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Type: Article

Section: Fragrance > Regulatory & Research

Spectroscopic characterisation of a rare monoterpene from Blumea Mollis

Beginning with earlier studies on the essential oil separated from different species of Blumea, this material has been the subject of many chemical and biological investigations. Chemical investigations of the oils of different Blumea species have afforded different terpenoids. Thus the oil of Blumea eriantha has a major constituent, d-carvotanacetone; oil of Blumea lacera contains the cineol, d-fenchone and citral; oil of Blumea malcolmii yielded d-carvotanacetone and 1-tetrahydrocarvone; and the oil of Blumea membranceae contains 1,4-(8)-p-methadiene; δ-cadinene; 2,3-dimethoxy-p-cymene; 1,2-dimethyl-3-isopropenyl cyclopent-1-en-4-one; 5-hydroxy-p-cymene-2-oxybornylene; 2-methyl-5-isopropyl cyclopent-1-one carbonylic acid methyl ester; and citronellyl acetate. But this monoterpene has not been reported yet.

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Some Aspects Of Qualitative Structure-Odor Relationships

Qualitative odor-structure relationships have been applied for more than a century. The results of these studies are mostly the consequence (outcome) of the application of common sense gathered by experience. Two main features characterize the molecular structures of odorant molecules: “electronicity” (electronic charge distribution over a molecule) and “stereocity” (volume, shape and profile of a molecule).

Some Aspects of Qualitative Structure-Odor Relationships

Qualitative odor-structure relationships have been applied for more than a century. The results of these studies are mostly the consequence (outcome) of the application of common sense gathered by experience.

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Perfume and Flavor Synthetics

Cooperation between the Department of Organic Technology (DOT) at ICT Prague and Aroma Co. began in 1970 with research into problems with benzyl-acetate purity. The cooperative first consisted of an expert consultancy, which gradually grew into a systematic expert-research group focused on fi elds of basic research.

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.

The Influence of Methyl Group Substitution on the Odour of Aliphatic Nitriles

The interesting odour properties of methyl substituted nitriles, coupled with the typical stability/safety properties of nitriles suggest that they will become valuable perfumery materials.

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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.

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Progress in Essential Oils: Lemon Verbena Oil

This month's column discusses the chemical composition of lemon verbena oil.

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Patenting Fragrance Isomers

Making very small changes to a molecule's structure can lead to patentable fragrance compounds.

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Will all of Our Flowers be Gone?

In his speech at the 2016 International Federation of Essential Oils and Trades (IFEAT) conference, Kim Bleimann encourages the industry to take an active exploration of the safety of natural chemical substances (NCS) as entities rather than an admixture of their components.

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Chemical Characterization of Vanilla pompona Scheide, Part IV

Vanilla pompona is resistant to climate change and diseases, and therefore is preferred for hybridization with V. planifolia. Its chemical characterization was carried out in a series of studies, described in this last of four parts.

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The Future of Fragrance: World Perfumery Congress 2016

This year's congress brought together more than 1,100 attendees worldwide to discuss what makes "scents" in fragrance sustainability.

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Discovery of Nympheal: The Definitive Muguet Aldehyde

This is the story of Nympheal, which offers with its diffusive fresh, watery-floral, lily-of-the-valley odor a regulatory robust alternative to the existing muguet aldehydes.

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