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1、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
2、嫌减曲解橄腑感产GerCOPYRIGHTPROTECTEDDOCUMENTISO2023IUirhM*hedbdi1.iUedotherwiseupdhi.o啪InPSd1.Mc;GeatrOn1.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-”10.5.3Secondope
3、ration:p1.acingtheextension1510.6.3Maximumabsdssapressureparameter,1811HiPageIntroductionviScope1Normativereferences1Termsanddefinitions1Princip1.e1Reagents2Apparatus2Samp1.ing6Preparationofthewheatfor1.aboratorymi1.1.ing.68.1 C1.eaningthe1.aboratorysamp1.e68.2 Testportion8.4 moisturecontentdetermin
4、ation8.4.1 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
5、.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
6、.1 Genera1.1710.6.2 Meanatrupture,1.P10.6.4 Swe1.1.ingindex.G181065E1.aS口IndeX./c一.19IQK6dfuratiormah济映X*ion(四瓶的唯urgdoW期丽曲曲以蝴n.withair,whichisRecordingthepressuregeneratedinsidethebubb1.ethroughoutthedeformationofthedoughtestpieceunti1.itrupturesprovidesinformationonthefo1.1.owing：a) Theresistanceof
7、thedoughtodeformation,oritsstiffness.I1.isexpressedbythemaximumpressureparameter,P.b) TihfimNrthPQi1.1.W首汹teiuu闻碰HW(IdhatWX1.1.hgind机Kb1.G1.tisexpressedbythec)Thee1.asticityofthedoughduringbiaxia1.extension.Itisexpressedbythee1.asticityindexre.d)p用优收Wa1.re拙/丽舱eadefOrtU联N盼g册WMm3fuFj5般ugAttstrength,de
8、f。确fib忤process).Itisexpressedbytheparameter,W.TheP/1.ratioisameasurementoftheba1.ancebetweenstiffnessandextensibi1.ity.A1.veographsarecommon1.yusedthroughoutthewheatandf1.ourindustry,forthefo1.1.owingpurposes:se1.ectingandassessingdifferentvarietiesofwheatandmarketingbatchesofwheat;b1.endingdifferen
9、tbatchesofwheatorf1.ourtoproduceabatchwithgivenva1.uesfortheA1.veographiccriteria(W1.Ptand1.)comp1.yingwiththeproportiona1.1.awsofb1.ending;火翊。演Kuri1.s).PrOteo1.ytiCactivityinwheatorf1.ourtodetectpossib1.econtamination(SeeqMex44A1.veographsareusedbothontheupstreamsideoftheindustryformarketing,se1.ec
10、tingand(See哈|淌觎感Edid维W4福t糊U私andonthedownstreamSidethroughoutthebakingindustriesCerea1.sandcerea1.products-CommonwheatTriticumaestivum1.)DeterminationOfA1.veographpropertiesofdoughatconstanthydrationfromcommercia1.ortestf1.oursandtestmi1.1.ingmethodo1.ogy1 ScopeThisdocumentspecifiesamethodofdetermini
11、ng,usinganA1.vcographrtherheo1.ogica1.propertieshikf1.i11iahh场goF(htorybthWdfromcommonwheat11our(Triticumaestivum1.)producedbyItdescribestheA1.veographtestandhowtousea1.aboratorymi1.1.toproducef1.ourintwostages:stage1:endosperm;PreParaHOnofthewheatgrainformi1.1.ingtomakeiteasiertoseparatethebranfrom
12、thestage2:themi1.1.ingprocess,inc1.udingbreakingbetweenthreef1.utedro1.1.ers,reductionofpartic1.esizebetreentwosmooth2 Normativereferencesro1.1.ersandtheuseofacentrifuga1.sievingmachinetogradetheproducts.赫确取他加密匹期his11iKH4ent.网富后用nrefttoW即第怅ediO6na11t9fp1.Mtundatedreferences,the1.atesteditionoftheref
