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Published:Journal of Chromatographic Science,
ISSN 0021-9665Volume 41, Number 7, August 2003, pp. 385-389
A Comparative Study of the Ability of Different Techniques to
Extract Menthol from Mentha piperita
María Luisa Ruiz del Castillo, Guillermo Santa-María,
Marta Herraiz*, and Gracia P. Blanch
Instituto de Fermentaciones Industriales, Consejo Superior de Investigaciones
Científicas (CSIC), c/Juan de la Cierva 3, 28006 Madrid, Spain
Supercritical fluid extraction, direct thermal desorption, hydroalcoholic
extraction, and atomization are used to extract menthol from leaf plants of
Mentha piperita. The investigated methods are comparatively evaluated on the
basis of their reliability to determine the enantiomeric distribution of menthol.
The enantioselectivity required for the gas chromatographic analysis is achieved
using Octakis (2,6-di-O-n-pentyl-3-O-butyryl)-c-cyclodextrin as the stationary
phase. From the obtained results, it is established that there is a significant
effect of the combination of pressure and temperature to achieve the effective
isolation and fractionation of the less and most volatile compounds using supercritical
fluids.
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