Comparative Chemical Analysis of the Extractives Constituents in the Bark and Heartwood of Juglans regia L. from North of Iran

  • Seyyed Khalil Hosseinihashemi Department of Wood Science and Paper Technology, Karaj Branch, Islamic Azad University, Karaj, Iran.
Keywords: Heartwood, Bark, Juglone, Benmary bath


Exhaustive ethanol-toluene of the bark and heartwood of Juglans regia L. (Juglandaceae) afforded pale red colored extractives 10 and 12% yields, respectively. Detailed chemical evaluation of these extracts using GC/MS revealed the major components in the bark and heartwood extractives to be the 3,7-dioxa-2,8- disilanonane,2,2,8,8-tetramethyl (25.17%), while the major heartwood extractives constituent was benzoic acid, 3,4,5-tri(hydroxyl)/Gallic acid (44.57%). The same components of the bark and the heartwood also contained amounts of the gallic acid, 3,7-dioxa-2,8-disilanonane, 2,2,8,8- tetramethyl, and d-glucose,2,3,4,5,6- pentakis-o-(hydroxyl). The most toxic components in the heartwood were juglone (5.15%) and 2,7-dimethylphenanthrene (5.81%).


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How to Cite
Hosseinihashemi, S. (2012). Comparative Chemical Analysis of the Extractives Constituents in the Bark and Heartwood of Juglans regia L. from North of Iran. Journal of Advanced Laboratory Research in Biology, 3(2), 99-102. Retrieved from
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