11'-α-Tocomonoenol is the major α-tocomonoenol isomer in cyanobacteria and microalgae from Costa Rica
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| Autores: | , , , , , , , |
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| Formato: | artículo original |
| Fecha de Publicación: | 2022 |
| Descripción: | α-Tocomonoenols are vitamin E-derivatives with a single double-bond in the tocochromanol sidechain. Currently, two congeners are known: 11′-α-tocomonoenol and 12′-α-tocomonoenol, the later better known as “marine-derived tocopherol” (MDT). Information regarding their presence in photosynthetic aquatic organisms is scarce. We thus determined vitamin E congeners and derivatives in microalgae and cyanobacteria to assess their potential as sources of α-tocomonoenols. Tocochromanols were extracted from freeze-dried cyanobacteria (Arthrospira platensis) and microalgae (Nannochloropsis oceanica, Chlorella vulgaris and Tetraselmis sp.) and quantified by HPLC-FLD. α-Tocomonoenol was quantified in N. oceanica and Tetraselmis sp. where it was the second most abundant tocochromanol following α-tocopherol. LC-MSn and GC-MS confirmed that 11′-α-tocomonoenol and not MDT was the predominant α-tocomonoenol form in evaluated cyanobacteria and microalgae. No significant correlations were observed between tocomonoenol or vitamin E contents and fatty acid profiles. In conclusion, microalgae and particularly Tetraselmis sp. are novel sources of 11′-α-tocomonoenol, a tocochromanol not previously reported in aquatic photosynthetic organisms. |
| País: | Kérwá |
| Institución: | Universidad de Costa Rica |
| Repositorio: | Kérwá |
| Lenguaje: | Inglés |
| OAI Identifier: | oai:kerwa.ucr.ac.cr:10669/90450 |
| Acceso en línea: | https://hdl.handle.net/10669/90450 |
| Palabra clave: | MARINE ALGAE VITAMINS BIOSYNTHESIS BACTERIA |