简介：Inthisstudyatmosphericpressuredielectricbarrierdischarge(DBD)plasmahasbeenemployedforsterilizingdryturmericpowders.A6kV,6kHzfrequencygeneratorwasusedtogenerateplasmawithAr,Ar/O2,He,andHe/O2gasesbetweenthe5mmgapoftwoquartzcoveredelectrodes.Thecompletesterilizationtimeofsamplesduetoplasmatreatmentwasmeasured.Themostimportantcontaminantofturmericisbacillussubtilis.Theresultsshowthattheshorteststerilizationtimeof15minisachievedbyexposingthesamplestoAr/O2plasma.Survivalcurvesofsamplesareexponentialfunctionsoftimeandtheadditionofoxygentoplasmaleadstoasignificantincreaseoftheabsolutevalueoftimeconstantofthecurves.MagnitudesofproteinandDNAintreatedsampleswereincreasedtoasimilarvalueforallsamples.Taste,color,andsolubilityofsampleswerenotchangedaftertheplasmatreatment.

简介：Theinfluenceontheeffectivenessofsterilizationbylow-temperatureplasmasterilizerCASP-80Awasinvestigatedsoastoprovideatheoreticalbasisforreducingmedicalcostsandachievingidealsterilizationeffectiveness.Toconducttheon-sitesimulationtest,aclinicalmaterialsterilizationtestandatestoftheinfluenceoforganicsubstancewereconducted,theformerbyusingtherepresentativeofBacillusStearothermophilus,preparingthebacteria-contaminatedcarrierthroughpolytetrafluoroethylene(PTFE)simulatedhoseendoscopes,andthelatterbyusingcalfserumastheinfluencefactoroftheorganicsubstance.TheresultsshowthattheCASP-80Alow-temperatureplasmasterilizercouldachieveeffectivesterilizationbyeithertheshort-cycleorthelong-cyclesterilizationmethoddependingondifferentmaterials,apparatus,andextentofcontamination.Theorganicsubstancescouldinfluencetheeffectivenessofsterilizationbythelow-temperatureplasma(H_2O_2)sterilizer.