Book Review: Essential Oils Analysis by Capillary Gas Chromotography and Carbon-13 NMR Spectroscopy

Abstract

Recent advances in capillary gas chromatographic techniques and in cmr spectroscopy have greatly assisted in the analysis of complex mixtures of volatile natural products and in structural assignment of new natural products. In this monograph, the authors, who are employed at Bruker Analytische Messtechnik and in the Department of Pharmaceutical Biology at the University of Würzburg, respectively, present extensive charts showing the capillary gas chromatograms and cmr spectra of a variety of essential oils and their constituents.

Infraspecific chemical variability of the essential oil ofLavandula dentata L. from Algeria

“…13 C-NMR was carried out on the whole sample, without previous separation of the components, 13 according to a computerized method developed in our laboratory which has been successfully applied to the analysis of several essential oils. 14,15 The identification is based on comparison of the resonances in the mixture with those of the reference spectra compiled in our spectral library with the help of laboratory-produced software.…”

Mechanism of Inhibition of Lipid Peroxidation by γ-Terpinene, an Unusual and Potentially Useful Hydrocarbon Antioxidant

“…Much more recently, it has been demonstrated that essential oils have antibacterial, antimycotic, and, in a number of cases, antioxidant activities (3)(4)(5), which opens the possibility of using these oils as preservatives for food and cosmeticssat least where "their use is not in contrast with their aroma" (6). Essential oils are complex mixtures containing mono-and sesquiterpenes, oxygenated terpenes, phenols, and other compounds (7,8). Their antioxidant activity is not surprising in view of the presence of phenols, ArOH, since it is well-known that almost all phenols can function as antioxidants of lipid peroxidation because they trap the chain-carrying lipid peroxyl radicals, LOO • (9).…”

Composition and chemical variability of the bark oil of Cedrelopsis grevei H. Baillon from Madagascar

“…19 (b) on computer matching with commercial mass spectral libraries 20,21 and comparison of spectra with those of our own library or literature data; 19,22,23 and (c) by 13 C-NMR following the methodology first reported by Formácek and Kubeczka 24 and improved and computerized in our laboratory.…”