| DOI | Trouver le DOI : https://doi.org/10.1021/ja405634k |
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| Auteur | Rechercher : Silveira, Rodrigo L.1; Rechercher : Stoyanov, Stanislav R.1; Rechercher : Gusarov, Sergey1; Rechercher : Skaf, Munir S.; Rechercher : Kovalenko, Andriy1 |
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| Affiliation | - Conseil national de recherches du Canada. Technologies de sécurité et de rupture
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| Format | Texte, Article |
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| Sujet | Cell wall structure; Cellulose surfaces; Chemical compositions; Hydrogen bond donors; Lignocellulosic biomass; Molecular pictures; Molecular theory of solvation; Valuable chemicals; Cellulose; acetic acid; arabinose; carboxylic acid; functional group; glucuronic acid; hemicellulose; aqueous solution; chemical composition; decomposition; density; molecular recognition; molecular weight; phenotype; plant growth; proton transport; stereochemistry; thermodynamics |
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| Résumé | Efficient conversion of lignocellulosic biomass to second-generation biofuels and valuable chemicals requires decomposition of resilient plant cell wall structure. Cell wall recalcitrance varies among plant species and even phenotypes, depending on the chemical composition of the noncellulosic matrix. Changing the amount and composition of branches attached to the hemicellulose backbone can significantly alter the cell wall strength and microstructure. We address the effect of hemicellulose composition on primary cell wall assembly forces by using the 3D-RISM-KH molecular theory of solvation, which provides statistical-mechanical sampling and molecular picture of hemicellulose arrangement around cellulose. We show that hemicellulose branches of arabinose, glucuronic acid, and especially glucuronate strengthen the primary cell wall by strongly coordinating to hydrogen bond donor sites on the cellulose surface. We reveal molecular forces maintaining the cell wall structure and provide directions for genetic modulation of plants and pretreatment design to render biomass more amenable to processing. © 2013 American Chemical Society. |
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| Date de publication | 2013-11-25 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 21271817 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 53c180a0-1b08-4dbd-bc58-9205d669e901 |
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| Enregistrement créé | 2014-04-22 |
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| Enregistrement modifié | 2020-04-22 |
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