Cyclodextrin derivatives (CDDs) are successful GC enantioselective stationary phases to evaluate essential oils through the enantiomeric composition of their optically active components. The most recent CDDs have greatly enlarged the number of separable racemates and, in many cases, it is now possible to evaluate origin and genuineness of an essential oil through several of its optically active components in a single GC run. Applications of this approach to lavender, lemon, peppermint, rose and iris oils are here described.
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Bicchi et al. (1997) studied this question.