Ethylene oxide (EO) tau siv tshuaj tua kab mob thiab ua kom tsis muaj menyuam rau lub sijhawm ntev thiab tsuas yog cov roj sterilant nkaus xwb uas tau lees paub los ntawm lub ntiaj teb tias qhov kev ntseeg siab tshaj plaws. Yav tag los,ethylene oxidefeem ntau yog siv rau industrial-scale disinfection thiab sterilization. Nrog rau txoj kev loj hlob ntawm niaj hnub kev lag luam technology thiab automation thiab ntse technology, ethylene oxide sterilization technology yuav siv tau yam xyuam xim nyob rau hauv cov tsev kho mob kom sterilize precision cov cuab yeej kho mob uas ntshai ntawm tshav kub thiab noo noo.

Cov yam ntxwv ntawm ethylene oxide

Ethylene oxideyog lub cim thib ob ntawm cov tshuaj tua kab mob tom qab formaldehyde. Nws tseem yog ib qho ntawm cov tshuaj tua kab mob zoo tshaj plaws thiab cov tswv cuab tseem ceeb tshaj plaws ntawm plaub lub tshuab ua kom tsis muaj qhov kub thiab txias.

Ethylene oxide yog ib qho yooj yim epoxy compound. Nws yog cov roj tsis muaj xim ntawm chav tsev kub thiab siab. Nws hnyav dua li huab cua thiab muaj ntxhiab tsw ntxhiab ether. Ethylene oxide yog nplaim taws thiab tawg. Thaum huab cua muaj 3% mus rau 80%ethylene oxide, ib qho tawg sib xyaw ua ke yog tsim, uas kub hnyiab lossis tawg thaum raug cov nplaim taws. Feem ntau siv ethylene oxide concentration rau tshuaj tua kab mob thiab ua kom tsis muaj menyuam yog 400 mus rau 800 mg / L, uas yog nyob rau hauv cov nplaim taws thiab tawg concentration ntau hauv huab cua, yog li nws yuav tsum tau siv ceev faj.

Ethylene oxide tuaj yeem sib xyaw nrog cov roj inert xws licarbon dioxidenyob rau hauv ib tug ratio ntawm 1: 9 los ua ib tug tawg-pov thawj sib tov, uas muaj kev ruaj ntseg rau tshuaj tua kab mob thiab sterilization.Ethylene oxidetuaj yeem polymerize, tab sis feem ntau cov polymerization qeeb thiab feem ntau tshwm sim hauv cov kua hauv lub xeev. Hauv kev sib xyaw ntawm ethylene oxide nrog carbon dioxide lossis fluorinated hydrocarbons, polymerization tshwm sim qeeb dua thiab cov khoom polymers tsawg dua yuav tawg.

Txoj Cai ntawm Ethylene Oxide Sterilization

1. Alkylation

Lub mechanism ntawm kev ua ntawmethylene oxideHauv kev tua ntau yam kab mob microorganisms yog alkylation. Cov chaw ua haujlwm yog sulfhydryl (-SH), amino (-NH2), hydroxyl (-COOH) thiab hydroxyl (-OH) hauv cov protein thiab nucleic acid molecules. Ethylene oxide tuaj yeem ua rau cov pab pawg no tau txais cov tshuaj tiv thaiv alkylation, ua rau cov kab mob macromolecules ntawm cov kab mob tsis ua haujlwm, yog li tua cov kab mob.

2. inhibit kev ua haujlwm ntawm cov enzymes lom

Ethylene oxide tuaj yeem cuam tshuam kev ua haujlwm ntawm ntau yam enzymes ntawm cov kab mob, xws li phosphate dehydrogenase, cholinesterase thiab lwm yam oxidases, cuam tshuam qhov ua tiav ntawm cov txheej txheem metabolic ntawm cov kab mob thiab ua rau lawv tuag.

3. Cov nyhuv tua ntawm cov kab mob

Ob leegethylene oxidekua thiab roj muaj zog microbicidal teebmeem. Hauv kev sib piv, cov txiaj ntsig microbicidal ntawm cov roj muaj zog dua, thiab nws cov roj feem ntau yog siv los tua kab mob thiab ua kom tsis muaj menyuam.

Ethylene oxide yog cov tshuaj tua kab mob dav dav uas muaj txiaj ntsig zoo heev uas muaj kev tua neeg muaj zog thiab ua kom tsis muaj zog ntawm cov kab mob hauv lub cev, kab mob spores, fungi, thiab kab mob. Thaum ethylene oxide tuaj rau hauv kev sib cuag nrog cov kab mob, tab sis cov kab mob muaj cov dej txaus, cov tshuaj tiv thaiv ntawm ethylene oxide thiab cov kab mob yog cov tshuaj tiv thaiv thawj zaug. Cov koob tshuaj uas inactivates ntshiab kab lis kev cai microorganisms, cov tshuaj tiv thaiv nkhaus yog ib txoj kab ncaj nraim ntawm tus nqi semi-logarithmic.

Kev siv ntau yam ntawm ethylene oxide sterilization

Ethylene oxidetsis ua kom tsis muaj menyuam puas tsuaj thiab muaj zog nkag mus. Feem ntau cov khoom uas tsis haum rau kev ua kom tsis muaj menyuam los ntawm txoj kev dav dav tuaj yeem tua kab mob thiab ua kom tsis muaj menyuam nrog ethylene oxide. Nws tuaj yeem siv rau kev ua kom tsis muaj menyuam ntawm cov khoom siv hlau, endoscopes, dialyzers thiab cov khoom siv kho mob pov tseg, muaj tshuaj tua kab mob thiab ua kom tsis muaj menyuam ntawm ntau yam ntaub, cov khoom yas, thiab tshuaj tua kab mob ntawm cov khoom nyob rau hauv cov kab mob sib kis (xws li tshuaj fiber ntau fabrics, tawv, ntawv, ntaub ntawv, thiab roj paintings).

Ethylene oxide tsis ua rau cov khoom tsis muaj tshuaj lom thiab muaj zog nkag mus. Feem ntau cov khoom uas tsis haum rau kev ua kom tsis muaj menyuam los ntawm txoj kev dav dav tuaj yeem tua kab mob thiab ua kom tsis muaj menyuam nrog ethylene oxide. Nws tuaj yeem siv rau kev ua kom tsis muaj menyuam ntawm cov khoom siv hlau, endoscopes, dialyzers thiab cov khoom siv kho mob pov tseg, muaj tshuaj tua kab mob thiab ua kom tsis muaj menyuam ntawm ntau yam ntaub, cov khoom yas, thiab tshuaj tua kab mob ntawm cov khoom nyob rau hauv cov kab mob sib kis (xws li tshuaj fiber ntau fabrics, tawv, ntawv, ntaub ntawv, thiab roj paintings).

Yam cuam tshuam rau kev ua kom tsis muaj menyuam ntawmethylene oxide

Cov nyhuv sterilization ntawm ethylene oxide yog cuam tshuam los ntawm ntau yam. Txhawm rau kom ua tiav cov txiaj ntsig zoo tshaj plaws kom tsis muaj menyuam, tsuas yog los ntawm kev tswj hwm ntau yam zoo tuaj yeem ua nws txoj haujlwm zoo tshaj plaws hauv kev tua kab mob thiab ua tiav nws lub hom phiaj ntawm kev tua kab mob thiab ua kom tsis muaj menyuam. Lub ntsiab tseem ceeb cuam tshuam rau kev ua kom tsis muaj menyuam yog: concentration, kub, txheeb ze av noo, sijhawm ua haujlwm, thiab lwm yam.