Figure 4

Heatmap of the Pearson correlation coefficient matrix for the traits studied across the 20 species of the Lamiaceae family. The abbreviations used are as follows: TPC Total Phenol Content, TFC Total Flavonoid Content, AAC Ascorbic Acid Content, TTC Total Tannin Content, DPPH antioxidant activity based on 2,2-diphenyl-1-picrylhydrazyl assay, FRAP antioxidant activity based on ferric reducing antioxidant power assay.