ISO 13301:2002 感观分析 方法学-通过3种备择强制选择程序测定气味,香味,味道测定极限导则

标准编号：ISO 13301:2002

中文名称：感观分析 方法学-通过3种备择强制选择程序测定气味,香味,味道测定极限导则

英文名称：Sensory analysis — Methodology — General guidance for measuring odour, flavour and taste detection thresholds by a three-alternative forced-choice (3-AFC) procedure

发布日期：2002-09

标准范围

ISO 13301提供了以下方面的指导:通过3-AFC(三种替代强制选择)程序获得关于引起对气味、风味和味道的反应的化学刺激的检测的数据；处理数据以估计阈值及其误差界限的值，以及与刺激的检测相关的其他统计数据。通常，程序将以以下两种模式之一使用:评估员对特定刺激敏感性的调查；化学物质刺激化学感受力的研究。（尽管实验可以包括两种模式。）第一模式的实例包括研究个体或特定个体群体之间的敏感性差异以及年龄、性别、生理状况、疾病、药物施用和环境条件对敏感性的影响。后一种模式的示例包括:风味化学研究和特定化学物质对食品风味的影响；如果环境中存在化学品，则根据其对人类的影响对其进行分类；化学物质的分子结构与兴奋剂能力的关系研究；气体流出物以及水、食品和饮料的质量保证；嗅觉机制的研究。

ISO 13301 provides guidance on:

• obtaining data on the detection of chemical stimuli that evoke responses to odour, flavour and taste by a 3-AFC (three alternative forced choice) procedure;
• the processing of the data to estimate the value of a threshold and its error bounds, and other statistics related to the detection of the stimulus.

Typically the procedures will be used in one of the following two modes:

• investigation of the sensitivity of assessors to specific stimuli;
• investigation of the ability of a chemical substance to stimulate the chemoreceptive senses.

(Although experiments may encompass both modes.)Examples of the first mode include studies of the differences among individuals or specified populations of individuals in sensitivities and of the effects of age, gender, physiological condition, disease, administration of drugs, and ambient conditions on sensitivity. Examples of the latter mode include:

• studies in flavour chemistry and the impact of specified chemicals on the flavour of foods;
• classification of chemicals, if present in the environment, for their impact on humans;
• studies on the relationship of molecular structure to capacity of a chemical to act as a stimulant;
• quality assurance of gaseous effluents and of water, foods and beverages;
• studies in the mechanism of olfaction.

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