Abstract
Selected leaf and fruit spices were steam decontaminated by original continuous process. Aroma compounds of spices were analyzed before and after decontamination. A total of identified 24 volatiles were identified in marjoram, 21 volatiles in thyme, 8 volatiles in caraway and 14 in coriander, as it was also mentioned by other authors. The GC/O analysis showed that the primary compounds responsible for aroma in analyzed spices were linalool and cis-sabinene hydrate in marjoram, thymol in thyme, carvone in caraway and linalool in coriander, which received the highest dilution factor values (FD) both before and after decontamination. It was determined that the content of the main odorants may be estimated by a SPME/GC method. On the basis of these compounds it was found that steam decontamination caused considerable losses in leaf spices. No significant changes were found in the content of volatile compounds in fruit spices as a result of decontamination. Also, chiral analysis of key odorants in spices did not show changes in the enantiomeric distributions (linalool in marjoram, carvone in caraway and limonene in coriander) as a result of decontamination.
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