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HOT-WATER EXTRACTION AND CHARACTERIZATIONOF HEMICELLULOSES AND PECTINS FROM BARK OF NORWAY SPRUCE (PICEA ABIES)
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Wood Chemistry and Pulp Technology.
Laboratory of Wood and Paper Chemistry, Process Chemistry Centre, Åbo Akademi University, Turku/Åbo, Finland.
Laboratory of Wood and Paper Chemistry, Process Chemistry Centre, Åbo Akademi University, Turku/Åbo, Finland.
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Wood Chemistry and Pulp Technology.
2010 (English)In: 11th European Workshop on Lignocellulosics and Pulp: August 16-19, 2010 Hamburg/Germany, 2010, 243-246 p.Conference paper, Published paper (Other academic)
Abstract [en]

Bark of Norway spruce (Picea abies) contains 20 to 30% of hemicelluloses and pectins which could be extractedwith pressurized hot water. Hemicelluloses and pectins from the fresh inner bark were extracted with anAccelerated Solvent Extractor (ASE) with water at 100 °C, 140 °C and 160 °C. A large amount of arabinose andgalacturonic acid units in the water extract obtained at 140 °C revealed the presence of arabinans and pectins. Atthis temperature, the extraction of hemicelluloses and pectins was the most effective and generated high-molarmassnon-cellulosic polysaccharides with an average molar mass Mw around 40 kDa. Aromatic substancespresent in the hot-water extract at 140 °C could partly be removed by sorption on DAX-8 polyacrylate resin.

Place, publisher, year, edition, pages
2010. 243-246 p.
National Category
Polymer Chemistry Other Chemistry Topics
Identifiers
URN: urn:nbn:se:kth:diva-78417OAI: oai:DiVA.org:kth-78417DiVA: diva2:492466
Conference
11th European Workshop on Lignocellulosics and Pulp, gust 16-19, 2010 Hamburg/Germany
Note

QC 20120210

Available from: 2012-02-10 Created: 2012-02-08 Last updated: 2013-05-07Bibliographically approved

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CiteExportLink to record
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