2株酸梅汤饮料污染霉菌的分离与鉴定研究

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Vol.9No.6Dec.2009JournalofChineseInstituteofFoodScienceandTechnology962009122(100027):。:,ITSrDNA。:2,(Penicilliumcitreonigrum)(Penicilliumglabrum)。:,。;;;1009-7848(2009)06-0182-06,、、、。,。1995,ObetaJAN[1]60,28℃30d,17%,27%,(Paecilomycesvariotii)、(As-pergillustamarii)、(Aspergillusflavus)(Aspergillusochraceus)。2006,Tourna[2]65,22%,,。,,,。,。[3][4],。[5],。,。、,,,。ITSrDNA,2,,。11.11.1.1。,30d,。1.1.21)PDA:200g,20g,15g,1L。121℃15min。。2):5g,3g,NaCl5g,15g,1L。121℃15min。3)CYA:NaNO33g,KH2PO41g,KCl0.5g,MgSO4·7H2O0.5g,FeSO4·7H2O0.01g,5g,30g,15g,1L。121℃15min。4)MEA:20g,1g,:2008-12-28:(2005DKA21204):,,1981,,:9620g,15g,1L。121℃15min。CTAB,Sigma;、Goldview、1xTAE、10×PCRBuffer、dNTP、TaqDNA,;EDTA、Na-Cl、Tris、、,。1.1.3PCR,MJ;,;,-;,;,eppendorf;HZQ-F,;BCD-265/E,;DSX-280B,;5415D,eppen-dorf;;。1.21.2.1[6]。,1010-5,10-1、10-3、10-530.2mL,PDA。PDA28℃4~6d,37℃4d,。1.2.2[7],。,3CYAMEA(),25℃7d。CYAMEA,、、、、、。,,,、、、、。1.2.3,100mL,25℃、170r/min,3d。1.2.4DNAITSPCR3,,4℃。CTABDNA[8],-20℃,。ITSITS4(5'-TCCTCCGCT-TATTGATATGC-3')ITS5(5'-GGAAGTAAAAGTCGTAACAAGG-3')。100μL,10×10μL;dNTP(2.5mmol/L)8μL;(10μL/L)2.5μL;TaqDNA(2.5U/μL)1.3μL;100μL。ITS:94℃5min,94℃1min,55℃1min,72℃1min,30,72℃10min。PCR。1.2.5ITSGeneBank,,ClustalX(1.83)。MEGA3.1p-dis-tance,Neighbor-Joining,bootstrap。22.1PDA28℃4d2,、。4d。,1;,2。2.2DNAPCRCTABDNA。,DNA23kb(1)。ITS4ITS5,PCR,600bp(2)。2.3ITSrDNA(Pleurotusostreatus),ITSrD-NA(3)。,2,1(PenicilliumcitreonigrumDQ093691)218320096Penicilliumcinerascens(AF033455),bootsrap67%,99.4%;2(PenicilliumadametzioidesDQ681325)(PenicilliumglabrumAY373915),bootsrap96%,100%。184962.44、5。4,1CYA25℃7d,1.8~2.0mm,,,;,;,;,,,。MEA25℃7d,26~28mm,,;、;,;,,,。,2~2.5μm,,;,;4~8,(5~8)μm×(1.5~2)μm,;,1.5~2μm,;,。5,2CYA25℃7d,3.6~4.0mm,,;;,,;,。MEA25℃7d,46~48mm,,;;,;,;。,3~5μm,,;;4~6,(5~8)μm×(2.0~3.0)μm,;,3~4μm,;。12,《-》,ITSrDNA,1、2。2185200963ITSrDNA2。ITSrDNA、、,[9~10];,。,,。,。、,、、[7]。、、、、,、、[7,11]。,。,。,。。,90%~99%[5]。,,[12],,。,,,;,,。[1]ObetaJAN,UgwuanyiJO.Heat-resistantfungiinNigeriaheat-processedfruitJuices[J].IntJFoodSciTechn,1995,30:587-590.[2]TournasVH,HeeresJ,BurgessL.Mouldsandyeastsinfruitsaladsandfruitjuices[J].FoodMicrobiol,2006,23(7):684-688.[3],,.[J].,2003,6(1):6-9.[4].[J].,2007,10(08):1-4.[5].[J].,2002,03:56-59.[6],.[M].:,2006:150-151.[7],.-[M].:,2007.[8],,.CTABDNA[J].,2003,23(6):72-73.[9],,,.ITS7[J].,2007,5(1):14-19.[10],.ITS[J].,2007,35(13):3785-3786.[11]SamsonRA,HoekstraES,FrisvadJC,eds.Introductiontofood-airbornefungi,7thedition[M].USA:ASMPress,2004:214.[12].[J].,2005,7:38.18696StudiesontheIsolationandIdentificationofContaminatingMoldsfromPlumJuiceDrinkLiHuiLiuGuangquanChengChi(ChinaCenterofIndustrialCultureCollection,ChinaNationalInstituteofFood&FermentationIndustries,Beijing100027)AbstractObjective:Toisolateandidentifycontaminatingmoldsfromplumjuicedrink.Method:Contaminatingmoldswereisolatedbyspread-platemethod,andidentifiedbyITSsequenceanalysisandmorphologicalobservation,re-spectively.Results:Twomoldswereisolatedfromplumjuicedrinkwithflocculusprecipitate,andwereidentifiedasPenicilliumcitreonigrumandPenicilliumglabrumrespectively.Conclusions:Basedonthecommonhabitatsofthetwomolds,thecontaminationofthetwostrainsmaycomefromrawmaterialofPlumjuice.KeywordsPlumjuicedrink;contaminatingmolds;isolation;identification121,,《》、《》、《》、《》、《》,。,《》:“,、,”,。,、“”。《》:,、、、、、、、、、、、,,、、。,、、、,。《》,“”。,“”,“”、“”、“”。《》、、,、、、,、、,、、。(:)!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!2187

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