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Título: | Tritordeum, a hybrid cereal with a highly tricin-enriched lignin |
Autor: | Benito Jareño, Javier; Marques, Gisela CSIC ORCID; Rosado, Mario J. CSIC ORCID; Barro Losada, Francisco CSIC ORCID ; Gutiérrez Suárez, Ana CSIC ORCID ; Río Andrade, José Carlos del CSIC ORCID ; Rencoret, Jorge CSIC ORCID | Palabras clave: | Tricin2D-NMR Agricultural residue Cinnamic acids Waste valorization |
Fecha de publicación: | mar-2024 | Editor: | Elsevier | Citación: | International Journal of Biological Macromolecules 261 (parte 2): 129694 (2024) | Resumen: | The lignin from tritordeum straw, a hybrid cereal from crossbreeding of durum wheat and wild barley, was isolated and chemically characterized. Its composition and structure were studied by analytical pyrolysis (Py-GC/MS), nuclear magnetic resonance spectroscopy (NMR), Derivatization Followed by Reductive Cleavage (DFRC) method, and gel permeation chromatography (GPC). The data revealed an enrichment of guaiacyl (G) units (H:G:S of 3:61:36), which had a significant impact on the distribution of inter-unit linkages. The predominant linkages were the β–O–4′ alkyl-aryl ethers (78 % of all linkages), with substantial proportions of condensed linkages such as phenylcoumarans (11 %), resinols (4 %), spirodienones (4 %), and dibenzodioxocins (2 %). Moreover, DFRC revealed that tridordeum straw lignin was partly acylated at the γ-OH with both acetates and p-coumarates. Acetates were principally attached to G-units, whereas p-coumarates were predominantly attached to S-units. Furthermore, and more importantly, tritordeum lignin incorporates remarkable amounts of a valuable flavone, tricin, exceeding 30 g per kilogram of straw. Given the diverse industrial applications associated with this high-value molecule, tritordeum straw emerges as a promising and sustainable resource for its extraction. | Descripción: | 11 páginas.- 7 figuras.- 5 tablas.- 49 referencias.- Supplementary data to this article can be found online at https://doi.org/10.1016/j.ijbiomac.2024.129694 | Versión del editor: | http://hdl.handle.net/10.1016/j.ijbiomac.2024.129694 | URI: | http://hdl.handle.net/10261/345063 | DOI: | 10.1016/j.ijbiomac.2024.129694 | ISSN: | 0141-8130 |
Aparece en las colecciones: | (IRNAS) Artículos (IAS) Artículos |
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