use of a non-equilibrated solid phase microextraction method to quantitatively determine the off-notes in mint and other essential oils

The undesirable top notes or off-notes found in mint, clary sage, and cedarwood oils could be quantitatively determined using a non-equilibrated solid phase microextraction/gas chromatography/selected ion monitoring/mass spectrometry (SPME/GC/SIM-MS) technique. Using the low threshold components, di...

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Bibliographic Details
Published in:Journal of the science of food and agriculture 2004-08, Vol.84 (10), p.1223-1228
Main Authors: Coleman, W.M. III, Lawrence, B.M, Craven, S.H
Format: Article
Language:English
Subjects:
Aroma and flavouring agent industries
Biological and medical sciences
cedarwood oil
clary sage oil
cornmint oil
essential oils
Extraction processes
Food industries
Fundamental and applied biological sciences. Psychology
gas chromatography
Herbs
mass spectrometry
Mentha arvensis
Mentha canadensis
Mentha piperita
microextraction
mint
mint oils
off-notes
Oils & fats
peppermint oil
quantitative
Salvia sclarea
solid phase extraction
Solids
spearmint oils
SPME
volatile organic compounds
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Summary:The undesirable top notes or off-notes found in mint, clary sage, and cedarwood oils could be quantitatively determined using a non-equilibrated solid phase microextraction/gas chromatography/selected ion monitoring/mass spectrometry (SPME/GC/SIM-MS) technique. Using the low threshold components, dimethyl sulfide, 2-methylpropanal, 2-methylbutanal, and 3-methylbutanal, which are associated with the off-notes of these oils, their levels could be reproducibly quantitatively determined. The highest level of off-notes was found in a sample of Scotch spearmint oil where the levels of the four constituents were, dimethyl sulfide (238 microgram g-1), 2-methylpropanal (286 microgram g-1), 2-methylbutanal (1048 microgram g-1) and 3-methylbutanal (1489 microgram g-1). These quantitative results in combination with sensory evaluations could provide for a powerful overall assessment of essential oil quality.
ISSN:0022-5142
1097-0010
DOI:10.1002/jsfa.1720