| Title: | Hop (Humulus lupulus L.) essential oils and xanthohumol derived from extraction process using solvents of different polarity |
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| Authors: | ID Bizaj, Katja (Author)
ID Škerget, Mojca (Author)
ID Košir, Iztok Jože (Author)
ID Knez, Željko (Author) |
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| Files: |  Hop_(Humulus_lupulus_L.)_Essential-Bizaj-2022.pdf (2,30 MB)
MD5: 6E0BD5385B0316137931CB5E1C9A1146
 https://www.mdpi.com/2311-7524/8/5/368
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| Language: | English |
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| Work type: | Scientific work |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FKKT - Faculty of Chemistry and Chemical Engineering
MF - Faculty of Medicine
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| Abstract: | This study evaluates the content of essential oils (EOs) and prenylated flavonoid Xanthohumol (XN) in extracts of Slovenian hops, cultivar Aurora, obtained by using fluids of different polarity. It is a continuation of our previous work, investigating the extraction of bitter acids from hops. Extraction was conducted semi-continuously, using sub- and supercritical fluids of different polarity, i.e., carbon dioxide (CO2) and propane as non-polar and dimethyl ether (DME) as the polar solvent. The experiments explored a temperature range between 20 °C and 80 °C and pressures ranging from 50 bar to 150 bar. The content of XN in extracts was analysed using high-performance liquid chromatography and experiments demonstrated the largest concentration of XN was obtained using DME. In order to analyse the EO components in extracts, connected with a distinct odour, the steam distillation of extracts was performed and GC analysis was employed. Hop oil derived from CO2 extracts at specific conditions, had the highest relative concentration of linalool, β-caryophyllene and α-humulene, and oil derived from propane extracts had the highest content of all other five selected components (myrcene, geraniol, farnesene, α-selinene and δ-cadinene). The relative content of the investigated EO components in DME extracts was similar to that in propane extracts. |
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| Keywords: | hop extract, hop essential oils, flavonoids, carbon dioxide, propane, dimethyl ether |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 01.01.2022 |
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| Year of publishing: | 2022 |
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| Number of pages: | 12 str. |
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| Numbering: | Vol. 8, št. 5 |
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| PID: | 20.500.12556/DKUM-85062  |
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| UDC: | 633.791 |
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| ISSN on article: | 2311-7524 |
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| COBISS.SI-ID: | 105861379 |
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| DOI: | 10.3390/horticulturae8050368 |
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| Publication date in DKUM: | 17.08.2023 |
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| Views: | 364 |
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| Downloads: | 71 |
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| Metadata: |    |
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| Categories: | Misc.
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