2.6 Statistical analysis
Data collected from the determination were subjected to one-way analysis of variance (ANOVA) to analyze differences in the tested parameters using SPSS 19.0 (SPSS Inc., Chicago, USA). The Duncan’s Multiple Range Test (DMRT) at a 5% level of significance was used to test significance of differences between means when F-values were significant. Simple regress analysis was used to quantify the relationships among the response variables. Prior to analysis, data were tested for homogeneity of variance and normality. Figure was accomplished with SigmaPlot 12.0 (Systat Software Inc., London, UK).