THE HEARTWOOD EXTRACTIVES OF PINUS RESINOSA AIT•

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Abstract
The acetone extract of red pine heartwood was found to contain mainly pinosylvin monomethyl ether, oleic, linoleic, dehydroabietic, and isopimaric acids, and triglycerides of unsaturated fatty acids. Smaller amounts of pinosylvin, β-sitosteryl esters, and benzoic acid were isolated. Palmitic, palmitoleic, stearic, linoleic, pimaric, sandaracopimaric, abietic, neoabietic, vanillic, and three unidentified acids, as well as pinocembrin, vanillin, and eleven trace components were recorded by gas–liquid chromatography. A small amount of steam volatile oil, which may have taxonomic significance, was isolated. α-Pinene, β-pinene, myrcene, limonene, γ-terpinene, terpinolene, camphor, cis-p-menthan-8-ol, terpinen-4-ol, and α-terpineol were tentatively identified.Besides glucose and xylose, the methanol extract contained polylignan fractions similar to those which had been isolated previously from jack pine.

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