A1 Refereed original research article in a scientific journal
Comparative Metabolomics of Ligulate and Tubular Flowers of Two Cultivars of Calendula officinalis L
Authors: Ossipov Vladimir, Khazieva Firdaus, Baleev Dmitry, Salminen Juha-Pekka, Sidelnikov Nikolay
Publisher: MDPI
Publication year: 2024
Journal: Metabolites
Journal name in source: METABOLITES
Article number: ARTN 140
Volume: 14
Issue: 3
eISSN: 2218-1989
DOI: https://doi.org/10.3390/metabo14030140
Web address : doi.org/10.3390/metabo14030140
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/393333464
Calendula officinalis L. is a well-known plant widely used in traditional medicine due to the presence of various biologically active compounds. The main raw material for the production of medicinal preparations is the inflorescence, which consists of ligulate and tubular flowers. However, the characteristics of the metabolome of these flowers are not fully understood. This study identified and compared the levels of major metabolites in the ligulate and tubular flowers of two C. officinalis cultivars, ‘Golden Sea’ (GS) and ‘Paradise Garden’ (PG). The metabolome was analysed using ultra-performance liquid chromatography with photodiode array detection and a Q Exactive Orbitrap high-resolution mass spectrometer. It was found that the tubular flowers of both PG and GS cultivars had higher levels of lipids, phenolamides and caffeoylquinic acids and lower levels of triterpenoid glycosides than the ligulate flowers. It was also shown that the inflorescences of the GS, which had a 35% higher proportion of tubular flowers, contained 30% more phenolic compounds and 50% more lipids than the PG. Thus, the results obtained extend our understanding of the features in the metabolomes of ligulate and tubular flowers and suggest that the quality of inflorescences of C. officinalis cultivars, as a source of medicinal preparations, is strongly influenced by the proportion of ligulate and tubular flowers.
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