HOT-WATER EXTRACTION AND CHARACTERIZATIONOF HEMICELLULOSES AND PECTINS FROM BARK OF NORWAY SPRUCE (PICEA ABIES)
2010 (English)In: 11th European Workshop on Lignocellulosics and Pulp: August 16-19, 2010 Hamburg/Germany, 2010, 243-246 p.Conference paper (Other academic)
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.
Polymer Chemistry Other Chemistry Topics
IdentifiersURN: urn:nbn:se:kth:diva-78417OAI: oai:DiVA.org:kth-78417DiVA: diva2:492466
11th European Workshop on Lignocellulosics and Pulp, gust 16-19, 2010 Hamburg/Germany
QC 201202102012-02-102012-02-082013-05-07Bibliographically approved