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The aim of the present study was evaluation of the yield and quality of herb in five wild growing populations of stinging nettle. The dioecism of this plant was taken under consideration. Herb was harvested at the beginning of blooming, at the full blooming stage and at the end of vegetation. Fresh and dry mass of herb, as well as the content of chlorophyll, flavonoids and phenolic acids in dry raw...
Eight accessions of St. John's wort (Hypericum perforatum L.) originating from natural sites in Lithuania were investigated ex situ. The content and composition of flavonoids and phenolic acids, as well as the contents of hypericin and pseudohypericin in the herb were determined. The total contents of flavonoids and phenolic acids ranged from 2.42% to 3.10% and from 1.16% to 3.17%, respectively. The...
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