“…The biological activity of the essential oil of E. angustifolium has not been thoroughly studied, but antioxidant, antibacterial, and antimycotic properties have been documented [50][51][52]. Other groups of active metabolites such as alkaloids (angustifoline A), lignans, fatty acids (tricosanoic, nervonic, linoleic, palmitic, caprylic, caproic, butyric, and others), and sterols (campesterol, stigmasterol, β-sitosterol, cholesterol, and their derivatives) have also been identified [13,53,54] To date, E. angustifolium extracts have been tested in the treatment of BPH, in wound healing or as ingredients of cosmetic products, nano-bactericides [55], and as a food preservative [56]. Antimicrobial properties of fireweed have been studied since the beginning of this century, but in the last decade, the number of publications has increased significantly.…”