Fig. 1
From: An improved microscale method for extraction of phenolic acids from maize
Box plot comparison of total phenolic acids in maize seeds. a Total free phenolic acids. b Total bound phenolic acids. c Coefficient of variation of total free phenolic acid quantification; d coefficient of variation of total bound phenolic acids. Horizontal line represents the median of total values. Vertical line represents the maximum and minimum value. Box covers the 75 and 25 percentiles. [+Results are expressed as mg of gallic acid equivalent per 100 g of dry weight (mg GAE/100 g dw). Significant differences between the methods were established by ANOVA (α = 0.05), ns no significance, * p < 0.05; ** p < 0.001; *** p < 0.001]