Carotenoid Composition of Telekia speciosa

Erzsébet Varga; Viktória Lilla Balázs; Viktor Sándor; Attila Agócs; Veronika Nagy; Sándor Balázs Király; Tibor Kurtán; Péter Molnár; József Deli

doi:10.3390/plants12244116

Carotenoid Composition of Telekia speciosa

Plants (Basel). 2023 Dec 8;12(24):4116. doi: 10.3390/plants12244116.

Authors

Erzsébet Varga¹, Viktória Lilla Balázs², Viktor Sándor³, Attila Agócs⁴, Veronika Nagy⁴, Sándor Balázs Király⁵, Tibor Kurtán⁵, Péter Molnár², József Deli^{2

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Affiliations

¹ Department of Pharmacognosy and Phytotherapy, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Targu Mures, 540139 Târgu Mureș, Romania.
² Department of Pharmacognosy, Faculty of Pharmacy, University of Pécs, Rókus utca 2, H-7624 Pécs, Hungary.
³ Institute of Bioanalysis, Medical School, University of Pécs, Szigeti út 12, H-7624 Pécs, Hungary.
⁴ Department of Biochemistry and Medical Chemistry, Medical School, University of Pécs, Szigeti út 12, H-7624 Pécs, Hungary.
⁵ Department of Organic Chemistry, Faculty of Sciences, University of Debrecen, H-4032 Debrecen, Hungary.

Abstract

The carotenoid composition of the flower of Telekia speciosa was investigated for the first time by HPLC-DAD-MS. In addition to the main carotenoid lutein and its geometrical isomers, 5,6-epoxy-carotenoids, namely violaxanthin, lutein 5,6-epoxide and antheraxanthin, were detected in larger amounts. In addition, β-carotene 5,6-epoxide and β-carotene 5,6,5',6'-diepoxide were found, which occurs very rarely in plants. For unambigous identification, β-carotene 5,6-epoxide and β-carotene 5,6,5',6'-diepoxide were prepared semisynthetically, and they were characterized by ¹H and ¹³C NMR and HPLC-CD methods.

Keywords: HPLC-DAD-MS analysis; NMR; Teleki speciosa; carotenoids.

Abstract

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