浙江省生食牡蛎中副溶血性弧菌的风险评估

整理文档很辛苦,赏杯茶钱您下走!

免费阅读已结束,点击下载阅读编辑剩下 ...

阅读已结束,您可以下载文档离线阅读编辑

资源描述

11211(13100292310051)(Vibrioparahaemolyticus,VP),、。,,、、4。2,VP,。,VP,2.28lgg-1;、、、VP8.76×10-5g-1、2.30×10-3g-1、2.08×10-4g-1、2.53×10-7g-1;、3,,4,,2~3。;;;1009-7848(2010)03-0193-07,,。、,。。、,、,(Vibrioparahaemolyticus,VP)、、。FDA2005[1]。,[2],[2];,,,[3];FDA,,,。,,[4]。,,,。VP。,。(CodexAlimentariusCommission,CAC)“”[5-6],VP,、、VP。11.1。,28~30°N:2009-06-29:(2008C22053);(20080632B17):,,1970,Vol.10No.3Jun.2010JournalofChineseInstituteofFoodScienceandTechnology1032010620103119~127°ESST[7];《2007》;VP。1.2CAC,、、4。(12~2)、(3~5)、(6~8)(9~11)。MicrosoftExcel,β-Poisson,,@Risk。22.12.1.1VP,、、,30~37℃,pH7.4~8.2,3%~4%,56℃5min90℃1min1%5min,[8]。VP,、,(ThermalstableDirectheamolysin,TDH)。TDH[4]。VP,、、、、[8],2~4d[9],,[10]。[11],,、[12]。2.1.2VP[13]200538、、,5VP60.0%(18/30)。3012VPMPN30(40%),18VPMPN60~11000/100g。[14]VP。20039~124(、、、),,VP(61%)(P0.05),VP(155MPN/100g)。[15]、、、、、、7,162,250g。VP,50.4%。[16],2005、、,66431,49VP,11.37%;32,1()VP,3.13%;45,1()VP,2.22%;77,2,2.60%。403,24,5.96%。1983~1992,29%VP[17]。1992~2004,54.63%67.24%,,VP33.52%[18]。[19]1986~2003,VP19,25.33%,(29.33%)。[20],,TDHTRH(),84tdh92.86%,trh2.38%;tdhtrh,。2.2。-。VP,β-PoissonVP:Pr(ill/d)=1-(1+d/β)-α,d———VP(CFU/g);Pr(ill/d)———VP;α、β———,α1.89×108,β5.36。,194103。2.3VPVP。,。2.3.1,VP、、,[3]。1。2.3.1.1VPDepaola[17]VP。,15~30μg/L,VP10%[10]。ISSC/FDA24μg/L[10],,。VP,:lg(NVP)=α+β×T+ε,NVP———VP,CFU/g;T———,℃;α、β———lg,α=-1.03,β=0.12;ε———,0。2.3.1.2VPVPβ,VPVP,(p)β-,VPVP。β-:CVPI(NVP)~B(NVP,p)p赞Beta(α,β);α=P(1-Φ)/Φ;β=(1-P)(1-Φ)/Φ,CVP———VP(CFU/g);n———VP;α、β——;P———VP,0.002;Φ———,0.00045。2.3.2VP。VP:、、、。2,VPVP。2.3.2.1VPGeoperts,。μm姨=b·(T-Tmin)·[{1-exp(c·(T-Tmax))}·(aw-aw,min)·(aw-aw,max)姨]ln(10)姨,μm———(lg/min);αw———,0.985;T———(K)。:b=0.0356;c=0.34;Tmin=278.5;Tmax=319.6;αw.min=0.921;αw.max=0.998;d=263.64。,VP:lgN(t)=MIN{lgn(0)+μm·t,A}19520103,N(T)———(t)(CFU/g);A———VP;μm———(lg/min)。2.3.2.2VP,VP。,1~10h()、。VP。,6.0lg(CFU/g)。k:ki=1Σμm×(k+1)-ik=μm×[(k+1)-1kki=1Σi]=μmk+12,μm———VP(lg/h)。Gooch[21],3℃14~17d,VP0.0003lg/h[20]。。2.4-,VP,。、、。2.4.1,SSTPert,1。2.4.2VP@Risk,2。,VP。2.4.33,3。:1):VP,50℃5min4.5~6lg[9]。2):-30℃-15℃30dVP1.2lg1.6lg;-20℃35dVP2~3lg。30d,VP2lg[9]。SST/℃Pert(7.77,14.32,21.92)Pert(16.8,19.26,24.57)Pert(26.04,27.66,28.66)Pert(5.63,15.62,25.75)T/℃Pert(6.4,8.4,11.0)Pert(14.9,17.3,18.7)Pert(25.1,28.3,29.6)Pert(17.4,19.5,21.7)Tb/hPert(1,24,84)Pert(1,24,60)Tu/hUniform(1,Tb)/hDuniform({1,2,3,4,5,6,7,8,9,10})/dPert(0,0.5,7)/gNormal(72.3,27.6)1VPTable1OriginalvariablesmodelinVPriskassessmentmodel5%95%-2.204621.3374115.349576-1.3248692.2767995.787555-3.4487410.8472075.281269-2.9306240.70939064.6211512VPTable2VPdensitiesatthefourharvestseasons1961033):VP,,VP0~10000[9]。