1、Designation:E245405(Reapproved 2011)Standard Guide forSensory Evaluation Methods to Determine the SensoryShelf Life of Consumer Products1This standard is issued under the fixed designation E2454;the number immediately following the designation indicates the year oforiginal adoption or,in the case of
2、 revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This guide provides appropriate sensory testing ap-proaches and possible decision criteria for establ
3、ishing sensoryshelf life of consumer products.It describes research consid-erations including:product selection and handling,appropriateapplication of various sensory test methods,selection of testintervals,and data analysis techniques for the determination ofa products shelf life end-point.As such,
4、this document coversshelf life studies designed to identify the sensory end-point ofa products life to manage business risk and meet businessneeds.This guide will focus on the practical considerations andapproaches,risks,and criteria that must be considered indesigning,executing,and interpreting she
5、lf life results.1.2 Sensory shelf life is the time period during which theproducts sensory characteristics and performance are as in-tended by the manufacturer.The product is consumable orusable during this period,providing the end-user with theintended sensory characteristics,performance,and benefi
6、ts.After this period,however,the product has characteristics orattributes that are not as intended,or it does not perform thesame functions as fresh products or those selected before theend of shelf life.1.3 The goal of all shelf life determination is to estimate thetime at which a consumer product
7、is no longer usable,unfit forconsumption,or no longer has the intended sensory character-istics.The determination of a sensory end-point is a function ofthe criteria selected,the test method used,and sampling risk.The three following test methods are most commonly used:(1)discrimination,(2)descripti
8、ve,and(3)affective.Researchershave to select criteria and methods that best suit the businessrisks associated with the selection of a final shelf life end point.1.4 Research techniques designed to identify the causes ofsensory shelf life changes or to develop predictive models ofshelf life are beyon
9、d the scope of this document.These includethe application of regression analysis to develop statisticalmodels designed to predict sensory shelf life,studies thatassess the impact of various storage conditions,packagingmaterials,or product formulations on the shelf life of products,and studies design
10、ed to identify the causes of changes inproduct attributes over time.However,many of the researchmethods,experimental design considerations,and data analysistechniques discussed in this document can be applied to theseother types of shelf life-related research.1.5 This guide is not intended to provid
11、e a detailed descrip-tion of how to conduct reliable sensory testing.It assumesknowledge of basic sensory and statistical analysis techniques,focusing instead on special considerations for the specificapplication of sensory testing method to shelf life determina-tion.2.Referenced Documents2.1 ASTM S
12、tandards:2E253 Terminology Relating to Sensory Evaluation of Mate-rials and Products2.2 ASTM Manuals:3MNL 13 Descriptive Analysis TestingMNL 26 Sensory Testing MethodsMNL 30 Relating Consumer,Descriptive,and LaboratoryData to Better Understand Consumer Responses3.Terminology3.1 Definitions of Terms
13、Specific to This Standard:3.1.1 accelerated storage/agingsubjecting a product toextreme or stressed conditions,such as elevated temperaturesor humidity,to create changes in product characteristics thatare assumed to be related to aging the product.3.1.2 control parameters for sensory shelf life dete
14、rmination(known as“control”)specific product or data set(based onprevious sensory research)designated as the one to which thedata from stored products are to be compared(see Section 6).1This guide is under the jurisdiction of ASTM Committee E18 on SensoryEvaluation and is the direct responsibility o
15、f Subcommittee E18.05 on SensoryApplications-General.Current edition approved Aug.1,2011.Published August 2011.Originallyapproved in 2005.Last previous edition approved in 2005 as E245405.DOI:10.1520/E2454-05R11.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Custom
16、er Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from ASTM International Headquarters,100 Barr Harbor Drive,POBox C700,West Conshohocken,PA 194282959.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.1.3 controlled conditionsset of environmental param-eters(temperature,humidity,light,oxygen,and so forth)thatare maintained and mo
