O Linalool

Figure 1. Vapor pressure vs. temperature curves of important components of orange essential oil (0 0) a-pinene, ( - ) d-limonene, ( A - A ) myrcene, ( o - o ) linalool, ( - ) a-terpineol, ( - ) decanal, ( A - A ) a-citral (Data from (38)).

Menthol, linalool, citronellol, geraniol, o-ter-pineol, cinnamic alcohol etc. 

Chen. Determination of trace germanium in herbal medicine by graphite fur nace atomic absorption spectrometry. Fenxi Shiyanshi 1991 10( 1) 30-31,34-Owuoe, P. O. Differentiation of teas by the variations of linalool and geraniol contents. Bull Chem Soc Ethiopia 1989 3(1) 31-35. 

Important aroma compounds of black currant berries have been identified mainly by GC-O techniques by Latrasse et al. [119], Mikkelsen and Poll [115] and Varming et al. [7] and those of black currant nectar and juice by Iversen et al. [113]. The most important volatile compounds for black currant berry and juice aroma include esters such as 2-methylbutyl acetate, methyl butanoate, ethyl butanoate and ethyl hexanoate with fruity and sweet notes, nonanal, /I-damascenone and several monoterpenes (a-pinene, 1,8-cineole, linalool, ter-pinen-4-ol and a-terpineol) as well as aliphatic ketones (e.g. l-octen-3-one) and sulfur compounds such as 4-methoxy-2-methyl-butanethiol (Table 7.3, Figs. 7.3, 7.4, 7.6). 4-Methoxy-2-methylbutanethiol has a characteristic catty note and is very important to blackcurrant flavour [119]. 

Blueberry consists of cultivated highbush blueberries Vaccinium corymbo-sum) and wild lowbush blueberries Vaccinium august ifolium). The aroma of cultivated and wild blueberries is dominated by long-chain alcohols, esters and terpenoids. Forney [43] reported that y-butyrolactone, a-terpineol, 6-ethyl 2,6-decadiene-4,5-diol, linalool, benzaldehyde and 2-ethyl-2-hexenal contribute to the aroma of fresh, whole highbush blueberries using GC-O analysis. In... 

More recently, several aroma compounds were isolated from cupuacu pulp by vacuum distillation, solid-phase extraction, and simultaneous steam distil-lation-extarction and were analysed by GC, GC-MS, and GG-O [8]. The olfaction of the extracts obtained by solid-phase extraction indicated linalool, a-ter-pineol, 2-phenylethanol, myrcene, and limonene as contributors of the pleasant floral flavour. In this study, the esters ethyl 2-methylbutanoate, ethyl hexanoate, and butyl butanoate were involved in the typical fruity characteristics. 

Conyza canadensis (L.) Cronq. Xiao Fei Peng (aerial part) Essential oils, matricaria ester, dehydromatricaria ester, linoleyl acetate, limonene, linalool, centaur X, dephenyl methane-2-carboxylic acid, cumulene, O-benzylbezoic acid.48 Relieve swelling, itchiness, treat intestine and liver infection, a detoxicant, externally for skin eczyma, wounds, pain caused by arthrritis, toothache. 

Eupatorium chineme L. var. simplicifolium (Malcino) Kitam. E. lindleyanum DC E. japonicum Thunb. Zi Lan (Thorowort) (whole plant) Cumarin, O-cumaric acid, lactones, rhymohydroquinone, volatile oil, euparin, bornyl acetate, dimethyl thymohydroquinone, linalool.48 Sedative in disturbances of pregnancy and puerperium. Carminative, diuretic, vermifuge. 

China Agastache rugosa (Fisch. Mey.) O. Kuntze Essential oils, methylchavicol, anethole, anisaldehyde, d-limonene, hexenol, calamene, beta-pinene, p-methoxycinnamaldehyde, d-pinene, octanol, cymene, linalool, elemene, caryophyllene, farnesene.48 Chest congestion, diarrhea, headache, nausea, antipyretic, carminative, febrifuge, stomachic. 

