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Chemical composition variability of the essential oil of Conyza canadensis Cronq.
Author(s) -
Lis Anna,
Piggott John R.,
Góra Józef
Publication year - 2003
Publication title -
flavour and fragrance journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.393
H-Index - 70
eISSN - 1099-1026
pISSN - 0882-5734
DOI - 10.1002/ffj.1177
Subject(s) - herb , limonene , chemistry , essential oil , botany , chemical composition , composition (language) , horticulture , medicinal herbs , food science , traditional medicine , biology , organic chemistry , medicine , linguistics , philosophy
The essential oils from different botanical parts (herb, leaves, owers, stems, roots) of Conyza canadensis Cronq. were analysed at various ontogenesis phases. R ‐(+)‐limonene and trans ‐ α ‐bergamotene were the main constituents of the herb, leaf and ower oil at all phases of vegetation. The early owering phases are the best time for harvesting C. canadensis herb, because the oil yield is the highest (0.7–0.8%) and its chemical composition is constant (limonene 80–81%, trans ‐ α ‐bergamotene 6–8%). Limonene was the dominating compound of the oils of European origin (French, Italian, Spanish, Belgian, Bulgarian and Lithuanian). Copyright © 2003 John Wiley & Sons, Ltd.