv cov kab mob lossis cov kab mob fungi, tab sis tsis tshua muaj peev xwm tiv thaiv ob qho tib si. Yog li ntawd, qhov xav tau kev ua haujlwm dav dav tsis tshua muaj los ntawm kev siv ib qho tshuaj tiv thaiv. Kev siv cov tshuaj tiv thaiv qis tuaj yeem ua tau zoo thiab yuav tsum ua kom cov kab mob me me tsis ua haujlwm sai, txaus kom tiv thaiv cov teebmeem tiv thaiv ntawm cov kab mob me me ntawm lub kaw lus tiv thaiv. Nws kuj txo qhov kev pheej hmoo ntawm kev khaus thiab lom. Cov tshuaj tiv thaiv yuav tsum ruaj khov ntawm txhua qhov kub thiab pH thaum lub sijhawm tsim cov tshuaj pleev ib ce thiab thaum lub sijhawm khaws cia, tswj lawv cov haujlwm tiv thaiv kab mob. Qhov tseeb, tsis muaj cov organic compound ruaj khov ntawm qhov kub siab, lossis ntawm pH siab heev. Nws tsuas yog ua tau kom ruaj khov hauv qee qhov ntau.
Nrog kev tshawb fawb tob txog kev nyab xeeb ntawm cov tshuaj preservatives, ntau cov tshuaj preservatives ib txwm muaj tau ua pov thawj tias muaj qee yam tsis zoo; feem ntau ntawm cov tshuaj preservatives muaj cov teebmeem khaus, thiab lwm yam. Yog li, lub tswv yim ntawm kev nyab xeeb "tsis ntxiv"tshuaj tiv thaivcov khoom pib tshwm sim. Tab sis cov khoom tsis muaj tshuaj tiv thaiv tiag tiag tsis lav lub sijhawm khaws cia, yog li lawv tseem tsis tau nrov tag nrho. Muaj qhov tsis sib xws ntawm kev khaus thiab lub sijhawm khaws cia, yog li yuav daws qhov kev tsis sib haum xeeb no li cas? Qee lub tuam txhab paub zoo tau kawm txog qee cov tshuaj uas tsis suav nrog hauv cov koob tshuaj tiv thaiv, thiab tshuaj xyuas qee cov cawv uas muaj kev ua haujlwm tiv thaiv, xws li Hexanediol, Pentanediol, P-hydroxyacetophenone (CAS No. 70161-44-3), Ethylhexylglycerin (CAS No.70445-33-9),CHA Caprylhydroxamic Acid ( CAS No. 7377-03-9) thiab lwm yam, thaum cov tshuaj no siv rau hauv cov khoom kom raug, tuaj yeem ua tiav cov txiaj ntsig zoo ntawm kev khaws cia thiab dhau qhov kev xeem tiv thaiv kev sib tw.
Lub sijhawm tshaj tawm: Lub Peb Hlis-02-2022