作者:标准资料网 时间:2024-05-14 13:27:40   浏览:9965   来源:标准资料网

【英文标准名称】:Sensoryanalysis.Methodology.Pairedcomparisontest
【原文标准名称】:感官分析.方法学.成对比较试验
【标准号】:BSENISO5495-2006
【标准状态】:现行
【国别】:英国
【发布日期】:2006-01-30
【实施或试行日期】:2006-01-30
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:空白格式;比较分析法;定义;差值;食品;食品检验;形式;格式(纸);检验师;解释;特性;抽样方法;感官;感官分析;感官分析装置;感官分析(食品);试样制备;试验设备;试验报告;试样;测试;试验条件;检验人员
【英文主题词】:Blankforms;Comparativetests;Comparisonanalysis;Definitions;Differences;Experimentaldesign;Foodproducts;Foodtesting;Forms;Forms(paper);Inspectors;Interpretations;Pairedcomparisontests;Properties;Samplingmethods;Sensory;Sensoryanalysis;Sensoryanalysisapparatus;Sensoryanalysis(food);Specimenpreparation;Statisticalmethodsofanalysis;Statisticaltesting;Testequipment;Testreports;Testsamples;Testing;Testingconditions;Testingpersonnel
【摘要】:ThisInternationalStandarddescribesaprocedurefordeterminingwhetherthereexistsaperceptiblesensorydifferenceorasimilaritybetweensamplesoftwoproductsconcerningtheintensityofasensoryattribute.Thistestissometimesalsoreferredtoasadirectionaldifferencetestora2-AFCtest(AlternativeForcedChoice).Infact,thepairedcomparisontestisaforcedchoicetestbetweentwoalternatives.NOTEThepairedcomparisontestisthesimplestexistingclassificationtestsinceitconcernsonlytwosamples.Themethodisapplicablewhetheradifferenceexistsinasinglesensoryattributeorinseveral,whichmeansthatitenablesdeterminationofwhetherthereexistsaperceptibledifferenceconcerningagivenattribute,andthespecificationofthedirectionofdifference,butitdoesnotgiveanyindicationoftheextentofthatdifference.Theabsenceofdifferencefortheattributeunderstudydoesnotsignifythattheredoesnotexistanydifferencebetweenthetwoproducts.Thismethodisonlyapplicableiftheproductsarerelativelyhomogeneous.Themethodiseffectivea)fordetermining?whetheraperceptibledifferenceexists(paireddifferencetest),or?whethernoperceptibledifferenceexists(pairedsimilaritytest)when,forexample,modificationsaremadetoingredients,processing,packaging,handlingorstorageoperations,orb)forselecting,trainingandmonitoringassessors.Itisnecessarytoknow,priortocarryingoutthetest,whetherthetestisaone-sidedtest(thetestsupervisorknowsapriorithedirectionofthedifference,andthealternativehypothesiscorrespondstotheexistenceofadifferenceintheexpecteddirection)oratwo-sidedtest(thetestsupervisordoesnothaveanyaprioriknowledgeconcerningthedirectionofthedifference,andthealternativehypothesiscorrespondstotheexistenceofadifferenceinonedirectionortheother).
【中国标准分类号】:X04
【国际标准分类号】:67_240
【页数】:30P.;A4
【正文语种】:英语