13、erenceddocument(inc1.udinganyamendments)app1.ies.ISO835.1.abOrQtoryg1.QsSWareGraduatedpipettesISO712rCerea1.sandcerea1.productsDeterminationofmoisturecontentReferencemethodISO1042t1.aboratoryg1.asswareOne-markvo1.umetricf1.asks1.陋Q版的渺，滓代U消晒SIUf1.s,cerea1.sandmi1.1.edcerea1.productsGuide1.inesforthea
14、pp1.icationof3 TermsanddenitionsNotermsanddefinitionsare1.istedinthisdocument.ISOandIECmaintaintc11nino1.ogydatabasesforuseinstandardizationatthefo1.1.owingaddresses：ISOOn1.inebrowsingp1.atform:avai1.ab1.eathttps：/www.iso.org/obp4IECP8聊Cdia：avai1.ab1.eWWwTe1.eefePefhefgrighdoksa1.ijW(ttAnixureconsto
15、tf1.owr(Wi5fifctUte11vithstandseva1.rtimdpruwSubsequent1.y,itinf1.atesintoabubb1.e,accordingtoitsextensibi1.ity,andruptures.Thechangeinthedoughismeasuredandrecordedintheformofacurveca1.1.edanA1.veogram*.5ReagentsUn1.essotherwisespecified,useon1.yreagentsofrecognizedana1.ytica1.grade,andon1.ydisti1.1
16、.edordeminera1.izedwaterorwaterofequiva1.entpurity.5.1Sodiumch1.orideso1.ution,obtainedbydisso1.ving(250,2)gofsodiumch1.oride(NaCI)inwaterandthenmakingthevo1.umeupto1000m1.Thisso1.utionsha1.1.notbestoredformorethan15daysanditstemperaturesha1.1.be(202)whenused.5.2RdinedveJetabIeOiHOWPoIyIJnsMUmt6$UCh
17、peanutItpossib1.eiifit50,4c1.osedcontainerandrep1.aceregu1.ar1.y(at1.easteverythreemonths).84。邂5烬S5ftgiwft观bn联野J丽司XtfJ1.蜘酮神尸邂6VaIUeof1.essthan5 .3Co1.ddegreasingagentroptimumsafety.6 ApparatusTheusua1.1.aboratoryapparatusand,inparticu1.ar,thefo1.1.owingsha1.1.beused.6.1c1.eaner,fittedwithsievesforwh
18、eatc1.eaning,inaccordancewiththemanufacturer,sinstructions.6.2 Conica1.orriff1.esamp1.edivider.Ana1.ytica1.ba1.ance,accurateto0,01g.G1.assburette,of50m1.incapacity,graduatedin1m1.divisions.Rotaryb1.enderi)fforgrainconditioningandf1.ourhomogenization,inc1.udingthefo1.1.owingcomponents:6.5.1Constantsp
19、eedstirrer.6.5.2Twowormscrewsintegra1.withthef1.ask,possib1.yviathestopper(oneforwheatpreparation,theotherforf1.ourhomogenization).6.5.3Severa1.wide-neckedp1.asticf1.asks.2Icapacity.Testmi1.)(1.aboratorymi1.)2)tmanua1.1.yorautomatica1.1.yoperated(seeAnnexA).OrjftrbeatiOneH附粕MQuttwok姨21pnM8j11W9bbICn
20、deXthiumcHoico11bhMrndnb1.jSmcrcia1.1.y.Thisofthisproduct.ISOofthisproduct.26.7 A1.veographsystem(seeTab1.eforSPeCifiUUonSamk1.uraaeristicsofCheaccessories)inc1.uding6.7.1KneadingmachineAIvboNGAIvboPCFigureJfortheAIveoIabaccuratetemp6.7.2Dedicatedsoftware,recordtime,performthe1.cu1.ationsstoreorNOTE
21、Forinstructions.detai1.sconcerningtheuseofthedifferentregistrationsystems,seethemanufacturers6.7.3 1.ve(raphmeasuringbuxUfowtttionoftheA1.VeoPCFigureformodcontro1.andhygrometrycontro1.fortheA1.veo1.abmode1.,andhavingtworestchambers(threefortheA1.veo1.ab),eachdeformation,containingfivep1.atesonwhicht
22、hedoughtestpiecescanbearrangedtorestpriorto6.8withtheapparatustheA1.veoNGandA1.veoPC11odds),160m1.capacity,graduatedindivisionsNidifiEofthcTh11sWtshiianctriQu11di)vinrhHscd(DJirtrief口ggipWAhAN阴i1.ab1.c拙dcotahcrmUy.modc1.sinformationisgivenfortheconvenienceofusersofthisdocumentanddoesnotconstituteane
