In two surveys (600 consumers) (1) the importance of color on a consumer's decision to buy strawberry nectar and jam, (2) the consumer's color acceptance of strawberry nectars from puree and adequate products containing colorants from the market as well as specially prepared samples and (3) the associated attributes to these samples were studied. In addition, a test was carried out in order to (4) characterize strawberry color and its changes during storage sufficiently with one value. Color has a big impact on a consumer's decision to buy strawberry nectars as well as strawberry jam. Neither gender nor age or consumption habits of consumers had a significant impact on color acceptance. For color assessment, an “acceptance factor” (AF) was calculated from colorimetric data that provides processors the prediction of color quality of nectars from puree. Nectars with an AF lower than 0.4 were not accepted, whereas nectars with an AF higher than about 0.7 were described as excellent. PRACTICAL APPLICATIONS The results of this study show the first time that it is possible to characterize the color of strawberry products by means of the calculation of an “acceptance factor” (AF = a*/h), and to predict whether the color will be accepted from the consumers or not (excellent [AF > 0.7], acceptable [AF > 0.4] or not acceptable [AF < 0.4]). This data could be used as basis for the production of new strawberry nectars (containing colorants) and the assessment for the stability and shelf life of strawberry products from puree.
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