Achillea filipendulina Lam.: Chemical constituents and antimicrobial activities of essential oil of stem, leaf, and flower.

In this study, we extracted the essential oils of the stem, leaf, and flower of Achillea filipendulina , analyzed them, and studied their antibacterial properties. Of 16, 53 and 35 compounds identified in the stem, leaf, and flowers, respectively, only 5 are present in all three segments of the plant. The essential oil of the stem was mainly composed of Neryl acetate, Spathulenol, Carvacrol, Santolina alcohol, and trans -Caryophyllene oxide. However, the main identified components of leaf were 1,8-Cineole, Camphor, Aascaridole, trans -Isoascaridole, and Piperitone oxide and the main components of the flower oil were Ascaridole, trans -Isoascaridole, 1,8-Cineole, p-Cymene, and Camphor. The extracted oil from different segments demonstrated varying antibacterial properties against both Gram-positive and Gram-negative bacteria, demonstrated by disk, minimum inhibitory concentration, and minimum bactericidal concentration methods. These suggest that the application of all segments of aerial parts of A. filipendulina may have a better therapeutic effect in fighting pathogenic systems.