Carotenoid profiles of red- and yellow-colored arils of cultivars of Taxus baccata L. and Taxus × media Rehder
| Autor: | Ralf M. Schweiggert, Christof B. Steingass, Christian Schäfer, Roland Schex, Veronika M. Lieb |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Color Plant Science Horticulture 01 natural sciences Biochemistry Mass Spectrometry Pigment chemistry.chemical_compound Aril Cultivar Molecular Biology Carotenoid Chromatography High Pressure Liquid chemistry.chemical_classification biology 010405 organic chemistry Taxus × media General Medicine biology.organism_classification Rhodoxanthin Carotenoids 0104 chemical sciences chemistry Taxus visual_art visual_art.visual_art_medium Taxaceae 010606 plant biology & botany |
| Zdroj: | Phytochemistry. 186 |
| ISSN: | 1873-3700 |
| Popis: | The botanical delimitation of Taxus species and cultivars may be facilitated by characterizing the pigment profiles of their red- and yellow-fleshed arils. Therefore, we determined genuine carotenoid profiles of differently colored arils of seven defined cultivars of Taxus baccata L. and Taxus × media Rehder. In-depth HPLC-DAD-ESI/APCI-MSn analyses revealed the presence of 43 carotenoids. Exceptional retro-carotenoids dominated the profiles of all samples assessed. Rhodoxanthin (E/Z)-isomers were predominant in the red-colored arils, resulting in a rather unusual abundance of carotenoid isomers as expressed by ratios of up to 1.3:2.0:0.9 between (all-E)-, (6Z)-, and (6Z,6′Z)-rhodoxanthin, respectively. By contrast, the uncommon yellow arils of Taxus baccata L. ‘Lutea’ mainly contained eschscholtzxanthin (E/Z)-isomers and esters. Total carotenoid concentrations ranged from 17.00 to 58.78 μg/g fresh weight across all samples assessed. Highest total rhodoxanthin concentrations of 51.33 ± 0.46 μg/g fresh weight were obtained from the red arils of Taxus × media Rehder ‘Hicksii’. Overall, Taxus arils represent a promising source of carotenoids and, in particular, of retro-carotenoids with exceptional molecular structures and extraordinary absorption properties. |
| Databáze: | OpenAIRE |
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