Fig. 4: Pearson correlation matrix between differential metabolites and antiglycation and anti-inflammatory activities.

The color scale ranges from −1 (blue, strong negative correlation) to +1 (red, strong positive correlation). Circle sizes represent the absolute correlation strengths based on each correlation coefficient. Differential metabolite names are written in red (if increased) and black (if decreased) based on their relative levels following fermentation of licorice by L. mesenteroides.