2.1. Statistics
Results of sensory, instrumental and chemical evaluations of packaged pork chops were processed using
descriptive statistics (MS Excel). Linear regression and multivariate regression were used to examine relationships among chemical parameters to the value of sensory estimations of color during storage periods. For each variable, regression coefficients were calculated, as well as their statistical significance. The effect of each predictor (chemical and instrumental color parameters) on the dependent variable (sensory evaluation of meat surface and cut color) was estimated. Results of descriptive statistics were expressed as a mean value±standard deviation (SD).Statistical significance of means between data sets determined using ANOVA and post-hoc Tukey`s test. Statistical analysis was performed by the JMP 10 software package (SAS Institute, USA).