Solvent-Free Microwave Extraction: An Innovative Tool for Rapid Extraction of Essential Oil from Aromatic Herbs and Spices
Source abstract
Abstract
A relatively simple apparatus is described for extracting essential oils from aromatic plant material by atmospheric solvent-free microwave extraction (SFME) without the addition of any solvent or water. Isolation and concentration of volatile compounds were performed by a single stage. The product solutions of volatile compounds were directly analyzed by gas chromatography coupled to mass spectrometry (GC-MS). The essential oils fiom aromatic herbs (basil, crispate mint, thyme) and spices (ajowan, cumin, star anise) extracted by SFME for 30 minutes and I hour, were similar to those obtained by conventional hydro-distillation (HD)for (respectively) 4 and 8 hours. Substantially higher amounts of oxygenated compounds and lower amounts of monoterpenes hydrocarbons are present in the essential oils of the aromatic plants extracted by SFME in comparison with HD. Solvent-free microwave extraction is clearly advantageous to conventional distillation in terms of rapidity, efficiency, cleanliness, substantial saving of energy, and is environmentally friendly.
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Research context
OpenAlex topics: Analytical Chemistry and Chromatography · Ionic liquids properties and applications · Chemical and Physical Properties in Aqueous Solutions
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (4)
Show source-provided references
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