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Bioactive phenolic substances in important tree species. Part 3: Knots and stemwood of Acacia crassicarpa and A. mangium

  • Suvi P. Pietarinen , Stefan M. Willför , Rainer E. Sjöholm and Bjarne R. Holmbom
From the journal Holzforschung


Polyphenols in heartwood, sapwood, and knots of Acacia crassicarpa and Acacia mangium were analysed using GC, GC-MS, HPSEC, and NMR. Melacacidin and isomelacacidin dominated in A. crassicarpa and teracacidin and its ketone in A. mangium. Also, bi- and triflavonoids were tentatively identified in the samples. The amounts of polyphenols were larger in the knots than in the heartwood of both species, while the composition within the species was the same.


Corresponding author. Laboratory of Wood and Paper Chemistry, Process Chemistry Centre, Åbo Akademi University, Porthansgatan 3, 20500 Åbo, Finland Tel.: +358-2-215-4887 Fax: +358-2-215-4868


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Published Online: 2005-06-01
Published in Print: 2005-01-01

©2004 by Walter de Gruyter Berlin New York

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