BS EN ISO 10399-2010 感官分析.方法论.对比试验法

标准号：BS EN ISO 10399-2010
中文标准名称：感官分析.方法论.对比试验法
英文标准名称：Sensory analysis - Methodology - Duo-trio test
标准类型：X04
发布日期：2004/7/2 12:00:00
实施日期：2004/7/2 12:00:00
中国标准分类号：X04
国际标准分类号：67.240
适用范围：This International Standard describes a procedure for determining whether a perceptible sensory difference orsimilarity exists between samples of two products. The method is a forced-choice procedure. The method isapplicable whether a difference exists in a single sensory attribute or in several attributes.The method is statistically less efficient than the triangle test (described in ISO 4120) but is easier to performby the assessors.The method is applicable even when the nature of the difference is unknown [i.e. it determines neither the sizenor the direction of difference between samples, nor is there any indication of the attribute(s) responsible forthe difference]. The method is applicable only if the products are fairly homogeneous.The method is effective fora) 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 ismade in ingredients, processing, packaging, handling or storage;b) or 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 fromregular production), and? the balanced-reference technique, used when one product is not more familiar than the other.