The reaction of geraniol, nerol and linalool in the presence of VO(acac)2 -Me3SiOOSiMe3 in dichloromethane at 25 °C gave o -terpineol as the main product35. 

One of the important processes for manufacturing linalool is from the (3 - me thylhep ten o ne intermediate produced by the methods from petrochemical sources discussed earlier. For example, addition of sodium acetylide to (3-methylheptenone gives dehydrolinalool (4), which can be selectively hydrogenated, using a Lindlar catalyst, to produce linalool. 

Fig. 2.4. Chromatographic profiles of volatiles emitted by four plant species at different time periods after an attack by Spodoptem littoralis larvae. The labeled peaks are 1, (Z)-3-hexenal 2, ( )-2-hexenal 3, (Z)-3-hexenol 4, (Z)-3-hexenyl acetate 5, linalool 6, ( )-4,8-dimethyl-1,3,7-nonatriene 7, indole 8, ( )-/ -caryophyllene 9, ( ,)-o -bergamotene 10, ( >/3-farnesene 11, ( , )-of-farnesene 12, nerolidol 13, ( , )-4,8,12-trimethyl-1,3,7,11-tridecatetraene 14, of-pinene 15, /3-pinene 16, -myrcene 17, D-limonene 18, ( )-/3-ocimene 19, -sesquiphellandrene 20, germacrene D. Two internal standards, -octane and nonyl acetate, are labeled with IS1 and IS2, respectively.

Many essential oils contain esters (mostly acetates) of alcohols of the formulae C10HlsO (borneol, geraniol, terpineol, linalool), C H O (menthol, citronellol), C1SH240 (santalol). When boiled with alcoholic potash, these esters are hydrolysed (saponified) and yield the free alcohol and the potassium salt corresponding with the acid of the ester. Thus, the volatile oils containing esters have saponification numbers, which may be determined in a manner analogous to that used for fatty matters. 

Air freshener a-pinene, limonene, myrcene, linalool, octanal, 8, 14, 15 nonanal, a-terpineol, decanal, ocimene, linalylacetate, styrene, chloromethane, propylene, o-dichlorobenzene... 

Elisabetsky, E., Brum, L. F., and Souza, D. O. (1999). Anticonvulsant properties of linalool in glutamate-related seizure models. Phytomedicine 6, 107—113. 

The volatiles of fresh leaves, buds, flowers and fruits were isolated by solvent extraction and analysed by capillary gas chromatography-mass spectrometry. Their odour quality was characterized by gas chromatography-olfactometry—mass spectrometry (HRGC-O-MS) and aroma extract dilution analysis (AEDA). In fresh bay leaves, 1,8-cineole was the major component, together with a-terpinyl acetate, sabinene, a-pinene, P-pinene, P-elemene, a-terpineol, linalool and eugenol. Besides 1,8-cineole and the pinenes, the main components in the flowers were a-eudesmol, P-elemene and P-caryophyllene, in the fruits (EJ-P-ocimene and biclyclogermacrene, and... 

Identification The infrared absorption spectrum of the sample exhibits relative maxima at the same wavelengths as those of a typical spectrum as shown in the section on Infrared Spectra, using the same test conditions as specified therein. Assay Not less than 82.0% and not more than 92.0% of total alcohols, calculated as linalool (C H O). 

Figure 9. Structures of additional glycoconjugates isolated from Riesling wine during this study B-D-glucopyranosides of 3-methylbutanol 21, 2-methyl-butanol 22, benzyl alcohol 23, 2-phenylethanol 24, furanoid linalool oxides (two diastereoisomers) 25, pyranoid linalool oxides (two diastereoisomers) 27, 3-oxo-7,8-dihydrc>-a-ionol 28, 3-oxo-a-ionol 29, 4,5-dihydro-vomifoliol 30, vomifoliol 31, and 7,8-dihydro-vomifoliol as well as the 6-O-B-D-apiofurano-syl-fi-D-glucopyranosides of furanoid linalool oxides (two diastereoisomers).

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