食品和动物饲料的微生物学肠杆菌科检测和计数的水平法菌落计数法

BRITISHSTANDARDBSISO21528-2:2004Microbiologyoffoodandanimalfeedingstuffs—HorizontalmethodsforthedetectionandenumerationofEnterobacteriaceae—Part2:Colony-countmethodICS07.100.01

 
 LicensedCopy:UniofScience&TechnologyUser,UniversityofScience&Tech,SatSep1703:35:03BST2005,UncontrolledCopy,(c)BSI©BSI23September2004ISBN0580444864NationalforewordThisBritishStandardreproducesverbatimISO21528-2:2004andimplementsitastheUKnationalstandard.BSISO21528-2togetherwithBSISO21528-1supersedeBS5763-10:1993whichiswithdrawn.TheUKparticipationinitspreparationwasentrustedtoTechnicalCommitteeAW/9,Microbiology,whichhastheresponsibilityto:Alistoforganizationsrepresentedonthiscommitteecanbeobtainedonrequesttoitssecretary.Cross-referencesTheBritishStandardswhichimplementinternationalpublicationsreferredtointhisdocumentmaybefoundintheBSICatalogueunderthesectionentitled“InternationalStandardsCorrespondenceIndex”,orbyusingthe“Search”facilityoftheBSIElectronicCatalogueorofBritishStandardsOnline.Thispublicationdoesnotpurporttoincludeallthenecessaryprovisionsofacontract.Usersareresponsibleforitscorrectapplication.CompliancewithaBritishStandarddoesnotofitselfconferimmunityfromlegalobligations.—aidenquirerstounderstandthetext;—presenttotheresponsibleinternational/Europeancommitteeanyenquiriesontheinterpretation,orproposalsforchange,andkeeptheUKinterestsinformed;—monitorrelatedinternationalandEuropeandevelopmentsandpromulgatethemintheUK.SummaryofpagesThisdocumentcomprisesafrontcover,aninsidefrontcover,theISOtitlepage,pagesiitov,ablankpage,pages1to10aninsidebackcoverandabackcover.TheBSIcopyrightnoticedisplayedinthisdocumentindicateswhenthedocumentwaslastissued.AmendmentsissuedsincepublicationAmd.No.DateCommentsLicensedCopy:UniofScience&TechnologyUser,UniversityofScience&Tech,SatSep1703:35:03BST2005,UncontrolledCopy,(c)BSI(E)©OSI4002INTERNATIONALSTANDARDISO21528-2Firstedition2004-08-15Microbiologyoffoodandanimalfeedingstuffs—HorizontalmethodsforthedetectionandenumerationofEnterobacteriaceae—Part2:Colony-countmethodMicrobiologiedesaliments—MéthodeshorizontalespourlarechercheetledénombrementdesEnterobacteriaceae—Partie2:MéthodeparcomptagedescoloniesBSISO21528−2:2004LicensedCopy:UniofScience&TechnologyUser,UniversityofScience&Tech,SatSep1703:35:03BST2005,UncontrolledCopy,(c)BSI(4002E)DPlcsidFremiaihTsPDFfilemayctnoianemdebtdedyfepcaes.InccaocnadrweithA'ebodslicensilopgnic,ythisfilemairpebyntedivrowebdetuslahltonideebtlnudeessthetypefaceswhiceerahmleradeddebicsnedetoidnanstlaledtnoehcomputfrepreormigntideehtin.gInwodlnidaotgnhisfile,trapiseatpecctierehtnserehnopsiiblityfonotinfriigngnA'ebodslicensilopgnic.yehTISOtneClarSecrteiraatcaceptlonsiibalityinthis.aeraAiebodsatredamafokrAebodSystemIsncotaropr.deteDailsfotehsoftwacudorpertssutdeocrtaeethisPDFfilecnafebidnuontlareneGehInfoleratitevothefile;tPehDc-Frtaeionmarapterewsetpoerimizdeforirpnti.gnEvyrecaerneebsahtakentosneeruthatthefileissuitlbaefosureybISOmemdobrebeis.Intlnuehikletneveyttahlborpaemleratitgnoitisf,dnuoplsaeeinformttneCehlarSecrteiraattatheserddaigslebnevwo.©ISO4002Allirthgserse.devrlnUetosswrehisespecified,ontrapfothislbupictaionmaebycudorperrodetuilizidenynaformronaybmynae,slecetrinocromecinahcal,inclidungtohpcoiypodnagnmicrfoilm,wittuohrepmissiinonwritignfromietIrehSaOttsserddaehebolworIS'Osmemrebiydobnthecnuotrfoyttseuqerehe.rISOcirypothgfoficesaCetsopale65•[e-mail]©ISO–4002AllrithgsresedevrBSISO21528−2:2004LicensedCopy:UniofScience&TechnologyUser,UniversityofScience&Tech,SatSep1703:35:03BST2005,UncontrolledCopy,(c)BSI(4002E)I©SO–4002AllirthgsersedevriiiContentsPageForeword............................................................................................................................................................ivIntroduction........................................................................................................................................................v1Scope......................................................................................................................................................12Normativereferences...........................................................................................................................13Termsanddefinitions...........................................................................................................................24Principle.................................................................................................................................................24.1Preparationofinitialsuspensionanddecimaldilutions......................................................