Statistical data analysis
Quality data from the three replications
were subjected to analysis of variance (ANOVA)
and Duncan’s multiple range test for determination
of differences between the samples at the 5% level
(P < 0.05) using SPSS 16.0 (SPSS INC., Chicago,
USA). All data were also analyzed by principle
component analysis (PCA) performed by
Unscrambler 9.8 (Camo, Oslo, Norway) and
cluster analysis performed by SPSS 16.0.