ISO 4120:2004 知觉分析 方法学 三角形试验

标准编号：ISO 4120:2004

中文名称：知觉分析 方法学 三角形试验

英文名称：Sensory analysis — Methodology — Triangle test

发布日期：2004-06

标准范围

ISO 4120:2004描述了确定两种产品样品之间是否存在可感知的感官差异或相似性的程序。该方法是一种强制选择过程。该方法适用于单个感官属性或多个属性是否存在差异。该方法在统计学上比duo-trio测试更有效，但对具有强烈残留和/或余味的产品的使用有限。即使差异的性质未知（即它既不确定样本之间差异的大小或方向，也不确定导致差异的属性），该方法也适用。该方法仅适用于产品相当同质的情况。该方法适用于a）确定当（例如）配料、加工、包装、搬运或储存发生变化时，可感知差异是否会产生（差异的三角测试），或可感知差异是否不会产生（相似性的三角测试）；b） 或用于选择、培训和监督评估员。

ISO 4120:2004 describes a procedure for determining whether a perceptible sensory difference or similarity exists between samples of two products. The method is a forced-choice procedure. The method applies whether a difference can exist in a single sensory attribute or in several attributes.The method is statistically more efficient than the duo-trio test, but has limited use with products that exhibit strong carryover and/or lingering flavours.The method is applicable even when the nature of the difference is unknown (i.e. it determines neither the size nor the direction of difference between samples, nor is there any indication of the attributes responsible for the difference). The method is applicable only if the products are fairly homogeneous.The method is effective for a) determining that either a perceptible difference results (triangle testing for difference), or a perceptible difference does not result (triangle testing for similarity) when, for example, a change is made in ingredients, processing, packaging, handling or storage; b) or for selecting, training and monitoring assessors.

标准预览图