Accumulation of polyphenolic acids in the herb of five populations of Hypericum genus
Department of Vegetable and Medicinal Plants
Warsaw Agricultural University
Nowoursynowska 166, 02-787 Warsaw, Poland
The aim of this study was to evaluate differences in the accumulation of
polyphenolic acids in the herb of three Hypericum species. The
research was carried out in 2000 and 2001 on one- and two-year-old plants.
The object of the study were 5 populations: two of Hypericum perforatum
L., two of Hypericum elegans Steph., and one of Hypericum
maculatum Crantz. Three times of harvesting were applied (vegetative
stage, beginning of blooming, and full blooming). The raw material of
investigated populations of Hypericum genus significantly differed
in the total content of polyphenolic acids. In the second year of plant
vegetation a higher content of polyphenolic acids (1.3-3.6%) in comparison
with the first year of vegetation (1.0-2.5%) was observed. The composition
of polyphenolic acid fractions from two-year-old plants harvested at
the beginning of the blooming stage was determined. Among 15 identified polyphenolic
acids the main compounds were: p-hydroxybenzoic acid, and p-coumaric acid.
Osińska E., 2003. Accumulation of polyphenolic acids in the herb of five
populations of Hypericum genus. Folia Horticulturae 15/1: 149-155.