ISO 16820:2004 感官分析.方法学.顺序分析

标准编号：ISO 16820:2004

中文名称：感官分析.方法学.顺序分析

英文名称：Sensory analysis — Methodology — Sequential analysis

发布日期：2004-06

标准范围

ISO 16820:2004描述了一种对强迫选择感官辨别测试数据进行统计分析的程序，例如三角形、Duo-Trio、3-AFC、2-AFC，在每次测试辨别测试后，可以决定停止测试并声明差异、停止测试并声明无差异，或继续测试。与使用预定数量评估的传统方法相比，序贯方法通常允许在更少的歧视测试试验后做出决定。该方法对于a）确定当（例如）成分、加工、包装、处理或储存发生变化时，会产生可感知差异或不会产生可感知差异是有效的；或b）用于选择、培训和监督评估员。

ISO 16820:2004 describes a procedure for statistically analysing data from forced-choice sensory discrimination tests, such as the Triangle, Duo-Trio, 3-AFC, 2-AFC, in which after every trial of the discrimination test the decision can be made to stop testing and declare a difference, to stop testing and declare no difference, or to continue testing.The sequential method often allows for a decision to be made after fewer trials of the discrimination test than would be required by conventional approaches that use predetermined numbers of assessments.The method is effective for a) determining that either a perceptible difference results, or a perceptible difference does not result when, for example, a change is made in ingredients, processing, packaging, handling or storage; or b) for selecting, training and monitoring assessors.

标准预览图