【英文标准名称】:StandardGuideforSensoryEvaluationMethodstoDeterminetheSensoryShelfLifeofConsumerProducts
【原文标准名称】:测定消费者产品感官品质保存期的感官评定方法标准指南
【标准号】:ASTME2454-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E18.05
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:消费者;评定;感官分析;储存期限
【英文主题词】:flavorstabilitytesting;sensorychangesduringstorage;sensorychangesovertime;shelflifetesting
【摘要】:1.1Thisguideprovidesappropriatesensorytestingapproachesandpossibledecisioncriteriaforestablishingsensoryshelflifeofconsumerproducts.Itdescribesresearchconsiderationsincluding:productselectionandhandling,appropriateapplicationofvarioussensorytestmethods,selectionoftestintervals,anddataanalysistechniquesforthedeterminationofaproductsshelflifeend-point.Assuch,thisdocumentcoversshelflifestudiesdesignedtoidentifythesensoryend-pointofaproductslifetomanagebusinessriskandmeetbusinessneeds.Thisguidewillfocusonthepracticalconsiderationsandapproaches,risks,andcriteriathatmustbeconsideredindesigning,executing,andinterpretingshelfliferesults.1.2Sensoryshelflifeisthetimeperiodduringwhichtheproductssensorycharacteristicsandperformanceareasintendedbythemanufacturer.Theproductisconsumableorusableduringthisperiod,providingtheend-userwiththeintendedsensorycharacteristics,performance,andbenefits.Afterthisperiod,however,theproducthascharacteristicsorattributesthatarenotasintended,oritdoesnotperformthesamefunctionsasfreshproductsorthoseselectedbeforetheendofshelflife.1.3Thegoalofallshelflifedeterminationistoestimatethetimeatwhichaconsumerproductisnolongerusable,unfitforconsumption,ornolongerhastheintendedsensorycharacteristics.Thedeterminationofasensoryend-pointisafunctionofthecriteriaselected,thetestmethodused,andsamplingrisk.Thethreefollowingtestmethodsaremostcommonlyused:(1)discrimination,(2)descriptive,and(3)affective.Researchershavetoselectcriteriaandmethodsthatbestsuitthebusinessrisksassociatedwiththeselectionofafinalshelflifeendpoint.1.4Researchtechniquesdesignedtoidentifythecausesofsensoryshelflifechangesortodeveloppredictivemodelsofshelflifearebeyondthescopeofthisdocument.Theseincludetheapplicationofregressionanalysistodevelopstatisticalmodelsdesignedtopredictsensoryshelflife,studiesthatassesstheimpactofvariousstorageconditions,packagingmaterials,orproductformulationsontheshelflifeofproducts,andstudiesdesignedtoidentifythecausesofchangesinproductattributesovertime.However,manyoftheresearchmethods,experimentaldesignconsiderations,anddataanalysistechniquesdiscussedinthisdocumentcanbeappliedtotheseothertypesofshelflife-relatedresearch.1.5Thisguideisnotintendedtoprovideadetaileddescriptionofhowtoconductreliablesensorytesting.Itassumesknowledgeofbasicsensoryandstatisticalanalysistechniques,focusinginsteadonspecialconsiderationsforthespecificapplicationofsensorytestingmethodtoshelflifedetermination.
【中国标准分类号】:A12
【国际标准分类号】:03_080_30
【页数】:9P.;A4
【正文语种】:


【英文标准名称】:TestMethodforSieveAnalysisofFineandCoarseAggregates
【原文标准名称】:细集料及粗集料筛分试验方法
【标准号】:ASTMC136-1992
【标准状态】:作废
【国别】:美国
【发布日期】:1992
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:筛选(大小);材料;集料;粗集料;混凝土;建筑;细集料;施工材料
【英文主题词】:aggregates;screening(sizing);construction;constructionmaterials;fineaggregates;coarseaggregates;concretes;materials
【摘要】:
【中国标准分类号】:Q13
【国际标准分类号】:19_120;91_100_30
【页数】:4P;A4
【正文语种】:英语