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    ISO 13301:2018

    Sensory analysis — Methodology — General guidance for measuring odour, flavour and taste detection thresholds by a three-alternative forced-choice (3-AFC) procedure
    • 발행일 : 2018-04-24
    • 발행기관 : ISO
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분야 ISO/TC 34/SC 12 : Sensory analysis
적용범위

ISO 13301:2018 gives guidelines for

- obtaining data on the detection of stimuli that evoke responses to odour, flavour and taste by a 3-AFC (three-alternative forced-choice) procedure, and

- 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 can 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 for their impact on humans, if present in the environment,

- 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, and

- studies in the mechanism of olfaction.

In both modes, the way in which probability of a correct response changes with intensity of stimulus, i.e. the slope of the dose/response curve, could be an important aspect of the study as well as the threshold value, and the data processing procedures described here provide this information.

The focus of ISO 13301:2018 is on data requirements and on computational procedures. Regarding the validity of the data, the text is restricted to general rules and precautions. It does not differentiate between detection and difference thresholds; fundamentally, the procedures measure a difference threshold because a test sample is compared with a reference sample. Typically, the reference sample is not intended to contain the stimulus under investigation, but the guidelines do not exclude experimental design in which the reference could contain the stimulus, or it might not be known if the reference contains the stimulus. The guidelines do not measure a recognition threshold as defined in ISO 5492. They do not address the standardization of methods of determining air quality as discussed in EN 13725.
국제분류(ICS)코드 67.240 : 관능분석
페이지수 28
Edition 2

이력정보

No. 표준번호 표준명 발행일 상태
1 ISO 13301:2018상세보기 Sensory analysis — Methodology — General guidance for measuring odour, flavour and taste detection thresholds by a three-alternative forced-choice (3-AFC) procedure 2018-04-24 표준
2 ISO 13301:2002상세보기 Sensory analysis — Methodology — General guidance for measuring odour, flavour and taste detection thresholds by a three-alternative forced-choice (3-AFC) procedure 2002-09-26 구판

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