ISO 27971-2023.docx
INTERNATIONA1.STANDARDISO27971editionThid2O23-O6Cerea1.sandcerea1.products一Commonwheat(Triticumaestivum1.)DeterminationofA1.veographpropertiesofdoughatconstanthydrationfromcommercia1.ortestf1.oursandtestmi1.1.ingmethodo1.ogyCerea1.esetproduitsCerea1.iers-B1.ete11rfre1riticum.aestivum1.M,业烯磔严喝碗楸歌般P的礴嫌减曲解橄腑感产GerCOPYRIGHTPROTECTEDDOCUMENT©ISO2023IUirhM*hedbdi1.iUedotherwiseupdhi.o啪InPSd1.Mc;GeatrOn1.<nm11nr1amaqmr6即8copFyiHntonmaytheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanberequestedfromeitherISOattheaddressbe1.oworISO'smemberbodyinthecountr)oftherequester.f),WV>fifiU81.andonnet8CH-1214Vernier,GenevaPhone：M1.22749O1.11觥ftte:丽丽BQrgPub1.ishedinSwitzer1.andContentsForewordV8.3hcatPrePara1.iOn68.4.3moistening)799.2.2Reduction8100U«.，“-"，一"-“，M-"Mw3-“三-”10.5.3Secondoperation:p1.acingtheextension1510.6.3Maximumabsdssapressureparameter,1811HiPageIntroductionviScope1Normativereferences1Termsanddefinitions1Princip1.e1Reagents2Apparatus2Samp1.ing6Preparationofthewheatfor1.aboratorymi1.1.ing.68.1 C1.eaningthe1.aboratorysamp1.e68.2 Testportion>8.4 moisturecontentdetermination8.4.1 Genera1.68.4.2 Wheatwithinitia1.moisturecontentbetween13%and15%(one-stageWheatwithamoisturecontent1.essthan13%(tvro-stagemoistening)8.4.4 Wheatwithamoisturecontentgreaterthan15%(pre1.iminarydryingfo1.1.owedbymoistening,asdescribedabove)71.boratOrymi1.1.ing72Ge?9.2ProCedUre89.2.1 Breaking9.2.3 F1.ourhomogenization89.2.4 Storageofthef1.our9PreparationandA1.veographtest10.1 Pre1.iminarychecks910.2 Pre1.iminaryoperations1()10.4 Kneadingofdoughtestpieces10.5 A1.veographtest1510.5.1 Initia1.preparation1510.5.2 Firstbiaxia1.pattythe1.owerp1.ate10.6 ExpressionofA1.veographtestresu1.ts1710.6.1 Genera1.1710.6.2 Meanatrupture,1.P10.6.4 Swe1.1.ingindex.G181065E1.aS口IndeX./c一.19IQK6dfuratio<!9Defrmation19Precision11.1 InterIaboratorytests1911.1.1 Commercia1.f1.our1911.1.2 F1.our1.imitsfrom1.aboratorymi1.1.ing11.2.2 CGonnrHtiaI.f1.Qur.=r.1.imitsestab1.ishedbyIheinter1.aboratorytest._.2011.2.3 F1.ourobtainedfrom1.aboratorymi1.1.ing2011.3Reproducibi1.ity1.imits211132CSfinfi瞅iaour-1.imitSestab1.ishedbytheproficiencytests2111.3.3F1.ourobtainedfrom1.aboratorymi1.1.ing221211.4Uncertainty221'estreport22AnnexA(informative)('haracteristicsofthemi1.1.suitab1.eforobtaininga1.aboratorymi1.1.edAnnex B (normative)Quantityofwatertobeaddedtowheatforconditioning25Annex C (info11native)Samp1.emi1.1.ingsheet26Annex D (informative)Conversiontab1.efrom1.toG28nnexE(informative)Inter1.abOratOryandproficiencytestdataforcommercia1.f1.ours30AnnexF(informative)Inter1.aboratorydatafor1.aboratorymi1.1.edf1.our40AnnexG(informative)RoutinemaintenanceinstructionsfortheA1.veograph52AnneXH(informative)Assessmentofproteo1.yticactivityinwheat(T.aestivum1.)orf1.our54Bib1.iography.一.一.一.56Forewordthrough(1.SOmittees.workofPreparingbody1.ntemationa1.Standardsisnorma1.1.ytechnica1.e1.ectrotechnica1.standardization.Internationa1.E1.ectrotechnica1.Commission(IEC)ona1.1.mattersofdescribedtypesofISO/IECDirectivesrShouIdbePartiCU1.ar,documentwasapprova1.accordancewiththeISO（八）patent(三).attcntion1.akcs1.hcnopossibiHtyconcerningi11p1.enentationvahdityapp1.icabi1.ityinvo1.vec1.aimedcautioncdavai1.ab1.cWWW0iwg/PaUHKdatcstinformation,Whichresponsib1.eidentifyinganypatentconstitutenameendorsement,documentisinformationgivenfortheconvenienceofusersanddoesnotexpressionsre1.ated。伸nization(WTO)assessment,asinwe1.1.asinformationBarrierstoTradeadherenceseeCereaZsdocumentWaSinCo1.1.abora1.ionTcchnica1.CornmittecCornrnittecFoodsiandardizationsubcommitteeTechnica1.revised,editioncance1.sandrep1.acesthesecondedition(ISO27971:2015),whichhasbeentechnica1.1.ytheo1.destinstruments(beforeA1.vcoNG)havebeenremoved;comp1.eteIistingquestionshodiesthiscandocumentQna1.standardsbody.AISO2023-A1.1.rightsreservedISO(theInternationa1.OrganizationforStandardization)isawor1.dwidefederationofnationa1.standardsbodiesmemberbodies).TheEachmemberinterestedinsubjectforwhichcarriedoutcommitteehasbeenestab1.ishedhastherighttoberepresentedonthatcommittee.Internationa1.organizations,governmenta1.andnon-ove11menta1.1.in1.iaisonwithISO,a1.sotakepartinthework.ISOco1.1.aboratesc1.ose1.ywiththeTheproceduresusedtodeve1.opthisdocumentandthoseintendedforitsfurthermaintenancearedifferentinthedocumentPart1,InnotedThiSthedifferuiMdraftedincriteriaforeditoria1.ru1.esoftheISO/IECDirectives,Part2(seewww.iso.org/direc1.
