Journal
FLAVOUR AND FRAGRANCE JOURNAL
Volume 19, Issue 2, Pages 134-138Publisher
WILEY
DOI: 10.1002/ffj.1274
Keywords
solvent-free; microwave; dry distillation; essential oil; ajowan (Carum ajowan); cumin (Cuminum cyminum); star anise (Illicium anisatum)
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Attention is drawn to the development of a new and green alternative technique for the extraction of essential oils from spices. Solvent-free microwave extraction (SFME) is a combination of dry distillation and microwave heating without added any solvent or water. SFME and hydrodistillation (HD) were compared for the extraction of essential oil from three spices: ajowan (Carum ajowan, Apiaceae), cumin (Cuminum cyminum, Umbelliferae), star anise (Illicium anisatum, Illiciaceae). Better results have been obtained with the proposed method in terms of rapidity (1 h vs. 8 h), efficiency and no solvent used. Furthermore, the SFME procedure yielded essential oils that could be analysed directly without any preliminary clean-tip or solvent exchange steps. Copyright (C) 2004 John Wiley Sons, Ltd.
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