Analysis of benzoic and cinnamic acid derivatives of some medicinal plants in Serbia
2013
Natural phenolics, which are ubiquitously distributed in plants, have been
reported as functional factors in phytotherapy. We have examined phenolic
compounds in the leaves and inflorescences of five significant medicinal
plants of different plant families: Salvia officinalis (Lamiaceae); Achillea
clypeolata (Asteraceae); Nymphaea alba (Nymphaeaceae); Rumex acetosella
(Polygonaceae) and Allium ursinum (Alliaceae). The examined species were rich
in total phenolics (up to 30.88 mg/g dry weight). According to their total
phenolics contents, the plants can be arranged in the following order: A.
clypeolata>N. alba>S. officinalis>R. acetosella>A. ursinum. Free phenolics
prevailed in all species in comparison to the bound forms (63.72-82.68% of
total phenolics). The highest content of total free phenolics was measured in
the tissues of A. clypeolata and N. alba, and the lowest in A. ursinum. Five
phenolic acids were isolated and measured. p-Coumaric and ferulic acids as
derivatives of cinnamic acid prevailed in the leaves of R. acetosella and A.
ursinum (up to 4.81%). [Projekat Ministarstva nauke Republike Srbije, br.
173018]
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