The content of hop prenylflavonoids in Czech and foreign beers

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F14864347%3A_____%2F10%3A%230000308" target="_blank" >RIV/14864347:_____/10:#0000308 - 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

The content of hop prenylflavonoids in Czech and foreign beers

Original language description

Content of isoxanthohumol (IX) in most of Czech and foreign beer brands did not exceed limit of 2000 mg.l-1. Concentration of xanthohumol (XN) was up to 100 mg.l-1. The most of prenylflavonoids out of all investigated beers were found in Czech dark 12 %lager - 2500 mg.l-1 IX a 500 mg.l-1 XN. In average less prenylflavonoids were found in draught and alcohol-free beer brands due to lower hopping rate and higher proportion of CO2-extracts. Level of IX in beer can be influenced by choice of hop veriety with higher XN/alpha acid ratio. The most of prenylflavonoids is inserted into brewing process if vatieties Sládek and Saaz are used for hopping. Total rate of xanthohumol utilisation during beer production in full-scale is approximately 20-30 %. Tracing of the stability of IX and XN contents in bottled beers which was done in the time period of 3 months showed, that concentration of isoxanthohumol is reduced by 10-15 % based on storage temperature.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CB - Analytical chemistry, separation

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2010

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Kvasný průmysl

ISSN

0023-5830

e-ISSN

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Volume of the periodical

56

Issue of the periodical within the volume

1

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

8

Pages from-to

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UT code for WoS article

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EID of the result in the Scopus database

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