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2D Heteronuclear (1H-13C) Single Quantum Correlation (HSQC) NMR Analysis of Norway Spruce Bark Components
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology.
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology.
2009 (English)In: Characterization of Lignocellulosic Materials, Blackwell Publishing, 2009, 1-16 p.Chapter in book (Refereed)
Abstract [en]

Norway spruce (Picea abies) bark, collected during the winter and summer seasons, has been separated into inner- and outer-bark fractions followed by extraction using a fivesolvent extraction procedure. The inner-bark fraction was found to contain a rather high amount of carbohydrates but only minor amounts of tannin. In addition, the glucosides of stilbenes such as astringin and isorhapontin were detected. The outer-bark fraction had a high content of high-molecular-mass tannin but was low in carbohydrates. Lignin-derived components were also detected. Further studies of the tannin fraction using advanced nuclear magnetic resonance (NMR) techniques showed that polyflavanol and polystilbene units together with glucoside units were prevalent.

Place, publisher, year, edition, pages
Blackwell Publishing, 2009. 1-16 p.
Keyword [en]
Condensed tannin purification, Milled bark tannin-lignin, NMR identification, Norway spruce bark components - 2D heteronuclear single quantum correlation (HSQC) NMR analysis, Solvent extraction, Solvent extractions and bark component separation, Stilbenes and tannins, Wood, pulp fibers, and paper - novel and improved methods of characterization
National Category
Paper, Pulp and Fiber Technology
URN: urn:nbn:se:kth:diva-152044DOI: 10.1002/9781444305425.ch1ScopusID: 2-s2.0-84889449388ISBN: 978-140515880-0ISBN: 1405158808OAI: diva2:749397

QC 20140924

Available from: 2014-09-24 Created: 2014-09-23 Last updated: 2014-09-24Bibliographically approved

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