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| Description
| - The EBC method 7.7, currently used for determination of bitter acids in hop products, is a time-consuming and laborious extraction technique. In this contribution, our aim was to propose a new extraction method based on Pressurized Fluid Extraction (PFE). Compared to conventional extractions, PFE offers a number of important benefits. PFE on OnePSE automated extractor was used for extraction of alpha- and beta-acids from hops and hop products. The parameters influencing the extraction efficiency were studied as well as the influence of the sample preparation method. The quantitative determination of alpha- and beta-acids in extracts was accomplished using an HPLC equipped with diode array detector. The experimental results were compared with those obtained by the standard EBC method 7.7.
- The EBC method 7.7, currently used for determination of bitter acids in hop products, is a time-consuming and laborious extraction technique. In this contribution, our aim was to propose a new extraction method based on Pressurized Fluid Extraction (PFE). Compared to conventional extractions, PFE offers a number of important benefits. PFE on OnePSE automated extractor was used for extraction of alpha- and beta-acids from hops and hop products. The parameters influencing the extraction efficiency were studied as well as the influence of the sample preparation method. The quantitative determination of alpha- and beta-acids in extracts was accomplished using an HPLC equipped with diode array detector. The experimental results were compared with those obtained by the standard EBC method 7.7. (en)
- V současnosti užívaná metoda stanovení hořkých kyselin chmele a chmelových produktů EBC 7.7 je časově nároční a pracná extrakční technika. Cílem naší práce bylo navrhnout novou extrakční techniku založenou na tlakové fluidní extrakci (PFE). V porovnání s konvenčními extrakcemi nabízí PFE řadu významných výhod. PFE na automatickém extraktoru OnePSE byla použita pro extrakci alfa- i beta-kyselin chmele a chmelových produktů. Byly studovány parametry ovlivňující výtěžnost extrakce i vliv metody přípravy vzorků. Jako koncovka stanovení alfa- i beta-kyselin byla použita HPLC s detekcí DAD. Bylo provedeno porovnání výsledků s výsledky získanými metodou EBC 7.7. (cs)
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| Title
| - Pressurized Fluid Extraction – new metod of extraction of bitter acids from hops and hop products
- Tlaková fluidní extrakce - nová metoda extrakce hořkých kyselin z chmele a chmelových produktů (cs)
- Pressurized Fluid Extraction – new metod of extraction of bitter acids from hops and hop products (en)
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| skos:prefLabel
| - Pressurized Fluid Extraction – new metod of extraction of bitter acids from hops and hop products
- Tlaková fluidní extrakce - nová metoda extrakce hořkých kyselin z chmele a chmelových produktů (cs)
- Pressurized Fluid Extraction – new metod of extraction of bitter acids from hops and hop products (en)
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| skos:notation
| - RIV/60193697:_____/08:#0000459!RIV09-MSM-60193697
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/60193697:_____/08:#0000459
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - pressurized fluid extraction; bitter acids; hop (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...v/mistoKonaniAkce
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| http://linked.open...i/riv/mistoVydani
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| http://linked.open...i/riv/nazevZdroje
| - Sborník přednášek a posterů 22. Pivovarsko-sladařské dny, Praha, 1.-2. listopad 2007
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...UplatneniVysledku
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| http://linked.open...iv/tvurceVysledku
| - Horák, Tomáš
- Karásek, P.
- Kellner, Vladimír
- Čejka, Pavel
- Jurková, Marie
- Čulík, Jiří
- Roth, M.
- Planeta, J.
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| http://linked.open...vavai/riv/typAkce
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| http://linked.open.../riv/zahajeniAkce
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| http://linked.open...n/vavai/riv/zamer
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| number of pages
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| http://purl.org/ne...btex#hasPublisher
| - Výzkumný ústav pivovarský a sladařský, a. s.
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| https://schema.org/isbn
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