Biological Activities of Alkaloid Fraction of <i>Fritillaria karelinii</i> (Fisch. ex D. Don)

The bulbs of <i>F. karelinii</i> were shown to contain diverse classes of secondary metabolites, as confirmed by histochemical analysis. The HPTLC and GC-MS profiling identified 5α-cevan-3β,20-diol and fritillarin as the predominant steroidal alkaloids, whose RMF and MF values confirm their structural reliability. However, under the tested experimental conditions, the methanolic extract did not exhibit significant antioxidant, antimicrobial, or cytotoxic activities. These findings indicate that while the species possesses a complex phytochemical profile, further investigations are required to clarify its pharmacological relevance. The present results highlight the need for more comprehensive studies, including the evaluation of other compound classes (e.g., phenolics, flavonoids, alkaloids) and optimized experimental conditions, before firm conclusions regarding its medicinal potential and traditional uses can be drawn.