Tam sim no, feem ntau ntawm cov tshuajtshuaj khaws ciasiv hauv peb lub khw yog benzoic acid thiab nws cov ntsev ntsev, sorbic acid thiab nws cov ntsev ntsev, propionic acid thiab nws cov ntsev, p-hydroxybenzoic acid esters (nipagin ester), dehydroacetic acid thiab nws cov ntsev ntsev, sodium lactate, fumaric acid, thiab lwm yam.
1. Benzoic acid thiab nws cov ntsev ntsev
Benzoic acid thiab nws cov ntsev ntsev yog ib qho ntawm feem ntau sivtshuaj khaws cianyob rau hauv Tuam Tshoj txoj kev lag luam ua zaub mov, feem ntau yog siv los khaws cov khoom noj ua kua xws li dej haus (xws li dej qab zib, kua txiv hmab txiv ntoo, kua ntses, cov khoom noj kaus poom, cawv, thiab lwm yam).Benzoic acid yog lipophilic thiab yooj yim nkag mus rau hauv cov cell membrane thiab nkag mus rau hauv lub cev ntawm tes, yog li cuam tshuam nrog permeability ntawm cell membrane ntawm cov kab mob thiab inhibiting kev nqus ntawm amino acids los ntawm lub cell membrane.Lub benzoic acid molecule uas nkag mus rau hauv lub cev ntawm tes, ionizes cov khoom alkaline nyob rau hauv lub cell, thiab muaj peev xwm inhibit qhov kev ua ntawm lub cell ua pa enzyme system, thiab muaj ib tug muaj zog lub luag hauj lwm nyob rau hauv kev tiv thaiv ntawm acetyl coenzyme A condensation cov tshuaj tiv thaiv, thiaj li mus ua si ib preservative nyhuv ntawm cov khoom noj.
2 sorbic acid thiab nws cov ntsev ntsev
Sorbic acid (potassium sorbate) yog cov khoom siv ntau tshaj plaws thiab siv nyob rau ntau lub tebchaws.Sorbic acid yog unsaturated fatty acid, nws inhibition mechanism yog siv nws tus kheej ob daim ntawv cog lus thiab microbial hlwb nyob rau hauv lub enzyme ntawm sulfhydryl pab pawg neeg ua ke los tsim ib tug covalent daim ntawv cog lus, thiaj li hais tias nws poob kev ua si thiab rhuav tshem lub enzyme system.Tsis tas li ntawd, sorbic acid kuj tuaj yeem cuam tshuam nrog kev hloov pauv, xws li kev hloov pauv ntawm cov pa oxygen los ntawm cytochrome C, thiab kev ua haujlwm ntawm cell membrane zog hloov, inhibit qhov kev loj hlob ntawm cov kab mob, thiaj li ua tiav lub hom phiaj ntawm corrosion.
3 Propionic acid thiab nws cov ntsev
Propionic acid yog mono-acid, tsis muaj xim oily kua.Nws yog inhibit microbial synthesis ntawm β-alanine thiab cov nyhuv antibacterial.Propionic acid ntsev yog tsuas yog sodium propionate thiab calcium propionate, lawv muaj tib lub preservative mechanism, hloov mus rau propionic acid nyob rau hauv lub cev, monomeric propionic acid molecules tuaj yeem tsim lub siab osmotic siab sab nraum cov pwm hlwb, kom cov pwm cell lub cev qhuav dej, poob. ntawm kev yug me nyuam, thiab tseem tuaj yeem nkag mus rau hauv pwm cell phab ntsa, inhibit intracellular kev ua.
4 paraben esters (nipagin ester)
Paraben esters yog methyl paraben, ethyl paraben, propyl paraben, isopropyl paraben, butyl paraben, isobutyl paraben, heptyl paraben, lwm yam. , thiab tuaj yeem rhuav tshem cov qauv ntawm microbial cell membrane, thiaj li ua si lub luag haujlwm ntawm cov tshuaj tua kab mob.
5 Dehydroacetic acid thiab nws cov ntsev ntsev
Dehydroacetic acid, molecular mis C8H8O4 nws thiab nws cov sodium ntsev yog dawb los yog lub teeb daj crystalline hmoov, muaj zog antibacterial muaj peev xwm, tshwj xeeb tshaj yog muaj zog antibacterial muaj peev xwm ntawm pwm thiab poov xab.Nws yog ib qho acidic preservative thiab yeej tsis muaj txiaj ntsig rau cov khoom noj nruab nrab.Nws yog ruaj khov rau lub teeb thiab cua sov, degrades rau acetic acid nyob rau hauv aqueous tov, thiab yog non-toxic rau tib neeg lub cev.Nws yog ib qho dav-spectrum preservative thiab yog dav siv los khaws cov nqaij, ntses, zaub, txiv hmab txiv ntoo, dej haus, pastries, thiab lwm yam.
6 Sodium lactate
Cov kua dej tsis muaj xim lossis daj me ntsis, tsis muaj ntxhiab tsw, me ntsis ntsev thiab iab, miscible hauv dej, ethanol, glycerin.Qhov dav dav concentration yog 60% -80%, thiab qhov siab tshaj plaws siv txwv yog 30g / KG rau 60% concentration... Sodium lactate yog ib hom tshiab ntawm cov khoom noj thiab khaws cia, feem ntau siv rau cov nqaij thiab nqaij qaib cov khoom, uas muaj zog inhibitory nyhuv ntawm cov nqaij noj cov kab mob.Nws yog tsuas yog siv rau ci nqaij, nqaij npua, hnyuv ntxwm, nqaij qaib, os thiab nqaij qaib cov khoom thiab cov ntses thiab cov khoom brine.Daim ntawv qhia txog kev khaws cia tshiab hauv cov khoom noj nqaij: sodium lactate: 2%, sodium dehydroacetate 0.2%.
7 Dimethyl fumarate
Nws yog hom tshiab los tiv thaiv pwmkhaws ciauas tau tsim muaj zog hauv tsev thiab txawv teb chaws, uas tuaj yeem cuam tshuam ntau tshaj 30 hom pwm thiab cov poov xab, thiab nws cov kev ua haujlwm ntawm cov kab mob tsis cuam tshuam los ntawm pH tus nqi, nrog rau qhov zoo ntawm kev ua haujlwm siab thiab dav spectrum, kev nyab xeeb siab thiab tus nqi qis.Nws cov tshuaj tiv thaiv kab mob thiab tshuaj tua kab mob zoo tshaj plaws, nrog rau kev ua haujlwm lom neeg muaj zog.Nws muaj fumigant zog vim sublimation, yog li nws muaj ob lub luag hauj lwm ntawm kev sib cuag sterilization thiab fumigation sterilization.Tsawg toxicity, rau hauv tib neeg lub cev sai sai mus rau hauv ib txwm Cheebtsam ntawm tib neeg metabolism fumaric acid, daim ntawv thov ntawm zoo repeatability.
Post lub sij hawm: Apr-01-2022