DETERMINATION OF POLYPHENOLS IN WORTS AND BEER BY HPLC-UV

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F10%3A63509452" target="_blank" >RIV/70883521:28110/10:63509452 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
DETERMINATION OF POLYPHENOLS IN WORTS AND BEER BY HPLC-UV
Original language description
The aim of the present work is to characterize worts and beer polyphenols quantitatively and qualitatively in order to monitor the effects of technologies in the brewing process. In this work, samples were taken at various stages during the brewing process. The total polyphenol content was measured by applying the Folin-Ciocalteu method on the spectral colorimeter ?Spekol 11?. The analysis of individual polyphenols was carried out by using high pressure liquid chromatography (HPLC) with ultraviolet (UV)detector. When comparing the total polyphenol value measured by Folin-Ciocalteu method (ranging from 145 to 185 mg/L in the intermediates) with the total polyphenol value calculated as the sum of the individual polyphenols measured by HPLC-UV (ranging from 24.8 to 32.3 mg/L in the intermediates), the latter appeared to be inferior. The combination of these methods allows the determination of the concentration of each separated constituents, despite the absence of available standards.
Czech name
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Czech description
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Project
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Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Bezpečnosť a kontrola potravín (Zborník prác z medzinárodnej vedeckej konferencie)
ISBN
978-80-552-0350-8
ISSN
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e-ISSN
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Number of pages
5
Pages from-to
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Publisher name
Slovenská poľnohospodárská univerzita v Nitre
Place of publication
Nitra
Event location
Nitra
Event date
Jan 1, 2010
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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