Essential Oils from Humulus Lupulus scCO₂ Extract by Hydrodistillation and Microwave-Assisted Hydrodistillation

Two different extraction methods were used for a comparative study of essential oils obtained from the scCO₂ (sc-supercritical) extract: microwave-assisted hydrodistillation (MAHD) and conventional hydrodistillation (HD). As a result, the best conditions for the maximum essential oil production were...

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Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2018-11, Vol.23 (11), p.2866
Main Authors: Tyśkiewicz, Katarzyna, Gieysztor, Roman, Konkol, Marcin, Szałas, Jan, Rój, Edward
Format: Article
Language:English
Subjects:
Carbon dioxide
Chromatography
Comparative studies
Efficiency
essential oil
Essential oils
extraction techniques
Gas chromatography
hops extracts
Humulene
hydrodistillation
Marynka strain
Mass spectrometry
Mass spectroscopy
Metabolites
Methods
microwave-assisted hydrodistillation
Oils & fats
Power
Supercritical fluids
Volatile compounds
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Summary:Two different extraction methods were used for a comparative study of essential oils obtained from the scCO₂ (sc-supercritical) extract: microwave-assisted hydrodistillation (MAHD) and conventional hydrodistillation (HD). As a result, the best conditions for the maximum essential oil production were determined for the MAHD method at 335 W microwave power for 30 min at water to raw material ratio of 8:3. The obtained essential oils were enriched in β-myrcene in the amount of 74.13%⁻89.32% (wt%). Moreover, the first application for determination of the above-mentioned volatile compounds by supercritical fluid chromatography (SFC) with photo-diode array detection (PDA) is presented, which in comparison with gas chromatography coupled with mass spectrometry (GC-MS/MS) resulted in similar values for β-myrcene and α-humulene in obtained samples within less than 1 min.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules23112866