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Statements

Subject Item
n2:RIV%2F60193697%3A_____%2F08%3A%230000460%21RIV09-MSM-60193697
rdf:type
skos:Concept n16:Vysledek
dcterms:description
The study of the role of polyphenols in malt, hops and beers is very important and therefore new rapid extraction techniques are required. Modern Pressurized Fluid Extraction (PFE) technique coupled with HPLC and high sensitivity CoulArray detection was used for analysing of some of the polyphenols in malt and hops. The qualitative and quantitative dependence of extracted polyphenols on extraction temperature was found under optimized extraction conditions of PSE technique. Recoveries within the temperature interval 40–60 °C were constant with the exception of ferulic acid. Outside of this interval concentrations of some polyphenols depend on the temperature significantly. Obtained results were compared with results obtained by the currently used warm water extraction methods (e. g. congress mashing or water extraction under refrigeratory ). Studium významu polyfenolů ve sladu, chmelu a pivu je velmi důležité a jeho přepokladem je využívání nových extrakčních postupů. Pro stanovení některých polyfenolů sladu a chmele byla použita moderní tlaková fluidní extrakce kombinovaná s HPLC a vysoce citlovou CoulArray detekcí. Byla pozorována kvalitativní i kvantitativní závislost průběhu extrakce polyfenolů na teplotě extrakce v podmínkách optimalizované PSE techniky. S výjimkou kyseliny ferulové byla výtěžnost v rozmezí teplot 40–60 °C konstantní. Mimo tento interval se vátěžnost polyfenolů výrazně měnila. Získaná výsledky byly porovnány s výsledky získanými běžnou extrakcí horkou vodou. The study of the role of polyphenols in malt, hops and beers is very important and therefore new rapid extraction techniques are required. Modern Pressurized Fluid Extraction (PFE) technique coupled with HPLC and high sensitivity CoulArray detection was used for analysing of some of the polyphenols in malt and hops. The qualitative and quantitative dependence of extracted polyphenols on extraction temperature was found under optimized extraction conditions of PSE technique. Recoveries within the temperature interval 40–60 °C were constant with the exception of ferulic acid. Outside of this interval concentrations of some polyphenols depend on the temperature significantly. Obtained results were compared with results obtained by the currently used warm water extraction methods (e. g. congress mashing or water extraction under refrigeratory ).
dcterms:title
Pressurized Fluid Extraction with CoulArray detection – new alternative of polyphenol extraction and detection in malt and hops Tlaková fluidní extrakce s coularray detekcí - nová alternativa extrakce a stanovení polyfenolů sladu a chmele Pressurized Fluid Extraction with CoulArray detection – new alternative of polyphenol extraction and detection in malt and hops
skos:prefLabel
Pressurized Fluid Extraction with CoulArray detection – new alternative of polyphenol extraction and detection in malt and hops Pressurized Fluid Extraction with CoulArray detection – new alternative of polyphenol extraction and detection in malt and hops Tlaková fluidní extrakce s coularray detekcí - nová alternativa extrakce a stanovení polyfenolů sladu a chmele
skos:notation
RIV/60193697:_____/08:#0000460!RIV09-MSM-60193697
n3:aktivita
n19:Z
n3:aktivity
Z(MSM6019369701)
n3:dodaniDat
n7:2009
n3:domaciTvurceVysledku
n8:3633608 n8:4183932 n8:7033176 n8:9062394 n8:3715744
n3:druhVysledku
n11:D
n3:duvernostUdaju
n18:S
n3:entitaPredkladatele
n17:predkladatel
n3:idSjednocenehoVysledku
389107
n3:idVysledku
RIV/60193697:_____/08:#0000460
n3:jazykVysledku
n12:eng
n3:klicovaSlova
pressurized fluid extraction; CoulArray detection; polyphenols; malt; hop
n3:klicoveSlovo
n4:malt n4:hop n4:pressurized%20fluid%20extraction n4:CoulArray%20detection n4:polyphenols
n3:kontrolniKodProRIV
[0C50E8E7A5AF]
n3:mistoKonaniAkce
Praha
n3:mistoVydani
Praha
n3:nazevZdroje
Sborník přednášek a posterů 22. Pivovarsko-sladařské dny, Praha, 1.-2. listopad 2007
n3:obor
n13:CB
n3:pocetDomacichTvurcuVysledku
5
n3:pocetTvurcuVysledku
8
n3:rokUplatneniVysledku
n7:2008
n3:tvurceVysledku
Roth, M. Jurková, Marie Čejka, Pavel Karásek, P. Kellner, Vladimír Čulík, Jiří Horák, Tomáš Planeta, J.
n3:typAkce
n10:EUR
n3:zahajeniAkce
2007-11-01+01:00
n3:zamer
n20:MSM6019369701
s:numberOfPages
12
n14:hasPublisher
Výzkumný ústav pivovarský a sladařský, a. s.
n15:isbn
978-80-86576-29-9