Table 5 Amount of polyphenolic compounds identified in the dichloromethane extract of Melissa officinalis leaves
No. | Polyphenolic compound | Retention time (min) | Amount (g/kg dry weight) |
|---|---|---|---|
I | 3,4-dihydroxyphenyl lactic acid | 10.26 | 0.04 |
XIII | o-Tyrosol | 17.31 | 0.14 |
III | Caffeic acid | 19.82 | 0.06 |
XIV | Methyl hydroxyphenyl acetic acid | 22.41 | 0.08 |
VI | Methyl caffeate | 35.60 | 0.16 |
VII | t-Rosmarinic acid | 36.73 | 1.69 |
XV | c-Rosmarinic acid | 36.99 | 0.55 |
VIII | Isolithospermic acid | 39.84 | 0.01 |
X | Lithospermic acid | 41.26 | 0.07 |
XI | Methyl isolithospermate | 42.49 | 0.01 |
XII | Methyl lithospermate | 44.04 | 0.05 |
Total (g/kg) | 2.84 | ||