2.11. Statistical analysis
All data were submitted to analysis of variance using the general
linear model of the SPSS 16.01 statistical package (SPSS Ltd., Woking,
Surrey, UK). Analysis of variance was applied by a factorial arrangement
using treatments and storage time as the two factors. Before statistical
analysis, Levene's test was applied to test the homogeneity of the
variances.When the effect of factors was significant, Duncan's multiple
range tests to examine significant differences at each storage interval for
individual treatments were employed. A probability level of P ≤ 0.05
was used in testing the statistical significance of all data.