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Acta Periodica Technologica
Article . 2005 . Peer-reviewed
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Acta Periodica Technologica
Article
License: CC BY NC ND
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Acta Periodica Technologica
Article . 2005
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Supercritical carbon dioxide hop extraction

Authors: Pfaf-Šovljanski Ivana I.; Grujić Olgica S.; Peruničić Mihailo B.; Cvetković Ivana M.; Zeković Zoran P.;

Supercritical carbon dioxide hop extraction

Abstract

The hop of Magnum cultivar was extracted using supercritical carbon dioxide (SFE-as extractant). Extraction was carried out in the two steps: the first one being carried out at 150 bar and 40?C for 2.5 h (Extract A), and the second was the extraction of the same hop sample at 300 bar and 40?C for 2.5 h (Extract B). Extraction kinetics of the system hop-SFE-CO2 was investigated. Two of four most common compounds of hop aroma (?-humulene and ?-caryophyllene) were detected in Extract A. Isomerised ?-acids and ?-acids were detected too. a-Acid content in Extract B was high (that means it is a bitter variety of hop). Mathematical modeling using empirical model characteristic time model and simple single sphere model has been performed on Magnum cultivar extraction experimental results. Characteristic time model equations, best fitted experimental results. Empirical model equation, fitted results well, while simple single sphere model equation poorly approximated the results.

Keywords

hop, mathematical modeling, T1-995, supercritical extraction, Technology (General)

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    popularity
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    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
4
Average
Average
Average
Published in a Diamond OA journal