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. 2020 Sep 7;76(1-2):55-65.
doi: 10.1515/znc-2020-0149. Print 2021 Jan 27.

Phytochemical characterization of different yarrow species (Achillea sp.) and investigations into their antimicrobial activity

Lysanne Apel  1 , Peter Lorenz  1 , Sabine Urban  2 , Simon Sauer  1 , Otmar Spring  3 , Florian C Stintzing  1 , Dietmar R Kammerer  1
Affiliations

Phytochemical characterization of different yarrow species (Achillea sp.) and investigations into their antimicrobial activity

Lysanne Apel et al. Z Naturforsch C J Biosci. .

Abstract

Various Achillea species are rich in bioactive compounds and are important medicinal plants in phytotherapy. In the present study, Achillea millefolium L., Achillea moschata Wulfen, and Achillea atrata L. were compared with respect to their phenolic profile and antibacterial activity against gram-positive bacteria strains (Staphylococcus, Propionibacterium). Particular focus was given to A. atrata, which has hardly been studied so far. Based on the metabolite profile, A. atrata exhibited more similarities to A. moschata than to A. millefolium. The former two only differed in the occurrence of four compounds. The flavonols syringetin-3-O-glucoside and mearnsetin-hexoside, not reported for an Achillea species before, have been detected in A. atrata and A. moschata. All Achillea species reduced growth of the tested bacteria. A. atrata demonstrated highest activity against Propionibacterium acnes and Staphylococcus epidermidis, both being involved in the pathogenesis of acne vulgaris. Furthermore, A. atrata has a pronounced anti-methicillin-resistant Staphylococcus aureus potential. Bioassay-guided fractionation revealed that only the most polar fraction of A. moschata displayed antimicrobial activity, which was attributed to phenolics such as apigenin, centaureidin, and nevadensin, being present in high amounts in A. atrata. Thus, this alpine species shows promising antimicrobial activity and might be a potential source for developing novel dermal/topical drugs.

Keywords: Achillea atrata; Achillea millefolium; Achillea moschata; phenolic metabolome.

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