Table 4 Amount of polyphenolic compounds identified in the ethanol extract of Melissa officinalis leaves
No. | Polyphenolic compound | Retention time (min) | Amount (g/kg dry weight) |
|---|---|---|---|
I | 3,4-Dihydroxyphenyl lactic acid | 10.04 | 0.50 |
II | 3,4-DHBA | 12.56 | 0.09 |
III | Caffeic acid | 21.94 | 0.34 |
IV | Luteolin-7-O-glucoside | 22.03 | 0.19 |
V | Rosmarinic acid glucoside | 32.98 | 1.22 |
VI | Methyl caffeate | 36.85 | 0.09 |
VII | Rosmarinic acid | 38.11 | 45.51 |
VIII | Isolithospermic acid | 41.1 | 3.12 |
IX | Methyl rosmarinate | 41.69 | 0.26 |
X | Lithospermic acid | 42.48 | 8.78 |
XI | Methyl isolithospermate | 43.49 | 0.71 |
XII | Methyl lithospermate | 44.94 | 1.03 |
Total | 61.84 | ||