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Volatile aromatic substances analysis of different temperature stored 'Docteur Jules Guyot' pear (<i>Pyrus communis</i> L.). [PDF]
Front Plant SciShi X +7 more
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Bioactive Plant Compounds as Alternatives Against Antifungal Resistance in the <i>Candida</i> Strains. [PDF]
PharmaceuticsDantas TDS +3 more
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Terpenes and terpene derivatives-22
Tetrahedron, 1987Abstract Isocanambrin ( 1 ) and 6-epi-isocordilin ( 21 ) were synthesized by twofold application of a reaction sequence starting from an α, β-unsaturated carbonyl compound via Wittig-Horner reaction , selective hydrogenation, epoxidation, and solvolysis to give a hydroxy-γ-lactone. Thus, aldehyde 4 was converted (→ 5 ,→ 8 ,→ 9
Peter Weyerstahl +3 more
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Biotechnology Advances, 2006
The main application of terpenes as fragrances and flavors depends on the absolute configuration of the compounds because enantiomers present different organoleptic properties. Biotransformations allow the production of regio- and stereoselective compounds under mild conditions. These products may be labeled as "natural".
M. Manuela R. da Fonseca +1 more
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The main application of terpenes as fragrances and flavors depends on the absolute configuration of the compounds because enantiomers present different organoleptic properties. Biotransformations allow the production of regio- and stereoselective compounds under mild conditions. These products may be labeled as "natural".
M. Manuela R. da Fonseca +1 more
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Biochimica et Biophysica Acta, 1961
Abstract Chromatography of peppermint oil terpenes on silicic acid chromatoplates, using hexane containing ethyl acetate as the developing solvent, effectively separates known constituents of the oil. A sequence of examinations of the plates makes possible the detection and recovery of numerous components of commercial peppermint oil and of extracts ...
R.L. Dunning, W.D. Looms, J. Battaile
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Abstract Chromatography of peppermint oil terpenes on silicic acid chromatoplates, using hexane containing ethyl acetate as the developing solvent, effectively separates known constituents of the oil. A sequence of examinations of the plates makes possible the detection and recovery of numerous components of commercial peppermint oil and of extracts ...
R.L. Dunning, W.D. Looms, J. Battaile
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ChemInform Abstract: CARBONYLATION OF TERPENES [PDF]
Chemischer Informationsdienst, 1979 1. The most active and selective catalysts for carbonylation of L-menthol, D,L-menthol, p-menthene, and 2,6-dimethyl-2,7-octadiene are BF3·2C2H5COOH, BF3·2CH3COOH, BF3·2CH2C1COOH, BF3·2CH2C1COOH, and BF3·2CH2C1COOH-BF3·2CH3COOH (3∶1). 2. The primary products of the carbonylation of L-menthol, D,L-menthol, and p-menthene-1 are trans- and ...
K. G. Ryabova +4 more
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1982
Terpene kommen vor allem in Harzen und atherischen Olen vor. Sie werden in der Riechstoffindustrie zur Herstellung von Parfumen und zur Parfumierung von Waschmitteln und Kosmetika verwendet.
Hans Peter Latscha +2 more
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Terpene kommen vor allem in Harzen und atherischen Olen vor. Sie werden in der Riechstoffindustrie zur Herstellung von Parfumen und zur Parfumierung von Waschmitteln und Kosmetika verwendet.
Hans Peter Latscha +2 more
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Chromatostrip isomerization of terpenes
Journal of Chromatography A, 1965Abstract Isomerization of the monoterpene hydrocarbons of black pepper oil occurred during isolation by thin-layer chromatography. α-Thujene, α-pinene, β-pinene, myrcene, 3-carene, limonene, β-phellandrene, ψ-terpinene, terpinolene and p -cymene were each eluted from chromatostrips and were all found to chromatograph without change.
R.E. Worlstad, Walter Jennings
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Autoxidation of terpenic aldehydes—I
Tetrahedron, 1973Abstract The influence of steric factors on the autoxidation of aldehydes having tertiary formyl groups has been investigated. These afford nor-derivatives by loss of carbon monoxide, and carboxylic acids. Steric interactions have been shown to affect strongly the ratio between carboxylic acid and nor-derivatives and, in addition, to increase the ...
R. Caputo +3 more
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2005
Publisher Summary Terpenes are widely spread in nature, mainly in plants as constituents of essential oils. Some terpenes are pure hydrocarbons, but there are also terpenes with hydroxyl functions and carbonyl functions. Terpenes provide plants and flowers fragrance.
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Publisher Summary Terpenes are widely spread in nature, mainly in plants as constituents of essential oils. Some terpenes are pure hydrocarbons, but there are also terpenes with hydroxyl functions and carbonyl functions. Terpenes provide plants and flowers fragrance.
openaire +3 more sources