Studies on the Chemical Composition of Essential Oil from Sap of Rhus Lac Tree

Abstract

Abstract: The chemical compositions of the essential oil of laccol and urushiol from the sap of Chinese lacquer tree are studied by GPCand GC-MS-DStechniques. The main components of these oils are 3-C₁₅ and 3-C₁₇ alkylcatechols, respectively, which were identified by their standard samples. The most abundant constituents are the monoenyl laccol and the trienyl urushiol. The other components are 4-C₁₅ alkylcatechols and 3-C₁₅ and C₁₇ alkylphenol. More than 98% of the commponents in essential oil were separated and identified by GC. The sap of lacquer tree contains 7%～9% of polymeric urushiol.

Key words: Urushiol, Laccol, Component analysis, Gas chromatography, Mass spectrography

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Du Yumin . Studies on the Chemical Composition of Essential Oil from Sap of Rhus Lac Tree[J]. Chem. J. Chinese Universities, 1990, 11(6): 605.

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Studies on the Chemical Composition of Essential Oil from Sap of Rhus Lac Tree

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