Statistical analysis
The data reported was obtained from triplicate measurements of samples.
The results were analyzed by one–way analysis of variance (ANOVA) using
SAS 9.0 (SAS Inst., Cary, NC, USA), and p < 0.05 was
considered statistically significant. In addition, the data were
analyzed using Principal Component Analysis (PCA) combined with VARIMAX
rotation. XLSTAT software (version 2010.2.01, Addinsoft Deutschland,
Andernach, Germany) was used for PCA analysis.