Root neck of Norway spruce as a source of bioactive lignans and stilbenes
-
Harri Latva-Mäenpää
,
Tapio Laakso
Abstract
Bioactive compounds of acetone-water extracts obtained from the root neck (RN) of Norway spruce (Picea abies [L.] Karst.) have been studied for the first time. RN samples were divided into different zones and cut, and wood and bark were extracted separately with acetone-water. The extracts were analyzed by gas chromatography-mass spectrometry. The extractives have a tissue-specific distribution. Several lignans were identified in the heartwood. High concentrations (10%) of hydroxymatairesinol were found from the heartwood at the lowermost part of the RN. The inner part of the bark contained the highest concentrations of stilbene glucosides (20%), which were present in the outer bark only to a minor extent (0.2%). Pressurized hot water extraction was also applied and was found to be effective in separating lignans from biomass. Norway spruce roots and stumps are usually utilized for gaining bioenergy. The results presented here show that these abundant residual materials of forest economy may be a valuable source of highly bioactive compounds such as the lignan hydroxymatairesinol and stilbenes.
This work was carried out as a cooperation between the Finnish Forest Research Institute and the Department of Chemistry, University of Helsinki. The work was part of Forestcluster Ltd.’s Future Biorefinery Program funded partly by TEKES. The authors also wish to thank Mr. Marko Mononen for preparing and analyzing the bark and wood samples and Mr. Jari Ilomäki for his skillful technical assistance.
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©2014 by Walter de Gruyter Berlin Boston
Articles in the same Issue
- Masthead
- Masthead
- Original Articles
- Root neck of Norway spruce as a source of bioactive lignans and stilbenes
- Wood decay by indoor basidiomycetes at different moisture and temperature
- Testing of set recovery of unmodified and furfurylated densified wood by means of water storage and alternating climate tests
- Improvement of dimensional stability of wood by in situ synthesis of organo-montmorillonite: preparation and properties of modified Southern pine wood
- Properties of molding plates made with various matrices impregnated with PF and liquefied wood-based PF resins
- Impregnation of poplar wood (Populus euramericana) with methylolurea and sodium silicate sol and induction of in-situ gel polymerization by heating
- AFM nanoindentation of pulp fibers and thin cellulose films at varying relative humidity
- Prediction of oven-dry density of wood by time-domain terahertz spectroscopy
- Secretion of a bundle of (1→3)-β-glucan hollow fibrils from protoplasts of callus suspension under a Ca2+-rich and acidic stressed condition
- Synthesis and biological activities of α-pinene-based dithiadiazoles
- Aluminum localization in the cell walls of the mature xylem of maple tree detected by elemental imaging using time-of-flight secondary ion mass spectrometry (TOF-SIMS)
- Relationships between 3D roughness parameters and visuotactile perception of surfaces of maritime pinewood and MDF
- Polyelectrolyte complex containing antimicrobial guanidine-based polymer and its adsorption on cellulose fibers
- Combination of neutron imaging (NI) and digital image correlation (DIC) to determine intra-ring moisture variation in Norway spruce
- Influence of wood durability on the suppressive effect of increased temperature on wood decay by the brown-rot fungus Postia placenta
- Experimental and finite element study of the effect of temperature and moisture on the tangential tensile strength and fracture behavior in timber logs
- Short Note
- Pull-out method for direct measuring the interfacial shear strength between short plant fibers and thermoplastic polymer composites (TPC)
- Meetings
- Meetings
Articles in the same Issue
- Masthead
- Masthead
- Original Articles
- Root neck of Norway spruce as a source of bioactive lignans and stilbenes
- Wood decay by indoor basidiomycetes at different moisture and temperature
- Testing of set recovery of unmodified and furfurylated densified wood by means of water storage and alternating climate tests
- Improvement of dimensional stability of wood by in situ synthesis of organo-montmorillonite: preparation and properties of modified Southern pine wood
- Properties of molding plates made with various matrices impregnated with PF and liquefied wood-based PF resins
- Impregnation of poplar wood (Populus euramericana) with methylolurea and sodium silicate sol and induction of in-situ gel polymerization by heating
- AFM nanoindentation of pulp fibers and thin cellulose films at varying relative humidity
- Prediction of oven-dry density of wood by time-domain terahertz spectroscopy
- Secretion of a bundle of (1→3)-β-glucan hollow fibrils from protoplasts of callus suspension under a Ca2+-rich and acidic stressed condition
- Synthesis and biological activities of α-pinene-based dithiadiazoles
- Aluminum localization in the cell walls of the mature xylem of maple tree detected by elemental imaging using time-of-flight secondary ion mass spectrometry (TOF-SIMS)
- Relationships between 3D roughness parameters and visuotactile perception of surfaces of maritime pinewood and MDF
- Polyelectrolyte complex containing antimicrobial guanidine-based polymer and its adsorption on cellulose fibers
- Combination of neutron imaging (NI) and digital image correlation (DIC) to determine intra-ring moisture variation in Norway spruce
- Influence of wood durability on the suppressive effect of increased temperature on wood decay by the brown-rot fungus Postia placenta
- Experimental and finite element study of the effect of temperature and moisture on the tangential tensile strength and fracture behavior in timber logs
- Short Note
- Pull-out method for direct measuring the interfacial shear strength between short plant fibers and thermoplastic polymer composites (TPC)
- Meetings
- Meetings
