A comparative evaluation of the antimicrobial activity of aqueous extracts from aerial organs of meadowsweet (Filipendula Ulmaria (L.) Maxim.) and dropwort (Filipendula Hexapetala Gilib.)

Aim to evaluate the comparative antimicrobial activity of the aqueous extracts from the aerial organs of the meadowsweet and dropwort. 
Material and methods. The objects of the research were the aqueous extracts of the aerial organs of the meadowsweet and dropwort. For the preparation of the extracts we used the raw material harvested in 2021 in the village of Alekseevka, Samara Region. The antimicrobial activity of the aqueous extracts was determined by the method of two-fold dilution in the MuellerHinton broth. 
Results. According to the results of screening of the antibacterial activity of the aqueous extracts from the aerial organs of the meadowsweet and dropwort, the significant activity against gram-positive bacteria of S. aureus and B. cereus strains was detected. The studied extracts demonstrated not lower antimicrobial activity than the reference samples of 0.1% alcohol solution of levomycetin (chloramphenicol) and freshly prepared 0.1% benzylpenicillin solution. The results have confirmed the prospects for further study of the aerial organs of the meadowsweet (Filipendula ulmaria (L.) Maxim.) and dropwort (Filipendula hexapetala Gilib.) as a possible source of biologically active substances with antimicrobial activity.