XI WORLD FORESTRY CONGRESS

Antalya, Turkey, 13 to 22 October 1997




VOLUME 3, TOPIC 15


A. K. Mukerji1




    WOOD AND BARK EXTRACTS OF TURKISH CONIFEROUS WOOD SPECIES AS RAW MATERIAL FOR CHEMICALS

    Harzemah HafÚzoXlu1

    Most of Turkish coniferous wood species, Pinus sylvestris, Pinus nigra, Pinus brutia, Pinus pinea, Cedrus libani, Abies nordmanniana and Picea orientalis, were investigated for wood and bark extractives. The bark contains higher amounts of lipophilic extractives than the wood. Fatty acids, resin acids and sterols are the main groups of lipophilic constituents. The pine species contain higher amounts of lipophilic extractives than those of the other conifers. Cedar is distinguished with its unique composition of lipophilic fraction consisting mainly of sesquiterpene constituents. Also hydropphilic constituents, lignans and monosaccharides, occur both in the wood and in the bark. The bark is very rich in phenolic constituents, mostly of a complex nature. Barks of fir and spruce were investigated for their solubility values, phenolic character and suberin composition. Possible uses of the extractives as chemical raw material are given.

    1 Karaelmas University of Zonguldak, Faculty of Forestry, BartÚn, Turkey




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