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198 Results
Type: Article
Section: Fragrance > Regulatory & Research
Ingredients
Detection of new trace constituents in the essential oils of Cymbopogon flexuosus
The essential oil of lemongrass is derived chiefly from two important species of Cymbopogon, C. flexuosus, which has been the subject of numerous investigations, and C. citratus, C. flexuosus (Stend.) Wats (sym. Andropogon nardus var. flexuosus Hack), is native to India. Its two strains, SD-68 and OD-19, which have been cultivated at our Kukrail Research Farm, Lucknow, were examined by gas chromatography and the presence of new trace constituents was established for the first time.
Ingredients
A New Method of Separation of Citral from Lemongrass Oil
Although many methods are known for the separation of citral from lemongrass (Cymbopogen flexuosus) oil, like fractional distillation, adduct formation and regeneration, the purity and the yield of citral as separated are not satisfactory. A new method for separation of citral in pure form and in near quantitative yield uses the column chromatographic technique. This method may also be adapted for large scale separation of citral and hence can be of commercial importance.
Ingredients
Progress in Essential Oils: Clary Sage Oil
The author discusses the chemical components of clary sage oil.
Ingredients
Material Review: Clary Sage Oils
Variation in composition and enantiomeric analyses of commercial vs. new Kashmir clary sage oils. Commercial clary sage oils were analyzed along with a newly available Kashmir oil (Himalayan Foothills Oils, Srinagar, India). All of the oils were high in linalool (14.7–25.1%) and linalyl acetate (55.0–72.4%).
Ingredients
Progress in Essential Oils: Lemon Verbena Oil
This month's column discusses the chemical composition of lemon verbena oil.
Ingredients
Is Cineole Detrimental to TeaTree Oil?
This paper evaluates the claims about cineole in tea tree oil and reviews the results of recent skin irritancy and bioactivity investigations which show that cineole is neither an irritant nor an antagonist.
Regulatory & Research
Pattern Recognition Methods for Discrimination of Essential Oils (Rose Oils) by Their Gas Chromatograms
It is possible to distinguish between essential oils of the same type and their mixtures by analysing their gas chromatograms using a pattern recognition method.
Regulatory & Research
New compounds with small rings in essential oils
Despite the continuing discovery of new synthetic fragrance raw materials, essential oils still remain the other half of the foundation of perfumery. Consequently, the analysis of essential oils is still very much of interest, as is illustrated by the excellent series of articles by Lawrence in this journal. We now wish to report a number of products containing small (three-, four-, and five-membered) rings, most of which are found for the first time in essential oils. These products were isolated by chemical group separation, liquid and gas chromatography, whereupon the structures were determined by mass, infrared and NMR spectroscopy. All structures were confirmed by synthesis. The essential oils used were obtained from regular commercial sources.
Ingredients
Progress in Essential Oils: Sweet Fennel Oil and Extract
In this column, Brian M. Lawrence reviews the composition of sweet fennel oil and extract as found by various researchers. For example, a commercial sample of sweet fennel oil was screened for its anti-platelet activity by Tognolini et al. (2006) and Guerini et al. (2006) using GC-FID and GC/MS. Results are reported herein.
Ingredients
Comparative Investigations of the Essential Oil and Volatiles of Spearmint
The objective of this work is to identify the fragrance compounds of this oil and its SPME-headspace by means of gas chromatographic- spectroscopic (GC and GC/MS using different polar and chiral phases) and olfactoric methods (GC-sniffing technique and olfactory correlations) to find out the importance of each single constituent with their specific odor attributes, responsible for the characteristic and pleasant spearmint aroma for the first time.
Ingredients
Progress in Essential Oils
Sage oil and Wild African Sage Oil.
Regulatory & Research
Clove Oil Derivatives: The Case of U.S. Natural Vanillin Authentication
Uncovering the nuances of vanillin sourcing and natural vanillin ex clove authentication.
Regulatory & Research
Gas-Liquid Chromatography Analysis of Fennel and Wormwood Oils
Part 1 of 2: Fingerprint GLC of three of five ketone-containing essential oils.
Regulatory & Research
Application of Gas-Liquid Chromatography to the Analysis of Essential Oils
Fingerprint GLCa of selected Texas, Virginia, China, Atlas and Himalaya cedarwood essential oils intended for REACH registration.
Regulatory & Research
Application of Gas-Liquid Chromatography to the Analysis of Essential Oils
Part 3 of 3: Fingerprint chromatographs of esters-containing essential oils: neroli oil, petitgrain bigarade oil and petitgrain oil Paraguay.
Ingredients
Comparison of isolation procedures for essential oils. IV. Leyland cypress
In this paper the results of a comparable investigation on the volatile leaf oil of the Leyland cypress, x Cupressocyparis leylandii (Dall. & Jacks.) Dall. (Cupressaceae) will he considered.
Regulatory & Research
Essential Oil Essential Oil Research and Symposia 1969-1989
The time is ripe, perhaps, to review the development which has taken place since the Essential Oil Symposium started in 1969—and try to see a little ahead. The aims of the symposia should be as before: namely, to bring together scientists who are interested in all aspects of essential oil research, for discussions of common problems and presentation of their results, to the benefit of essential oil research in general.
Ingredients
Unsaturated Components in the Essential Oil of Anthemis nobilis L. (Roman Chamomile)
French authors recently presented their analytical findings on the oil using the negative chemical ionization technique in mass spectrometry. They tracked the GLC profile of the complete oil with the mass numbers of the quasi-molecular ions [M-H]- in combination with the carboxylate anion RCOO-. Thereby inter alia the presence of five esters derived from methacrylic or crotonic acid was reported, however, without giving definite structural assignments for the individual components. The same holds for eight esters of the angelate or tiglate type, respectively. We have worked in a more traditional way and wish here to present the results concerning some of these methacrylates, crotonates, angelates and tiglates. All esters mentioned by us have proved by comparison with authentic synthetically prepared samples.
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