感官分析ppt课件

,ABC,1,-SensoryAnalysis感官分析,-FactorsInfluencingSensoryMeasurement影响感官测定的因素,-ProceduresForSmellingthebrainthenorganizesandintegratestheincomingsensationintoperceptionswiththecontributionofpastexperience;lastlyaresponseisformulatedbasedonthesubjectsperceptions感官受到刺激，将其转化为神经信号传输到大脑；大脑根据以往的经验将感觉组织整合为知觉.；最终，基于主体的知觉而形成反应,11,FactorsInfluencingSensoryMeasurement影响感官测定的因素,Expectationerror期望错误Stimuluserror刺激错误Leniencyerror宽大错误Proximityerror近似错误Centraltendencyerror中心化错误,12,FactorsInfluencingSensoryMeasurement影响感官测定的因素,Suggestioneffect暗示效应Positionalbias(ordereffect)位置偏见(顺序效应)Contrasteffectand对照效应和集中错误convergenceerrorMotivation动力,13,Expectationerror期望的错误Informationgivenwiththesamplemaytriggerpreconceivedideas样品附带的信息可能导致先入为主Stimuluserror刺激的错误Irrelevantcriteria,suchascolororsizeinfluencetheobserver无关的标准如颜色或大小会影响观察者,FactorsInfluencingSensoryMeasurement影响感官测定的因素,14,Leniencyerror宽大的错误Basedontheirfeelingsabouttheresearcher,ignoringproductdifferences根据对研究者的感觉，而忽略了产品的差异,FactorsInfluencingSensoryMeasurement影响感官测定的因素,Suggestioneffect暗示效应Reactionsofothermembersofapanelcaninfluencetheresponseofapanelist品尝小组中其他成员的反应会影响测试者,15,Positionalbias(ordereffect)位置偏见(顺序效应)Scorethesecondproduct(ofasetofproducts)higherorlowerthanexpected给一组产品中第二个产品打分偏高或偏低Contrasteffectandconvergenceerror对照效应和集中错误Exaggeratethedifferenceormasksmalldifferencesbetweentheothersamplesintheirscores夸大或掩盖样品间的差异,FactorsInfluencingSensoryMeasurement影响感官测定的因素,16,Proximityerror近似的错误Correlationbetweencharacteristicsclosetogethermaybehigherthanothercharacteristic相似特征间的关联比其他特征间的关联可能要高一些Centraltendencyerror中心化的错误Scoringproductsinthemidrangeofascaletoavoidextremes给产品打分偏中等，以避免极端,FactorsInfluencingSensoryMeasurement影响感官测定的因素,17,Motivation动力Affectssensoryperception.Ferestedpanelistisalwaysmoreefficientandreliable.动力会影响感官知觉。比如感兴趣的品尝小组成员总会更有效、更可靠。,FactorsInfluencingSensoryMeasurement影响感官测定的因素,18,ControlsForSensoryTesting对感官测试的控制,EnvironmentControls环境的控制PanelistControls品评小组的控制,19,EnvironmentControls环境的控制,PanelBoothTestingArea品评单间的测试区域Sensoryevaluationofproducts产品的感官品评DescriptiveEvaluation6-LikeSlightly有点喜欢;2-DislikeVeryMuch很不喜欢;7-LikeModerately喜欢;3-DislikeModerately不喜欢;8-LikeVeryMuch很喜欢;4-DislikeSlightly有点不喜欢;9-LikeExtremely非常喜欢5-NeitherLikeNorDislike;既不喜欢也不讨厌,Hedonic/Preferencetests喜好测试,35,三角测试TriangleTest姓名(Name):P18_部门(Department):_您将品尝到3个样品。两个是同样的，一个是不同的。Youhavebeengiventhreesamples.Twoofthesesamplesareidentical,oneisdifferent.请集中注意力，依次品尝这些样品，区分它们的不同之处：Pleasetastethesesamplesintheordergivenbelowinconcentratingyourattentiononthedifferenceinflavour:圈出与其他两个不同的样品号Circlethenumberofthedifferentsample.837911586标出它们之间的差别大小程度Indicatethedegreeofdifferenceinflavourbetweentheidenticalsamplesandthedifferentone.