- Valorization of brazilian vetiver (Vetiveria zizanioides (L.) Nash ex Small) oil
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The valorization of extracts from Brazilian vetiver (Vetiveria zizanioides (L.) Nash ex Small) roots was studied. This study took into account the extraction method, the chemical composition of the extracts, their sensorial characteristics, and the possibility of chemical transformations of the product. The performed extraction methods were hydrodistillation and extraction with supercritical carbon dioxide. Some pretreatment methods were tested on the vetiver roots and evaluated in terms of extraction yield, process time, chemical composition, and sensorial properties. Supercritical carbon dioxide extraction resulted in high yield (3.2%) in significantly less time than the other methods. The chemical compositions of the extracts obtained by the different methods were also compared to those of commercial vetiver oils from other sources, showing that Brazilian samples had a greater acid amount. An extraction in basic medium from Brazilian vetiver oil was done to remove its main acid (zizanoic acid), which was chemically transformed into an alcohol (khusimol) of desirable sensorial properties. Sensory evaluation indicated that the Brazilian volatile oil without acid could be used in perfumery and the extract obtained with supercritical carbon dioxide could have application in food.
- Martinez, Julian,Rosa, Paulo T. V.,Menut, Chantal,Leydet, Alain,Brat, Pierre,Pallet, Dominique,Meireles, M. Angela A.
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- New sesquiterpene ethers from vetiver oil
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The four new sesquiterpene ethers 7β,10β-epoxy-4βH-eremophila-1,11(12)-diene (4), 10β,11-epoxy-4βH-eremophil-1-ene (5), 4α,7-epoxy-10βH-spirovetiva-2,11(12)-diene (6) and 6α,12-epoxy-7βH,10αH,11βH-spiroax-4-ene (8) were isolated from the unpolar part of the Haitian Vetiver oil and characterized by their spectral data. VCH Verlagsgesellschaft mbH, 1996.
- Weyerstahl, Peter,Marschall, Helga,Splittgerber, Ute,Wolf, Dietmar
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p. 1195 - 1199
(2007/10/03)
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- INSECT REPELLENTS FROM VETIVER OIL. I. ZIZANAL AND EPIZIZANAL
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On the basis of spectral data and partial synthesis, structures 1 and 2 are established for zizanal and epizizanal, two new insect-repelling aldehydes isolated from Javanese vetiver oil ( Vetiveria zizanoides).
- Jain, Subhash C.,Nowicki, Stephen,Eisner, Thomas,Meinwald, Jerrold
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p. 4639 - 4642
(2007/10/02)
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- Perfume compositions containing tricyclic compounds
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Use of tricyclic compounds, some of which are new, as perfuming and/or flavoring ingredients in the manufacture of perfumes and perfumed products and/or in the preparation of artificial flavors for foodstuffs, animal feeds, beverages, pharmaceutical preparations and tobacco products. Process for the preparation of said tricyclic compounds.
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