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Spruce bark hemicelluloses and pectins: extraction and characterization
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Wood Chemistry and Pulp Technology.
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Polymer Technology.ORCID iD: 0000-0002-1631-1781
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Wood Chemistry and Pulp Technology.
2011 (English)In: 16th International Symposium on Wood, Fiber and Pulping Chemistry Proceedings Vol. I: Tianjin, China June 8-10, 2011, 2011, 103-106 p.Conference paper, Published paper (Other academic)
Abstract [en]

In industrial spruce bark, up to 20 % of the dry mass consists of non-cellulosic polysaccharides. These polysaccharides can easily be extracted with pressurized hot water and have a large potential as a starting polymeric biomass for functional materials development.

In this study, spruce bark was collected directly after the debarking process. The different steps of extraction were performed in an Accelerated Solvent Extractor (ASE). Bark was first extracted with acetone at 100 °C to remove extractives. Spruce bark polysaccharides could then be extracted with pressurized water at 100-160 °C with the highest yield at 140 °C. They were mainly composed of glucose, arabinose and galacturonic acid units which revealed the presence of pectic substances, starch and arabinose-rich hemicelluloses, e.g. arabinans. Molecular weight estimations showed the presence of rather large polysaccharides with a Mw varying between 10 to 30 kDa, depending of the extraction conditions.

Place, publisher, year, edition, pages
2011. 103-106 p.
Keyword [en]
bark, hemicelluloses, pectins, biorefinery, Norway spruce
National Category
Polymer Chemistry Other Chemistry Topics
Identifiers
URN: urn:nbn:se:kth:diva-78255Scopus ID: 2-s2.0-84855696710OAI: oai:DiVA.org:kth-78255DiVA: diva2:492441
Conference
16th International Symposium on Wood, Fiber and Pulping Chemistry, Tianjin, China June 8-10, 2011
Note

QC 20120215

Available from: 2013-04-22 Created: 2012-02-08 Last updated: 2013-04-29Bibliographically approved

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Edlund, Ulrica

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  • apa
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