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Volatile constituents of different organs of Psoralea bituminosa L.
Author(s) -
Bertoli Alessandra,
Menichini Francesco,
Noccioli Cecilia,
Morelli Ivano,
Pistelli Luisa
Publication year - 2004
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.1315
Subject(s) - camphene , chemistry , monoterpene , essential oil , composition (language) , caryophyllene , sesquiterpene , botany , food science , chromatography , organic chemistry , biology , linguistics , philosophy
The essential oil and SPME samples of the leaves, owers and seeds of Psoralea bituminosa L. were analysed by GC and GC–MS. We have investigated also the presence of monoterpene or aliphatic alcohol glucosides. The essential oils showed both qualitative and quantitative differences. The main constituents of the leaf and the ower essential oils were caryophyllene (23% and 18%, respectively), β ‐farnesene (15% and 6%, respectively), and germacrene D (24% and 18%, respectively). Signicant amounts (7%) of the same compounds were also directed in the seed essential oil, but tricyclene (11%) and α ‐pinene (50%) were the most important constituents of this oil. The volatile fractions of remaining leaf aqueous extracts after treatment with β ‐glucosidase revealed qualitative differences in comparison with the composition of the corresponding essential oils, and high levels of 3‐hexen‐1‐ol (37%) and 1‐octen‐3‐ol (27%) were observed. The SPME analysis of the fresh leaves, owers and seeds of P. bituminosa conrmed the qualitative composition of the volatile oils, even if we detected signicative differences in the percentage ratio between monoterpenes and sesquiterpenes in comparison with the oils, where sesquiterpenes were the main components. In fact the variation of the monoterpenes, tricyclene, α ‐pinene and camphene between the leaf oil and the corresponding headspace sample was remarkable: tricyclene increased from 0.1% to 8%, α ‐pinene from 0.1% to 16% and camphene from 0.3% to 10% in the SPME samples. Copyright © 2004 John Wiley & Sons, Ltd.