Evaluation of bitter acids and polyphenols content in Czech hops harvest in 2013 ? Part II: The content of polyphenols

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60193697%3A_____%2F14%3A%230000956" target="_blank" >RIV/60193697:_____/14:#0000956 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.kvasnyprumysl.cz/cz/journal/2014/7-8/" target="_blank" >http://www.kvasnyprumysl.cz/cz/journal/2014/7-8/</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Evaluation of bitter acids and polyphenols content in Czech hops harvest in 2013 ? Part II: The content of polyphenols

Popis výsledku v původním jazyce

The contents of polyphenolic compounds and the antioxidative properties of the important Czech hop varieties Saaz, Sladek, Premiant and Agnus were evaluated in selected samples (24, 12, 12 and 4). The hops were extracted with a water/acetone solution, and then analyzed. The results were compared with those from hops harvested in 2011 and 2012. The content of total polyphenols (TP), which are important in terms of the Protected Geographical Indication (PGI) as well as the contents of anthocyanogens and flavonoids are dependent on the variety. The highest content was found in the Saaz variety and the lowest in the Sladek variety.The only significant difference resulted between the Saaz variety and the other varieties. The antiradical activity of the hopsvarieties Saaz, Premiant and Agnus harvested 2013 was about 15 % rel. lower than in 2012. The antiradical activity of the Sladek variety was even 25% rel. lower. The highest content of the dominantly present prenylflavonoid xanthohumol (

Název v anglickém jazyce

Evaluation of bitter acids and polyphenols content in Czech hops harvest in 2013 ? Part II: The content of polyphenols

Popis výsledku anglicky

The contents of polyphenolic compounds and the antioxidative properties of the important Czech hop varieties Saaz, Sladek, Premiant and Agnus were evaluated in selected samples (24, 12, 12 and 4). The hops were extracted with a water/acetone solution, and then analyzed. The results were compared with those from hops harvested in 2011 and 2012. The content of total polyphenols (TP), which are important in terms of the Protected Geographical Indication (PGI) as well as the contents of anthocyanogens and flavonoids are dependent on the variety. The highest content was found in the Saaz variety and the lowest in the Sladek variety.The only significant difference resulted between the Saaz variety and the other varieties. The antiradical activity of the hopsvarieties Saaz, Premiant and Agnus harvested 2013 was about 15 % rel. lower than in 2012. The antiradical activity of the Sladek variety was even 25% rel. lower. The highest content of the dominantly present prenylflavonoid xanthohumol (

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

GM - Potravinářství

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Kvasný průmysl

ISSN

0023-5830

e-ISSN

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Svazek periodika

60

Číslo periodika v rámci svazku

7-8

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

7

Strana od-do

191-197

Kód UT WoS článku

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EID výsledku v databázi Scopus

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