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Canonical correlation based consonance test for sensory panels of a Brazilian cheese
11th Global Summit on Food & Beverages
September 22-24, 2016 Las Vegas, USA
Eric B Ferreira
Federal University of Alfenas, Brazil
Posters & Accepted Abstracts: J Food Process Technol
Abstract:
Minas Padrão is a kind of Brazilian cheese very popular in the country, especially in the southeast of the country. An experiment was performed regarding the addition of inulin (prebiotic) in doses 0, 2% and 4%; combined with 4 ripening times 0, 15, 30 and 45 days; yielding 12 treatments. Then, those treatments were evaluated according to 4 sensory attributes (appearance, color, flavor and texture) by a trained panel of 5 assessors. Such training longed only for 4 one-hour sessions. A test based on canonical correlations was proposed for assessing the panel consonance. This test was performed in the panel scores setting the null hypothesis at 75% of consonance or more. This was rejected (p<0.05) and then each attribute was verified. An asymptotic test for Eigen values was performed revealing only one consonant attribute, the appearance. For color, flavor and texture specific retraining should be done with assessors 1, 2 and 5.