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J Agric Food Chem

Title:		"Differences in the fragrances of pollen, leaves, and floral parts of garland (Chrysanthemum coronarium) and composition of the essential oils from flowerheads and leaves"
Author(s):		Flamini G; Cioni PL; Morelli I;
Address:		"Dipartimento di Chimica Bioorganica e Biofarmacia, Via Bonanno 33, 56126 Pisa, Italy. flamini@farm.unipi.it"
Journal Title:		J Agric Food Chem
Year:		2003
Volume:		51
Issue:		8
Page Number:		2267 - 2271
DOI:		10.1021/jf021050l
ISSN/ISBN:		0021-8561 (Print) 0021-8561 (Linking)
Abstract:		"Headspace analyses of pollen, whole flowerheads, ligulate and tubular florets, flower buds, involucral bracts, and leaves have been performed on the food plant Chrysanthemum coronarium L. (Asteraceae). The analyses permitted differences in the pattern of volatiles emitted by the different floral parts to be observed and the site and phenological stage of emission of these chemicals to be verified. Camphor and cis-chrysanthenyl acetate were emitted mainly by ligulate and tubular florets; the production of myrcene and (Z)-ocimene was higher in the flower buds, whereas beta-caryophyllene, (E,E)-alpha-farnesene, and (E)-beta-farnesene seemed attributable mainly to the involucral bracts. The leaves showed a quite different volatile profile, with (Z)-ocimene as the main constituent. Pollen showed a completely different composition of its volatiles, with perilla aldehyde, cis-chrysanthenyl acetate, and camphor among the principal compounds; many carbonylic compounds and linear hydrocarbons have been detected exclusively in pollen. Furthermore, the essential oils obtained from flowerheads and leaves have been studied. These samples showed mainly quantitative differences. Camphor (22.1%) and cis-chrysanthenyl acetate (19.9%) were the main constituents of the oil from flowers, whereas the oil from the leaves contained mainly (Z)-ocimene (45.4%) and myrcene (28.2%)"
Keywords:		"Bridged Bicyclo Compounds/analysis Camphor/analysis Chromatography, Gas Chrysanthemum/*chemistry Flowers/*chemistry Gas Chromatography-Mass Spectrometry Monoterpenes/analysis Odorants/*analysis Oils, Volatile/*chemistry Plant Leaves/*chemistry Pollen/*che;"
Notes:		"MedlineFlamini, Guido Cioni, Pier Luigi Morelli, Ivano eng Comparative Study 2003/04/03 J Agric Food Chem. 2003 Apr 9; 51(8):2267-71. doi: 10.1021/jf021050l"