评注：Comments不同的样品：Differentsample_相同的样品：Identicalsamples_,Discriminativetests辨别测试,36,对比测试Duo-TrioTest姓名(Name):_部门(Department):_我们会给您一个标为“R”的参照样品和另外两个样品。Youhavebeengivenareferencesample“R”andtwocodedsamples.请先品尝样品“R”，然后再品尝其他两个。在后两个样品中选出您认为与“R”相同的样品。Pleasesmellandtastethereferencesample“R”first,followedbythetwocodedsamples.Indicatewhichofthetwocodedsamplesisidenticaltothereferencesample“R”.如果您认为两个样品与“R”都很相似，您必须在其中猜选一个。Ifnodifferenceisapparentbetweenthetwounknownsamples,youmustguess.可以允许重复品尝Retastingisallowed.圈出您认为与参照样品相同的样品号Circlethenumberoftheidenticalsample.278543评注：Comments278543_,Discriminativetests辨别测试,37,DIFFERENCEFROMCONTROLTEST五选二测试TWOOUTOFFIVETEST姓名(Name):P20_部门(Department):_我们会给您五个样品.其中两个是同样的,而另三个相同成为一组.Youhavebeengivenfivesamples.Twoofthesefivesamplesbelongtooneset;theotherthreebelongtoanotherset.请选择两个相同的样品,在这两个样品编号边打上X记号IdentifythetwosampleswhichbelongtogetherbyplacinganXafterthecodenumber.同时请在评语栏里填上作相应评价Pleasecommentaccordingly.编号CODE_评语COMMENTS:Twosamplesgroup_Threesamplesgroup_,Discriminativetests辨别测试,38,排序测试RankingTest姓名(Name):_部门(Department):_您将品尝到不同甜味强度的三个样品Youhavebeengiventhreesamplesofdifferentsweetnessintensity.请闻其香味，尝其味，并回答下列问题Pleasesmellandtastethesesamplesandanswerthefollowingquestion:399525833按其甜味强度依次排列Rankthesethreeproductsinascendingorderoftheirsweetness:No.1_No.2_No.3_(No.1为甜度最低，No.3为甜度最强)(WithNo.1oftheleastsweetnessandNo.3ofthehighestsweetness)评注：Comments_,Discriminativetests辨别测试,39,打分测试ScalingTest姓名(Name):_部门(Department):_产品(Product):Milkpowder(4)UtilisationoftheCATEGORYscaleSamples:987SWEET:0123456378SWEET:0123456249SWEET:0123456527SWEET:01234560.Absence1.JustDetectable2.Weak3.Moderate4.SlightlyStrong5.Strong6.VeryStrong,Discriminativetests辨别测试,40,打分测试ScalingTest姓名(Name):_部门(Department):_IntensityratingscalewiththeutilisationofDifference.PleaserateaccordingtothereferenceRef.A:010Ref.B:010Samples:010268010457010176010534AbsentModerateVeryIntense,Discriminativetests辨别测试,41,DIFFERENCEFROMCONTROLTESTName:_Date:3/11/01_TypeofSample:*Instructions:.Youhavereceived4samples(3-digitcoded)andacontrolsamplemarked“R”.Tastethecontrolsamplemarked“R”first.Thentastethetestsamplemarked“XXX”intheindicatedsequenceorder.AssesstheoverallsensorydifferencesbetweenthetwosamplesusingthescaleBelow.Commentonthedifferences.012345678910NoModerateExtremeDiffDiff.RememberthataDuplicateControlisthesamplesomeofthetime.*CodeDegreeofDifferenceCommentsonDifference(Strength/Profileetc.)_732_581_463_694_,Discriminativetests辨别测试,42,姓名(Name):_部门(Department):_您将品尝到7种奶粉的样品,请闻其香，尝其味，并描述其口味YouhavebeengivensevenMilkpowderproducts.Pleasesmellandtastethesamplesandtrytodescribetheperceivedtaste.确认您是否能感觉出下列描述，若不能，请将此描述此划去，若您想到另外的描述，请添加Confirmifyoucanfeeltheselisteddescriptionsinthefollowingprod