Abstract
Amount and composition of lipophilic and hydrophilic extractives were analyzed in the cones of five coniferous species, namely Pinus halepensis, P. brutia, P. pinea, P. sylvestris and P. nigra, growing natively in Turkey. Lipophilic extractives amounts, identified by GC, were found to be the highest in P. brutia (35.1 mg g−1) and P. halepensis (31.3 mg g−1) while the lowest values were found in P. sylvestris (9.0 mg g−1). Resin acids were the major lipophilic group in all cones. The predominant resin acids were abietic acid in P. pinea, P. halepensis and P. brutia, dehydroabietic acid in P. sylvestris, and isopimaric acid in P. nigra. Compared to lipophilic extractives, the amount of total hydrophilic extractives showed similar gravimetric values while sugars and sugar alcohols were the dominant group.
Zusammenfassung
Untersucht wurden die Menge und die Zusammensetzung der lipophilen und hydrophilen Extraktstoffe in den Zapfen von fünf verschiedenen, in der Türkei beheimateten Nadelbaumarten (Pinus halepensis, P. brutia, P. pinea, P. sylvestris und P. nigra.). Der höchste Anteil an mittels Gaschromatograph ermittelten lipophilen Extraktstoffe wurde in P. brutia (35,1 mg g−1) und P. halepensis (31,3 mg−1) nachgewiesen, während Pinus sylvestris (9,0 mg g−1) den niedrigsten Anteil aufwies. Der wichtigste lipophile Bestandteil waren in allen Zapfen die Harzsäuren. Die vorwiegenden Harzsäuren waren Abietinsäure in P. pinea, P. halepensis und P. brutia, Dehydroabietinsäure in P. sylvestris sowie Isopimarsäure in P. nigra. Die gravimetrischen Werte der gesamten hydrophilen Extraktstoffe waren vergleichbar mit denen der lipophilen Extraktstoffe, wobei Zucker und Zuckeralkohol die dominante Gruppe waren.
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Acknowledgements
The authors wish to express their thanks to Prof. Dr. Bjarne Holmbom, Laboratory of Wood and Paper Chemistry, Åbo Akademi, Turku, Finland for his scientific support. This work is part of a project supported by Scientific and Technical Research Council of Turkey (TÜBITAK).
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Kilic, A., Hafizoglu, H., Dönmez, I.E. et al. Extractives in the cones of Pinus species. Eur. J. Wood Prod. 69, 37–40 (2011). https://doi.org/10.1007/s00107-010-0421-2
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DOI: https://doi.org/10.1007/s00107-010-0421-2