ASTM E2610-2008 Standard Test Method for Sensory Analysis&x2014 Duo-Trio Test《感官分析方法二、三点检验的标准试验方法》.pdf
《ASTM E2610-2008 Standard Test Method for Sensory Analysis&x2014 Duo-Trio Test《感官分析方法二、三点检验的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM E2610-2008 Standard Test Method for Sensory Analysis&x2014 Duo-Trio Test《感官分析方法二、三点检验的标准试验方法》.pdf(8页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: E 2610 08Standard Test Method forSensory AnalysisDuo-Trio Test1This standard is issued under the fixed designation E 2610; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parenthe
2、ses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers a procedure for determiningwhether a perceptible sensory difference exists betweensamples of two products.1.2 This test method a
3、pplies whether a difference may existin a single sensory attribute or in several.1.3 This test method is applicable when the nature of thedifference between the samples is unknown. It does notdetermine the size or the direction of the difference. Theattribute(s) responsible for the difference are no
4、t identified.1.4 Compared to the triangle test, the duo-trio test isstatistically less efficient, but easier to perform by the asses-sors. For details on how the duo-trio test compares to otherthree-sample tests, see Refs (1-4).21.5 This test method is applicable only if the products arehomogeneous.
5、 If two samples of the same product can often bedistinguished, then another method, for example, descriptiveanalysis, may be more appropriate.1.6 This test method is applicable only when the productsdo not cause excessive sensory fatigue, carryover or adapta-tion.1.7 This standard does not purport t
6、o address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:3E 253 Te
7、rminology Relating to Sensory Evaluation of Ma-terials and ProductsE 456 Terminology Relating to Quality and StatisticsE 1871 Guide for Serving Protocol for Sensory Evaluationof Foods and BeveragesE 1885 Test Method for Sensory AnalysisTriangle Test2.2 ISO Standards:4ISO 4120 Sensory AnalysisMethodo
8、logyTriangle TestISO 10399 Sensory AnalysisMethodologyDuo-TrioTest3. Terminology3.1 DefinitionsFor definition of terms relating to sensoryanalysis, see Terminology E 253, and for terms relating tostatistics, see Terminology E 456.3.2 Definitions of Terms Specific to This Standard:3.2.1 a (alpha) ris
9、kprobability of concluding that a per-ceptible difference exists when, in reality, one does not. (Alsoknown as Type I Error or significance level.)3.2.2 b (beta) riskprobability of concluding that no per-ceptible difference exists when, in reality, one does. (Alsoknown as Type II Error.)3.2.3 pcprob
10、ability of a correct response.3.2.4 pd(proportion of discriminators)proportion of thepopulation represented by the assessors that can distinguishbetween the two products.3.2.5 productmaterial to be evaluated.3.2.6 sampleunit of product prepared, presented, andevaluated in the test.3.2.7 sensitivityg
11、eneral term used to summarize the per-formance characteristics of the test. The sensitivity of the testis rigorously defined, in statistical terms, by the values selectedfor a, b, and pd.3.2.8 triadthree samples given to an assessor in theduo-trio test; one sample is labeled as a reference the other
12、 twosamples are labeled with different codes. One of the codedsamples is the same product as the reference. The other codedsample is different.4. Summary of Test Method4.1 Clearly define the test objective in writing.4.2 Choose the number of assessors based on the level ofsensitivity desired for the
13、 test. The sensitivity of the test is, inpart, a function of two competing risks: the risk of declaringthe samples different when they are not (that is, a-risk) and therisk of not declaring the samples different when they are (that1This test method is under the jurisdiction of ASTM Committee E18 on
14、SensoryEvaluation and is the direct responsibility of Subcommittee E18.04 on Fundamen-tals of Sensory.Current edition approved April 15, 2008. Published May 2008.2The boldface numbers in parentheses refer to the list of references at the end ofthis standard.3For referenced ASTM standards, visit the
15、ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.4Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10
16、036, http:/www.ansi.org.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.is, b-risk).Acceptable values of a and b vary depending on thetest objective and should be determined before the test (see forexample Appendix X1 and Appendix X2
17、).4.3 Each assessor receives a triad where one sample islabeled as the reference and the other two samples are labeledwith different codes. The assessors are informed that one of thecoded samples is the same as the reference and that one isdifferent. The assessors report which of the coded samples t
18、heybelieve to be the same as (or different from) the reference.54.4 Results are tallied and significance determined by ref-erence to a statistical table.5. Significance and Use5.1 The test method is effective for the following testobjectives:5.1.1 To determine whether a perceivable difference result
19、sor a perceivable difference does not result, for example, whena change is made in ingredients, processing, packaging, han-dling or storage; or5.1.2 To select, train and monitor assessors.5.2 The test method itself does not change whether thepurpose of the duo-trio test is to determine that two prod
20、uctsare perceivably different versus that the products are notperceivably different. Only the selected values of pd, a, and bchange. If the objective of the test is to determine if there is aperceivable difference between two products, then the valueselected for a is typically smaller than the value
21、 selected for b.If the objective is to determine if the two products aresufficiently similar to be used interchangeably, then the valueselected for b is typically smaller than the value selected for aand the value of pdis selected to define “sufficiently similar.”5.3 The test method may change based
22、 on the test objectiveor the assessors familiarity with the product. The balanced-reference technique (see 9.1.1) typically is used when neitherproduct is more familiar than the other. The constant-referencetechnique (see 9.1.2) frequently is used when one product is acontrol/current product or is f
23、amiliar to the assessors.6. Apparatus6.1 Carry out the test under conditions that prevent contactbetween assessors until the evaluations have been completed,for example, using booths that comply with Ref (5).6.2 Sample preparation and serving sizes should complywith Guide E 1871. See Refs (6) or (7)
24、.7. Assessors7.1 All assessors must be familiar with the mechanics of theduo-trio test (the format, the task, and the procedure ofevaluation). Experience and familiarity with the product andtest method may increase the sensitivity of an assessor and maytherefore increase the likelihood of finding a
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
下载文档到电脑,查找使用更方便
5000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- ASTME26102008STANDARDTESTMETHODFORSENSORYANALYSISX2014DUOTRIOTEST 感官 分析 方法 检验 标准 试验 PDF

链接地址:http://www.mydoc123.com/p-531542.html