Chemical characterization of structures forming the lignin-like fractions in ancestral plants
| Autor: | Rencoret, Jorge, Gutiérrez Suárez, Ana, Marques, Gisela, Río Andrade, José Carlos del, Tobimatsu, Yuki, Lam, Pui Ying, Pérez-Boada, Marta, Ruiz-Dueñas, F. J., Barrasa González, José María, Martínez, Ángel T. |
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| Přispěvatelé: | European Commission, Ministerio de Ciencia e Innovación (España), Agencia Estatal de Investigación (España), Consejo Superior de Investigaciones Científicas (España) |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Popis: | 4 páginas.- 1 figuras.- 8 referencias.- Descripción del póster presentado en el 16th European Workshop on Lignocellulosics and Pulp (EWLP) Gothenburg, Sweden, June 28 – July 1, 2022 Lignin-like fractions isolated from several ancestral plants –including moss, lycophyte, horsetail, fern, cycad, and gnetophyte species– were structurally characterized by pyrolysis-GC/MS and 2D-NMR spectroscopy. Py-GC/MS yielded marker compounds characteristic of lignin units, except in the moss and horsetail lignin samples, and the 2D-NMR experiments displayed intense correlations signals of guaiacyl (G) units in fern and cycad lignins, along with smaller amounts of p-hydroxyphenyl (H) units. Interestingly, the lignins from the lycophyte and the gnetophyte also incorporated significant amounts of syringyl (S) units, characteristic of angiosperms, which appeared much later in plant evolution. Remarkably, the HSQC spectra also revealed the presence of flavonoid compounds never reported before in natural lignins. This work was supported by the projects BIO2017-86559-R (cofinanced by FEDER funds) and PID2020-118968RB-I00, funded by MCIN/AEI/ 10.13039/501100011033, as well as by the CSIC project PIE202120E019. |
| Databáze: | OpenAIRE |
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