Qhov Kev Ua Mechanism Ntawm Cov Neeg Raug Tshuaj

Cov ciaj sia tuaj yeem tsim muaj cov kabmob hauv cov tshuaj pleev ib ce nyob rau ntawm tej yam kabmob: lub cev kub, kev pH, osmotic siab, hluav taws xob, thiab cov chaw siv tshuaj, cov khoom noj (C, N, P, S source), oxygen, . Raws li qhov no, qhov mechanism ntawm preservatives yuav tau sau ua ke luv luv.

1) hauv qee yam khoom uas muaj cov ntsiab lus tsis muaj ya raws xws li tshuaj pleev, cov tshuaj microbes feem ntau yog cov nyom loj hlob raws li qhov qub.

2) rau feem ntau cov kab mob, feem ntau haum PH ntau yog ze rau nruab nrab (6.5 ~ 7.5), cov kua qaub thiab muaj alkali tsis haum rau txoj kev loj hlob ntawm microbes, xws li cov kua txiv acid ntau, cov nyhuv anticorrosion feem ntau yog qhov khoom nruab nrab;

3) kev txo lossis txo osmotic siab tuaj yeem ua rau rupture ntawm cell membrane thiab contraction thiab lub cev qhuav dej ntawm membrane.

4) qhov lwm qhov nro nto tseem yog ib qho ntawm cov xwm txheej uas cuam tshuam rau kev loj hlob ntawm microbes. Hauv qee cov qauv uas muaj ntau txoj kev siv cov surfactants, microbes tsis yooj yim loj hlob. Nyob rau hauv no hwm, cov cationic surfactants muaj ntau mas, thiab lub physiological toxicity ntawm anions thiab non ions rau microbes yog heev me me.

5) Feem ntau, qhov chaw zoo tshaj plaws uas tsim cov kab mob no yog 30 ~ 37 C, thiab cov pwm thiab cov poov xab yog 20 C ~ 25 C, yog li cov txheej txheem kev kub ntxhov siab tuaj yeem txais, tab sis tus neeg bacillus tuaj yeem tsim tau cov tshuaj tiv thaiv tom qab mus rau ib puag ncig, txawm tias qhov kub ntawm 80 C ~ 90 C tsis raug tua ntawm qhov kub siab nyob hauv ib lub sij hawm luv luv.

Cov khoom ntawm preservatives rau microorganisms tsuas yog tau yog hais tias lawv ncaj qha mus rau microorganisms. Txhaj tshuaj tiv thaiv yog thawj zaug sib txuas nrog cov membrane, adsorption, los ntawm daim nyias nyias ntawm lub cytoplasm, thiab tom qab ntawd ces tuaj yeem ua si ntau qhov chaw kom tiv thaiv kev luam tawm ntawm tes lossis tua nws. Nyob rau hauv qhov tseeb, nws yog tsuas yog cov nyhuv ntawm antiseptic on cell phab ntsa thiab cell membrane, ntxiv rau cov kev ua ntawm cov enzymes uas cuam tshuam rau cov metabolism ntawm lub hlwb, los yog cov cawv rau cov qauv ntawm ib feem ntawm lub cytoplasm.