Hedonic preference test

Hedonic preference test Trained or untrained panelists evaluate the coIot, (Meilgaard et al 1991) aroma, flavor, texture, and ovOTall acceptabflity of the products in a senstxy evaluation laboratory. Products are usually evaluated using a nine-point hedonic scale, wha"e 4 like extremely, 0 = neither Uke mx dislike, and -A = dislike extremely. 

Even more importantly, URB597 seems to lack hedonic properties, as it had no effect on two rat models of abuse potential, the conditioned place preference test and the drug discrimination test (Kathuria et al., 2003). Similar results have been recently obtained also in experiments with monkeys (Justinova et al., 2008). 

The brewer and his customer make a subjective assessment of beer flavour each time they taste but for a more objective appraisal it is usually desirable to submit the beer, with suitable controls, to a taste panel. Taste panels may be used to (/) select qualified judges, (//) correlate sensory with chemical and physical measurements, (Hi) study processing effects, maintain quality, evaluate raw material selection, establish storage stability, and reduce costs, (fv) evaluate quality, and (v) determine consumer reaction [Ij. The types of test used include (/) difference tests, (ii) rank order, (Hi) scoring tests, (iv) descriptive tests, (v) hedonic scaling, and (v/) acceptance and preference tests [1]. Difference tests are most commonly used in the brewing industry, the results of which are readily analysed by statistics. Several forms of difference test are used. The A-not-A form of test is perhaps the simplest. Assessors are first familiarized with a standard A and then presented, in a random manner, either with A again or with the comparative sample B. In the paired-comparison test two samples are presented simultaneously (AA, AB, BA, or BB) and assessors report either there is a difference or there is no difference . 

Effective testing/acceptance testing By acceptance testing we mean measuring liking or preference for a product. Preference is that expression of appeal of one product versus another that can be measured directly by comparing two or more products with each other. The nine-point hedonic scale method... 

Methods can be classified as either analytical or affective. Analytical methods are either discriminative or descriptive they provide product analytical information. Affective tests are hedonic or paired preference they provide product liking or preference information. These methods provide different kinds of information and should not be combined, a topic discussed later in this section. These methods are the foundation on which none evaluation has developed. Each provides different kinds of information and none of them is superior to another in terms of sensitivity. 

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