、、、VP8.76×10-5/g、2.30×10-3/g、2.08×10-4/g、2.53×10-7/g。,,2.25×10-8/g()、1.13×10-7/g()、2.52×10-8/g()、3.81×10-8/g()。1992~2004,5.6×10-6,VP33.52%。,,1/10[6],1.88×10-5,。[3],,。。,56℃5min90℃1min1%5min,。,10-7,。2.4.4-。VP,4、5。VP,。,。2.4.5,,,。,56℃5min90℃1min1%5min,。3,VP,VP,2.28lg/g。,。:,。2007,、,19720103。,。,。VP,。,1/10。VP,,,VP-。,、、VP,。4,。,、,、,。[1]USFoodandDrugAdministration(FDA),CenterforFoodSafetyandAppliedNutrition.QuantitativeriskassessmentonthepublichealthimpactofpathogenicVibrioparahaemolyticusinrawoysters[C].US:DepartmentofHealthandHumanServices,2005.[2],,,.[J].,2004,16(3):207-209.[3].[J].,2003,(1):70-71.[4],.[J].,2006,18(2):103-109.[5]CodexAlimentaiusCommission.Draftprinciplesandguidelinesfortheconductofmicrobiologicalriskassessment.ALINOR99P13A.[EB/OL].[6]CAC.Principlesandguidelinesfortheconductofmicrobiologicalriskassessment[S].[7]-.[EB/OL].[2008-04-08].http://mds.coi.gov.cn.[8],.[J].,2005,(11):66.[9]Yi-ChengSu,ChengchuLiu.Vibrioparahaemolyticus:Aconcernofseafoodsafety[J].FoodMicrobiology,2007,24:549-558.[10],.-、[M].:,2007:440-478.[11]MorrisJGJr,BlackRE.CholeraandothervibriosesintheUnitedStates[J].NEnglJMed,1985,312:343-350.[12].[J].,1999,26(1):26-18.[13],,,.55[J].,2006,16(12):1513-1514.[14],,,.2003[C]//ICMSF-.:,2005,17(2):97-99.[15].[J].,2001,28(2):192-194.[16],,.[J].,2007,23(6):745-746.[17]DePaolaA,HopkinL.Hetal.IncidenceofVibrioparahaemolyticusinUScoastalwatersandoysters[J].Appl.Env-iron.Microbiol.,1990,56:2299-2302.[18].1992-2004[J].,2005,17(9):26-27.[19],.1986-2003[J].,2004,5(6):452-453.[20],,.[J].,2008,8(3):143-146.[21]GoochJ.A.,DePaolaA.,BowersJ,etal.GrowthandsurvivalofVibrioparahaemolyticusinpostharvestAmericanoysters[J].FoodProt.,2002,65:970-974.198103《》661,《》(《》)。,《》,,。,《》,、、、。《》,“”,:,;、、,;、,;,。,《》,,。,《》,、、,、;,。(:)!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!RiskAssessmentofVibrioParahaemolyticusinRawOystersinZhejiangShaoYufang1WangWen1ZhangRonghua2YaoXianzhen1YingYibin1(1DepartmentofBiosystemEngineering,ZhejiangUniversity,Hangzhou310029)2ZhejiangCenterforDiseaseControlandPrevention,Hangzhou310051)AbstractTobeakindofhumanpathogenwhichwidelydistributesinmarineenvironment,Vibrioparahaemolyticus(VP)isfrequentlyisolatedfromavarietyofrawseafoods,particularlyshellfish,whichcouldleadtoanacutegastroen-teritis.Foodriskanalysisisthescientificbasisforestabl

1 / 7
下载文档,编辑使用

©2015-2020 m.777doc.com 三七文档.

备案号:鲁ICP备2024069028号-1 客服联系 QQ:2149211541

×
保存成功