Methodology problems of the industrial preference mapping
2012
Losó, V. | Toth, A. | Gere, A. | Heszberger, J. | Székely, G. | Kókai, Z. | Sipos, L.
According to international studies the consumer preference of apple varieties is defined by the flavour and texture and the consumers’ opinion about the heavily sour character, the mushy texture and the barely chewable peel is negative. However, the preference level and nutritional values of the apple juices are determined by the variety used, the maturity level and the processing of the fruits. In our study we conducted the external and internal preference mapping of two apple juices with 100% fruit content according to the industrial practice. It propounded several questions about the method of the preference mapping which were the following: product specific training of the assessors, panel performance monitoring, number of samples, representativity, scale use and marking, reasons of the singular matrix, segmentation method, segmentation criterion, power of the paired post-hoc analysis, number of the principal components (PC’s), etc. Finding the answers of the questions above it is possible to establish a good preference mapping practice.
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