ISO 10399:2004 感官分析 方法学 两三个一组试验法

标准编号：ISO 10399:2004

中文名称：感官分析 方法学 两三个一组试验法

英文名称：Sensory analysis — Methodology — Duo-trio test

发布日期：2004-06

标准范围

ISO 10399:2004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。无论单个感官属性或多个属性存在差异，该方法都适用。该方法在统计学上不如三角形测试有效，但更容易由评估人员执行。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。该方法对于a）确定可感知的差异是否会导致（duo）是有效的-例如，当成分、加工、包装、处理或储存发生变化时，不会产生明显差异（相似性测试）；或b）用于选择、培训和监督评估员。描述了该方法的两种形式:当一种产品为评估人员所熟悉时（例如，来自常规生产的样品），使用恒定参考技术；当一种产品不比另一种产品更熟悉时，使用平衡参考技术。

ISO 10399:2004 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 is applicable whether a difference exists in a single sensory attribute or in several attributes.The method is statistically less efficient than the triangle test but is easier to perform by the assessors.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 (duo-trio testing for difference), or a perceptible difference does not result (duo-trio testing for similarity) when, for example, a change is made in ingredients, processing, packaging, handling or storage; or b) for selecting, training and monitoring assessors.Two forms of the method are described: the constant-reference technique, used when one product is familiar to the assessors (e.g. a sample from regular production), and the balanced-reference technique, used when one product is not more familiar than the other.

标准预览图