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1、CHITOSANONANDRAEANUMTISSUEINHIBITIONOFBACTERIACONTAMINATIONAbstract:Thefungiwasisolatedandpurifiedfrompollutedanthuriumsubculturemedium,identifiedtobeDeuteromycotinaHyphpmycetesHyphomycetalesDematiaceaeandtrichoderma.Theinhibitioneffectofthethreekindsofchitosanonthefungiwasconducted
2、.Theresultsshowedthatthechitosanhadinhibitioneffectonthefungi.Thehigherconcentrationsofchitosanhadabetteinhibitioneffectthanthelowerones.Theinhibitioneffectof50000and250000molecularweightchitosanisbetterthanthatofthe3000molecularweight.Itispreliminarilyprovedthatchitosanhadgoodinhib
3、itioneffectonthefungifrompollutedtissueculture,andwillhavegoodapplicationvalueinthefieldsofpollutionpreventioninflowerstissueculture.Keywords:tissueculture；contamination；Chitosan；inhibitioneffectPlanttissueculture,notonlyinplantbreeding,rapidpropagationofseedlingsandtheproductionofu
4、sefulsecondarymetabolites,suchastheuseofawiderangeofplantgeneticengineeringisandPlantMolecularBiology,oneoftheimportantfoundationforthestudy[1].Pollution,browning,glassandtissueculturearethemainproblems,includingpollutionofthemostcommon[2].Thereforetakeeffectivepreventionandcontrolm
5、easurestoreducethechanceofcontaminationoccurred,tissuecultureisanimportantguaranteeforsuccess.Chitosan(chitosan)isthechitininstrongalkalineconditionsfromB.AftertheformationofacylanimportantderivativeisdeterminedbyanumberofN-acetylglucosaminethroughβ-(1-4)glycosidicbondlinkingthenatu
6、reof18itmorelively.Hasnaturalantibacterialpropertiesofchitosan,andabroadspectrumantimicrobial,inrecentyears,chitosaninvariousfieldssuchasagriculture,medicine[3],manufacture[4],food[5],etc.Theuseofgreatimportance.Tissuecultureofthechitosanintheapplicationofinhibitionhasnotbeenreporte
7、d.Thisexperimenttobefromthecontaminatedmediumsubcultureandraeanumextraction,purificationandidentificationofbacteriacontamination,withdifferentmolecularweightchitosananddifferentconcentrationsoftheirinhibition,andexplorethebestinhibitoryeffectofchitosanmolecularweightandthebestinhibi
8、toryconcentration,i
