On the Essential Oil Components from Humulus lupulus L. var. neomexicanus Nels. & Cockerell. I. Contribution

Author:

Knobloch Karl1,Paulini Hubert1,Eley Claudia2,Eley James H.2,Ziegler Erich3,Brandauer Herbert3,Michaelis Karl4,Vostrowsky Otto4

Affiliation:

1. Institut für Botanik und Pharmazeutische Biologie der Universität Erlangen-Nürnberg, Schlossgarten 4, D-8520 Erlangen, Bundesrepublik Deutschland

2. Department of Biology, University of Colorado, Colorado Springs, Colorado 80907, USA

3. Wissenschaftliche Laboratorien der Aroma-Chemie, D-8551 Aufsess, Bundesrepublik Deutschland

4. Institut für Organische Chemie der Universität Erlangen-Nürnberg, Henkestr. 42, D-8520 Erlangen, Bundesrepublik Deutschland

Abstract

Abstract The essential oil of strobiles from Humulus lupulus L. var. neomexicanus Nels. & Cockerell, grown in the semi-arid climate of Central Colorado, was isolated by steam distillation. A characteristic seasonal dependence of oil production was observed over two vegetation periods. - The main components of the essential oil were identified structurally by means of GC and GC-MS analysis. About 40 different compounds, including monoterpenoic hydrocarbons and alcohols, ketones, methylesters of saturated and unsaturated carboxylic acids were detected. Other sub­ stances were esters of short chain acids with monoterpene alcohols, plus sesquiterpene hydro­carbons.

Publisher

Walter de Gruyter GmbH

Subject

General Biochemistry, Genetics and Molecular Biology

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