学科分类
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1 个结果
  • 简介:Inthisstudyatmosphericpressuredielectricbarrierdischarge(DBD)plasmahasbeenemployedforsterilizingdryturmericpowders.A6kV,6kHzfrequencygeneratorwasusedtogenerateplasmawithAr,Ar/O2,He,andHe/O2gasesbetweenthe5mmgapoftwoquartzcoveredelectrodes.Thecompletesterilizationtimeofsamplesduetoplasmatreatmentwasmeasured.Themostimportantcontaminantofturmericisbacillussubtilis.Theresultsshowthattheshorteststerilizationtimeof15minisachievedbyexposingthesamplestoAr/O2plasma.Survivalcurvesofsamplesareexponentialfunctionsoftimeandtheadditionofoxygentoplasmaleadstoasignificantincreaseoftheabsolutevalueoftimeconstantofthecurves.MagnitudesofproteinandDNAintreatedsampleswereincreasedtoasimilarvalueforallsamples.Taste,color,andsolubilityofsampleswerenotchangedaftertheplasmatreatment.

  • 标签: 放电等离子体 介质阻挡 姜黄 杀菌 等离子体处理 常压