Statistical analysis All data are expressed as a mean of three analyses. A linear regression model was applied to obtain equations for standards, gallic acid and quercetin. The total polyphenol and flavonoid contents were calculated by using linear equation of standards. The Duncan multiple-range test was applied to compare the significance differences of the total polyphenol and flavonoid contents in the extracts at p≤0.05. The IC50 values of the antioxidant and cytotoxic activities of the extracts were calculated by using an appropriate linear or non-linear regression equation obtained from the percentage activity of each extract at various concentrations with the F-statistic at p≤0.05. All the analysis was done using statistical software R version 3.1.2