Hot-water extraction and characterization of spruce bark non-cellulosic polysaccharides
Source abstract
Abstract
Abstract Non-cellulosic polysaccharides (NCP) from bark offer large potential as a class of natural raw materials for functional materials development and production of biochemicals. We have elaborated a process for sequential extraction of NCP from industrial Norway spruce bark using an accelerated solvent extraction (ASE) with water at 100 to 160°C. Carbohydrates, Klason lignin and ash content as well as size-exclusion chromatography (SEC) analyses were performed for all hot-water extracts. NCP were mainly composed of glucose, arabinose and galacturonic acid units which revealed the presence of starch, arabinose-rich hemicelluloses and pectins. In total, the industrial bark of Norway spruce contained up to 20% of NCP which were extracted with pressurized hot water. NCP were mainly extractable at 140°C and started to undergo degradation at higher temperature.
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Research context
OpenAlex topics: Polysaccharides and Plant Cell Walls · Polysaccharides Composition and Applications · Lignin and Wood Chemistry
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Affiliations
Division of Wood Chemistry and Pulp Technology, Department of Fiber and Polymer Technology, Royal Institute of Technology, KTH, Teknikringen 56, SE-100 44 Stockholm , Sweden
Division of Polymer Technology, Department of Fiber and Polymer Technology, Royal Institute of Technology, KTH, Teknikringen 56, SE-100 44 Stockholm , Sweden
Process Chemistry Centre, Laboratory of Wood and Paper Chemistry Åbo Akademi University, FI-20 500 Turku/Åbo , Finland
References
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