EVALUATION OF PANELIST PERFORMANCE IN DESCRIPTIVE PROFILING OF RANCID SAUSAGES: A MULTIVARIATE STUDY |
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Authors: | FIORELLA. SINESIO,EINAR. RISVIK,MARIT. RØ DBOTTEN |
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Affiliation: | Instituto Nazionale delia Nutrizione Via Ardeatina, 546, 00100 Roma;MATFORSK, Norwegian Food Research Institute Osloveien 1, N-1430 Ås;MATFORSK, Norwegian Food Research Institute Osloveien 1, N-1430 Ås |
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Abstract: | This paper illustrates an application of principal component analysis (PCA), partial least squares regression (PLS) and generalized procrustes analysis (GPA) to evaluate the ability of a trained group of assessors to perceive rancidity in foods. PCA and regression PLS were utilized to determine to which extent sensory attributes capture the information perceived by a trained sensory panel, and if this can be developed into a predictive model for rancidity in sausages. The data were submitted to a GPA to obtain a map of the products for each subject as compared with a consensus products map. Assessors plots for the sensory attributes were also obtained to reveal the dissimilarities between panelists and to explore clustering. |
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