Combination of capillary GC, GC/MS and 13C-NMR for the characterization of the rhizome oil of Piper betle L. (Piperaceae) from Vietnam

L. Thanh, N.X. Dung, A. Bighelli, J. Casanova, P.A. Leclercq

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Abstract

The essential oil from the rhizomes of Piper betle L. (betel), collected around Hue, was obtained in 0.20% yield. The oil was examined by a combination of capillary GC and GC/MS. 13C-NMR studies confirmed the structure assignments proposed by retention data and mass spectra of the components with a content higher than 1%. In some instances the structure elucidation based on GC and GC/MS data had to be corrected. More than forty constituents were found of which the major ones were \alpha-cadinol (26.2%), \delta-cadinene (11.7%), and about equal amounts of T-cadinol and T-muurolol (unseparated, together 20.7%). This study clearly illustrates the advantage of complementary identification techniques.
Original languageEnglish
Pages (from-to)131-136
JournalJournal of Spectroscopy
Volume13
Issue number2
DOIs
Publication statusPublished - 1997

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