Analysis of extractives from Pinus halepensis and Eucalyptus camaldulensis as predominant trees in Algeria
-
Nacera Benouadah
, Andrey Pranovich
, Djamel Aliouche , Jarl Hemming , Annika Smeds and Stefan Willför
Abstract
The lipophilic and hydrophilic extractives in the sapwood (sW) and heartwood (hW) of stems from Pinus halepensis Mill and Eucalyptus camaldulensis Dehnh trees grown in the north of Algeria were analyzed. The extraction of dried samples was carried out in an accelerated solvent extractor (ASE). The lipophilic substances were first extracted with n-hexane and then the hydrophilic ones with acetone/water. The extractives were analyzed by gas chromatography-flame ionization detection (GC-FID), GC-mass spectroscopy (MS) and high-performance size-exclusion chromatography (HPSEC). The largest amount of lipophilic extractives (≈13.4 mg g−1) was observed in the hW of P. halepensis, while the hW of E. camaldulensis contained the largest amount of hydrophilic extractives (≈116.3 mg g−1). Lipophilic extractives are mainly composed of oleoresins (resin acids, terpenes), fats (fatty acids, glycerides, steryl esters, sterols) and waxes (fatty alcohols). Hydrophilic extractives are composed of polyphenols (stilbenes, flavanols), sugars (monosaccharides) and sugar alcohols (cyclic polyols). The main identified lipophilic extractives are resin acids in pine and glycerides in eucalypt. The main identified hydrophilic extractives are cyclic polyols in pine and flavanols and monosaccharides in eucalypt. The total content of extractives is higher in hW than in sW.
Acknowledgments
This work was part of the research activities of the Johan Gadolin Process Chemistry Centre at Åbo Akademi University in Finland. We thank The Algerian Ministry of Higher Education and Scientific Research for funding support within “Le Projet National Exceptionnel (P.N.E)”. Mohamed Benamane from the Directorate of Forestry of the Wilaya of Boumerdès and Mohamed Ziyou from the Algiers Post Office are acknowledged for their logistic support.
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Articles in the same Issue
- Frontmatter
- Original Articles
- Lignin-based carbon fibers for renewable and multifunctional lithium-ion battery electrodes
- Characterization of residual lignin in cellulose isolated by the diglyme method from three Pinus species by IR spectroscopy and analytical pyrolysis
- Analysis of extractives from Pinus halepensis and Eucalyptus camaldulensis as predominant trees in Algeria
- Moisture transport and sorption in beech and spruce barks
- Water states and migration in Xinjiang poplar and Mongolian Scotch pine monitored by TD-NMR during drying
- Penetration and distribution of paraffin wax in wood of loblolly pine and Scots pine studied by time domain NMR spectroscopy
- Biological and topochemical studies on the resistance of excavated oak piles (Quercus sp.) from a historical bridge in Bavaria
- Heartwood durability of Dyera costulata, Neolamarckia cadamba and Khaya ivorensis trees from fast-growth plantations against subterranean termite Coptotermes curvignathus
- Mechanical properties of oriented bamboo scrimber boards made of Phyllostachys pubescens (moso bamboo) from Taiwan and China as a function of density
- Chemical, physico-mechanical properties and biological durability of rubberwood particleboards after post heat-treatment in palm oil
Articles in the same Issue
- Frontmatter
- Original Articles
- Lignin-based carbon fibers for renewable and multifunctional lithium-ion battery electrodes
- Characterization of residual lignin in cellulose isolated by the diglyme method from three Pinus species by IR spectroscopy and analytical pyrolysis
- Analysis of extractives from Pinus halepensis and Eucalyptus camaldulensis as predominant trees in Algeria
- Moisture transport and sorption in beech and spruce barks
- Water states and migration in Xinjiang poplar and Mongolian Scotch pine monitored by TD-NMR during drying
- Penetration and distribution of paraffin wax in wood of loblolly pine and Scots pine studied by time domain NMR spectroscopy
- Biological and topochemical studies on the resistance of excavated oak piles (Quercus sp.) from a historical bridge in Bavaria
- Heartwood durability of Dyera costulata, Neolamarckia cadamba and Khaya ivorensis trees from fast-growth plantations against subterranean termite Coptotermes curvignathus
- Mechanical properties of oriented bamboo scrimber boards made of Phyllostachys pubescens (moso bamboo) from Taiwan and China as a function of density
- Chemical, physico-mechanical properties and biological durability of rubberwood particleboards after post heat-treatment in palm oil