Affiliations: Huê University, 34 Le Loi, Huê, Vietnam | Center for Education and Development of Chromatography, EDC Vietnam, 3 Giai Phóng Street, Hai Bà District, 10000 Hanoi, Vietnam | Université de Corse, Equipe Chimie et Biomasse, CRES‐URA CNRS 2053, Route des Sanguinaires, 20000 Ajaccio, France | Laboratory of Instrumental Analysis, Department of Chemical Engineering, Eindhoven University of Technology, P.O. Box. 513, 5600 MB Eindhoven, The Netherlands
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.
Journal: Spectroscopy, vol. 13, no. 2, pp. 131-136, 1997
