in this study, hydrophilic extractives of beech, maple, alder and hornbeam knots were isolated and characterized by means of gas chromatography - mass spectrometry (gc / ms). also, antioxidant activity of the extracts extractives was studied. hydrophilic compounds of the extractives were isolated by soaking the wood flour in the solvent. isolation was made using a hexane pretreatment for removi...

Arbutus andrachne and Platanus orientalis grow naturally in Turkey. They do not occur in stands but can be seen as solitary trees. A. andrachne is seen in coastal parts of Anatolia, whereas P. orientalis can be found from west to the east of Turkey, mostly in river banks. Lipophilic extractives, hydrophilic extractives, and suberin monomers from Arbutus andrachne and Platanus orientalis bark wa...

In Central Europe the main species that are used for the production of sawn wood are spruce, pine, and European beech. After the sawing process, the sawn timber is technically dried to a certain moisture content by means of condensation drying. The water movement in the cellular structure, which is caused by the drying process, draws some of the extractives into solution. In the process of kiln...

Softwood bark contains a large amounts of extractives-i.e., soluble lipophilic (such as resin acids) and hydrophilic components (phenolic compounds, stilbenes). The effects of the partial removal of water-soluble extractives before acid-catalyzed steam pretreatment on enzymatic digestibility were assessed for two softwood barks-Norway spruce and Scots pine. A simple hot water extraction step re...

13 Supercritical water treatment (380ºC/100MPa/8s) was applied to extractives-14 free oil palm trunk and sapwood portion of Japanese beech and their fractionated 15 products were comparatively characterized, for water-soluble portion and water-16 insoluble portion composed of methanol-soluble portion and methanol-insoluble 17 residue. As a result, the water-soluble portion was determined to be ...

the effect of soxhlet and simple immersion extraction methods on the amount and type of bioactive phenolic compounds of c. arizonica woodknots were studied. lipophilic and hydrophilic compounds were soxhlet extracted according to t280 pm-99 standard method with hexane and acetone solvents, respectively.  also, in the immersion method woodknot samples were dipped in hexane to remove the lipophil...

Previous studies have shown the high sorption affinity of polycyclic aromatic hydrocarbons by cork. The aim of the present work is to go further by investigating the sorption mechanism of polycyclic aromatic hydrocarbons (exemplified by phenanthrene) on cork and the availability of the chemical components (i.e. lignin, suberin, holocellulose and extractives) to retain phenanthrene. Two approach...

the methanol extracts of leaves of bauhinia acuminata (mesf) and their different fractions obtained from modified kupchan partitioning method i.e. methanol, pet ether, carbon tetrachloride, chloroform, and aqueous soluble fractions were subjected to biological screening such as total phenolic content and antioxidant activity screening.the amount of total phenolic content differed in different e...