D-Linalool

Detailed study of the coriander spice oil composition showed that the d-linalool content ranged from 60 to 70% and the hydrocarbon content was about 20%. a- and (3-pinenes, dipentene (limonene), p-cymene, a- and y-terpinenes, n-decanal, geraniol and 1-borneol were also identified as constituents of the spice oil. 

During distillation of the spice, a number of transformations may occur in the composition of the volatile oil. Small quantities of p-cymene may be produced as an artefact, linalyl acetate and some other esters may be hydrolysed and d-linalool may rearrange to its optically inactive isomer geraniol. Potter et al. (1993) found structural similarity in the compounds of Polygonum odoratum to that of C. sativum. 

Examples of essential oil compounds showing these different odours include d-limonene, which has a dull citrus odour while /-limonene has a turpentine odour similarly, d-linalool has a floral, woody (lavender-like) odour, while /-linalool has a floral (petitgrain-like) odour. 

CORIANDER, Coriandri fructus and aetheroleum Coriander is the schizocarp of Coriandrum sativum L., family Apiaceae, growing in the Eastern Mediterranian region and now cultivated in Southern Europe, Georgia and India. The globe-shaped fruit contains essential oil with the principal ingredients D-linalool (60-70%) and [Pg.48]

Oil of Cbriander. Volatile oil from dried ripe fruit of Coriandrum sativum L., Umbelliferae. Constit. Chiefly d-linalool and its acetate. 

CS018 Moon, ]. H., N. Watanabe, Y. Ijima, A. Yagi and K. Sakata. Cis-and trans-linalool 3,7-oxides and methyl salicylate glycosides and (Z)-3-hexenyl beta-D-glucopyranoside as aroma precursors from tea leaves of oolong tea. Biosci Biotech Biochem 1996 60(11) 1815-1819. 

Nine compounds from branches with leaves and green fruit from apple consistently elicited an antennal response in codling female moths (Cydia po-monella, Lepidoptera), including methyl salicylate, ( )-/3-farnesene, /3-caryo-phyllene, 4,8-dimethyl-f,3( )-7-nonatriene, (3Z)-hexenol, (Z, )-a-farnesene, ( , )-a-farnesene, linalool and germacrene D [378]. 

Approximately 75 volatile compounds have been identified in juices prepared from plums Prunus domestica) [35]. Lactones from Ce to C12 are the major class of compound in plums [78]. The distribution of plum lactones differs from that found in peaches in that the C12 y-lactones are found in higher concentrations than the corresponding Cio y-lactones and d-decalactone (Fig. 7.2) [78]. GC sniffing has uncovered benzaldehyde, linalool, ethyl nonanoate, methyl cin-namate, y-decalactone and d-decalactone as volatile compounds contributing to plum juice aroma (Table 7.2, Figs. 7.1, 7.2, 7.4, 7.5) [35]. 

The determination of 5 Gv-pdb and d Hv sMow values of synthetic and natural linalool and linalyl acetate using IRMS has been reported by different authors [76-81]. With use of a pyrolysis interface, the determination of isotope... 

A reliable authenticity assessment is concluded from the simultaneous consideration of multielement IRMS and enantioselective analysis. The differences of the stable isotope ratios of linalool and linalyl acetate are depicted as a three-dimensional plot of A values (d values of linalool minus d values of linalyl acetate for oxygen, hydrogen and carbon) (Fig. 17.15). This plot shows that the commercial samples S1-S5 are different from all the other samples investigated. Linalool and linalyl acetate of S1-S5 definitely are not genuine lavender oil compounds. 

Amomum cardamomum L. A. globosum Lour. A. tsao-ko Roxb. A. villosum L. A. xanthloides Wall. Bai Dou Ku Cao Guo Shan Ren (Siam cardamon, Chinese cardamon) (seed) d-Borneol, bomeol acetate, d-camphor, linalool, nerolidol, terpene.50 Treat pyrosis, vomiting, dyspepsia, pulmonary diseases. Antitoxic, antiemetic, carminative, stomachic. 

Tagetes erecta L. Chou Fu Yong (Marigold) (leaf, flower) Alpha-terthienyl, d-limonene, 1-linalool, tagetone, n-nonyl aldehyde.50 Treat sores and ulcers, cold, conjuctivitis, cough, mastitis, mumps. 

Zingiber officinale Roscoe China Essential oils, zingiberol, zingiberene, phellandrene, camphene, citral, linalool, methylheptenone, nonylaldehyde, d-bomeol, gingerol.53 Anti-inflammatory, stimulates gastric secretion. 

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. 

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.

This is obtained from the skins of the fruit of Citrus bergamia and is a greenish or greenish yellow liquid with a peculiar fragrant odour. It contains d-limonene, dipentene linalyl acetate (33-45%) which is the chief constituent determining its value free linalool an odourless stearoptene, termed bergaptene (about 5%) small proportions of fatty, resinous and waxy substances. 

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