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A method for the extraction of valuable compounds from plants and flowers (viz. laurel, rosemary, thyme, oregano and tuberose) is proposed. The dynamic approach allows go-and-backward circulation of the extractant (ethanol) through the solid sample subjected to the action of an ultrasound probe (thus reducing sample amount and avoiding overpressure). A multivariate optimisation study and application...
The present study deals with the use of metal oxide gas sensors and the headspace techniques for microencapsulated essential oils of thyme, oregano and cassia. The volatile compounds released from the microencapsulated flavours were tested by an array of the gas sensors. The features of individual odours were described using an analysis of the transient responses of the sensors to the aroma. The coating...
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