Pearson correlation analysis was performed between the eleven
means of the five sensory attributes of texture and of the five
instrumental tests, using the PASW Statistics 18 software (SPSS
Inc.), because the means follow a Gaussian distribution. In addition,
the same means from the sensory and instrumental analyses
were subjected to Principal Component Analysis (PCA), using the
Statistica 7.0 software (StatSoft, Inc.). For PCA analysis, the sensory
attributes and instrumental tests were fixed in columns (variables)
and the snacks in lines (cases), and the data were standardized before
analysis. The PCA analysis was performed with correlation matrix
and without factor rotation.