23、ndorsementbyISOoftheseproducts.Tab1.e1SpecificationsandcharacteristicsoftheaccessoriesrequiredforthetestQuantityVa1.ueandtokr1.Mc(泳Heightofsheetingguides1.argediameterofthesheetingro1.1.erSma1.1.diameterofthesheetingro1.1.erInsidediameterofthedoughcutterDiameteroftheaperturecreatedwhenthemovingp1.at
24、eopens(WhiChdeterminestheeffectivediameterofthetestpiece)M1.ifbPftftf1.Mfetance舐(IWSARWrfdMy1.nOVmgp1.atesafterdamping(equa1.totheVo1.umeofairautomatica1.1.yinjectedtodetachthetestpiecepriortoinf1.atingthebubb1.e(12,(40.00.1)mm(33.30.1)mm46,0i(55,00.1)mm(2,6710,01)mm(1812)m1.Airf1.owuensuringint)ati
25、on(962)1./hISCC1.y后Ire司EQiifiIw1.ani球1伙沙eUndvQbtammwommwwwtrtHn毋RmO3t0h(i11.2.3nozzonthemanometerchart).Theairowrateissetwiththestandardizedpressuredropi0uinapressurecorrespondingto;ihrihtof60mmH?0(B.0kPa)onthemancimcterchurt,i.e.(9612)1./h(seFigure4).FortheA1.veohbmode1.thiscontro1.isautomatized,an
26、dnoi1.aractionisrequired.ABAmixerBA1.veograph1 burettetoraddingwater2 mixerscreen4 mixercontro1.pane1.5 A1.veographcontro1.pane1.6 testp1.ateoftheA1.veographunit7 restingchambermixingFigure1MixerandA1.veographpartoftheA1.veoNGandA1.veoPCmode1.s1 mixingbow1.5storagecompartmentforaccessories2 waterinj
27、ectionnozz1.e6doughco1.1.ectorandhumidifier3 Aveo1.abcontro1.pane1.7restingchamberA1.veographtestWiWWrZMixerandA1.veographptwftJVttfveo1abmode1.1knur1.edring2nozz1.e3 nozz1.eho1.der4 topp1.ateFigure3F1.owcontro1.systemfortheA1.veoNGOrA1.veoPCmode1.s7 Samp1.ingArepresentativewheatorf1.oursamp1.eshou1
28、.dbesenttothe1.aboratory,itsha1.1.notbedamagedorchangedduringtransportorstorage.Samp1.ingisnotpartofthemethodspecifiedinthisdocument.Recommendedsamp1.ingmethodsaregiveninISO243337,8 Preparationofthewheatfor1.aboratorymi1.1.ing8.1 C1.eaningthe1.aboratorysamp1.eIfnecessary,passthe1.aboratorysamp1.ethr
29、oughamechanica1.c1.eaner(6.1)toensurethata1.1.stonesamaitaIbefgdWxenoaettouUitmtithero1.1.ersduringmi1.1.ing.Amagneticdevice8.2 TestportionThetestportionsha1.1.berepresentativeoftheinitia1.wheatmass.Usethesamp1.edivider(6.2)tohmiHbBeaizeCaff1.ai而YidtertWInatio旗aborato学UbpIi1.IMitfrtteminSffIUnmatftq
30、Ui由帆htt1.obdratorypiiingmi1.1.ingsha1.1.be800g.8.3 WheatmoisturecontentdeterminationDetenninethemoisturecontentofthetestportionasspecifiedinISO712,orusingarapiddeviceeW1.ftSUB)p1.eparttWon12099).8.4.1 Genera1.Preparingthewheatformi1.1.ingmakesiteasiertoseparatethebranfromtheendosperm.Thetargetmoistu
31、recontentis(16,00,5)%.8.4.2 Wheatwithinitia1.moisturecontentbetween13%and15%(one-stagemoistening)Usingtheba1.ance(6.3),weighatestportion(minimum800g)tothenearest1gofwheatandpouritintotheb1.ender.Addtherequiredamountofwater(seeTab1.eB.1.)tothegrainfromtheburette(6.4)direct1.y,orafterweighingittothenear
