Active role of lignin in anchoring wood-based stabilizers to the emulsion interface

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dc.contributor.author Morais de Carvalho, Danila
dc.contributor.author Lahtinen, Maarit
dc.contributor.author Bhattarai, Mamata
dc.contributor.author Lawoko, Martin
dc.contributor.author Mikkonen, Kirsi S.
dc.date.accessioned 2021-11-18T06:40:02Z
dc.date.available 2021-11-18T06:40:02Z
dc.date.issued 2021-11-16
dc.identifier.citation Morais de Carvalho , D , Lahtinen , M , Bhattarai , M , Lawoko , M & Mikkonen , K S 2021 , ' Active role of lignin in anchoring wood-based stabilizers to the emulsion interface ' , Green Chemistry , vol. 23 , no. 22 , pp. 9084 –9098 . https://doi.org/10.1039/D1GC02891J
dc.identifier.other PURE: 169881544
dc.identifier.other PURE UUID: 5fd077b1-c8fa-435d-9cdd-27499149baea
dc.identifier.other WOS: 000714145600001
dc.identifier.other ORCID: /0000-0002-6839-8153/work/103423453
dc.identifier.other ORCID: /0000-0001-7121-4602/work/103424254
dc.identifier.other ORCID: /0000-0003-4490-5912/work/103424704
dc.identifier.uri http://hdl.handle.net/10138/336477
dc.description.abstract Hemicellulose-rich wood extracts show efficient capacity to adsorb at emulsion interfaces and stabilize them. Their functionality is enhanced by lignin moieties accompanying the hemicellulose structures, in the form of lignin-carbohydrate complexes (LCCs) and, potentially, other non-covalent associations. The formation and stability of emulsions is determined by their interfacial regions. These are largely unexplored assemblies when formed from natural stabilizers with a complex chemical composition. Understanding the structure of the interfacial region could facilitate both designing the extraction processes of abundant biomasses and unraveling a valuable industrial application potential for the extracts. Herein, we characterized the LCCs from the interface of oil-in-water emulsions stabilized by galactoglucomannan (GGM) or glucuronoxylan (GX)-rich wood extracts, using two-dimensional nuclear magnetic resonance (NMR) spectroscopy analysis. The type of covalent linkage between residual lignin and hemicelluloses determined their partitioning between the continuous and interfacial emulsion phases. Benzylether structures, only found in the interface, were suggested to participate in the physical stabilization of the emulsion droplets. In turn, the phenylglycosides, preferentially observed in the continuous phase, were suggested to interact with adsorbed stabilizers by electrostatic interaction. More hydrophobic lignin structures, such as guaiacyl lignin type, dibenzodioxocin substructures, and certain end groups also contributed to droplet stabilization. The elucidation of such attributes is of paramount importance for the biorefinery industry, enabling the optimization of extraction processes for the preparation of wood-based stabilizers and designed interfaces for novel and sustainable emulsion systems. en
dc.format.extent 15
dc.language.iso eng
dc.relation.ispartof Green Chemistry
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject ASPEN
dc.subject BIRCH
dc.subject CARBOHYDRATE
dc.subject HEMICELLULOSES
dc.subject NATURAL EMULSIFIERS
dc.subject PARTICLES
dc.subject PROTEIN
dc.subject RESIDUES
dc.subject SPRUCE GALACTOGLUCOMANNANS
dc.subject WALL
dc.subject 416 Food Science
dc.title Active role of lignin in anchoring wood-based stabilizers to the emulsion interface en
dc.type Article
dc.contributor.organization Department of Food and Nutrition
dc.contributor.organization Food Materials Science Research Group
dc.contributor.organization Helsinki Institute of Sustainability Science (HELSUS)
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.1039/D1GC02891J
dc.relation.issn 1463-9262
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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