Fig. 2

Concentration (mean ± SD) and pairwise comparisons of the mean BPA concentration between different doogh brands - for three storage temperatures (a: 4 °C, b: 25 °C, c: 45 °C). *p < 0.05, **p < 0.01, ***p < 0.001, ****p < 0.0001. Error bars represent SD.