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The chemical composition of essential oils of Silphium perfoliatum L.
Author(s) -
Kowalski R.,
Wolski T.
Publication year - 2005
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.1418
Subject(s) - sesquiterpene , chemistry , essential oil , rhizome , monoterpene , chemical composition , botany , organic chemistry , food science , biology
The content and chemical composition of essential oil of leaves, inorescences and rhizomes of Silphium perfoliatum L. were studied in this paper. The mean content of oil in leaves amounted to 0.19% v/w per dry matter; inorescences contained 0.27% v/w of oil per dry matter, while the rhizomes contained 0.41% v/w. Qualitative and quantitative analysis of distilled oils were carried out using the GC and GC–MS technique. The chemical composition of the essential oils obtained from inorescences and leaves is quite similar, although in the inorescence oil the dominant constituent is the bicyclic monoterpene α ‐pinene (16.0–20.9%), and in the leaf oil the prevailing components are the bicyclic sesquiterpene caryophyllene oxide (8.5–34.7%) and the monocyclic sesquiterpene germacrene D (6.4–24.3%). In the rhizome oil from Silphium perfoliatum L., the dominating compounds are the tricyclic sesquiterpenes 7‐ β ‐ H ‐silphiperfol‐5‐ene (5.7–14.9%), isocomene (2.8–14.4%), modhephene (2.3–9.9%), 7‐ a ‐ H ‐silphiperfol‐5‐ene (1.2–9.7%), which considerably differentiates this oil from those obtained from the leaves and inorescences. Copyright © 2004 John Wiley & Sons, Ltd.