Analysis and prognosis of bitter acids content in Czech hop varieties - year 2018 and long-term comparisons and trends

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60193697%3A_____%2F19%3AN0000009" target="_blank" >RIV/60193697:_____/19:N0000009 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.kvasnyprumysl.cz/artkey/kpr-201901-0005_analysis_and_prognosis_of_bitter_acids_content_in_czech_hop_varieties_-_year_2018_and_long-term_comparisons_and.php" target="_blank" >https://www.kvasnyprumysl.cz/artkey/kpr-201901-0005_analysis_and_prognosis_of_bitter_acids_content_in_czech_hop_varieties_-_year_2018_and_long-term_comparisons_and.php</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.18832/kp2019.65.23" target="_blank" >10.18832/kp2019.65.23</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Analysis and prognosis of bitter acids content in Czech hop varieties - year 2018 and long-term comparisons and trends

Popis výsledku v původním jazyce

This article presents the results of the harvest forecast of the alpha-and beta-bitter acids of the Czech hop varieties in the 2018 harvest, the results are discussed in relation to the long-term averages, the composition of the bitter acid analogs and the stability of the varietal characteristics. 180 hop samples were analyzed using EBC 7.7 (HPLC) method. The alpha-acid content of the most important Saaz variety (2.9% in dry matter) was identical to the 2017 harvest and 18% rel. lower than the 26-year average. The alpha-acid content of Sladek (5.0%), Premiant (4.8%), and Saaz Late (1.6%) varieties was significantly lower than the long-term average. The harvest of the hops of the Kazbek and Agnus varieties was close to the long-term average. The ratio of alpha-and beta-acids, the relative content of cohumulone and the relative content of colupulone were consistent with long-term averages for the tested varieties. It was confirmed, that the harvest forecast gives timely information on the alpha-acids content of the harvest, the results were in good agreement with the values of the final evaluation of all harvested hops samples.

Název v anglickém jazyce

Analysis and prognosis of bitter acids content in Czech hop varieties - year 2018 and long-term comparisons and trends

Popis výsledku anglicky

This article presents the results of the harvest forecast of the alpha-and beta-bitter acids of the Czech hop varieties in the 2018 harvest, the results are discussed in relation to the long-term averages, the composition of the bitter acid analogs and the stability of the varietal characteristics. 180 hop samples were analyzed using EBC 7.7 (HPLC) method. The alpha-acid content of the most important Saaz variety (2.9% in dry matter) was identical to the 2017 harvest and 18% rel. lower than the 26-year average. The alpha-acid content of Sladek (5.0%), Premiant (4.8%), and Saaz Late (1.6%) varieties was significantly lower than the long-term average. The harvest of the hops of the Kazbek and Agnus varieties was close to the long-term average. The ratio of alpha-and beta-acids, the relative content of cohumulone and the relative content of colupulone were consistent with long-term averages for the tested varieties. It was confirmed, that the harvest forecast gives timely information on the alpha-acids content of the harvest, the results were in good agreement with the values of the final evaluation of all harvested hops samples.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

40401 - Agricultural biotechnology and food biotechnology

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

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

2570-8619

Svazek periodika

65

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

9

Strana od-do

23-31

Kód UT WoS článku

000458863900005

EID výsledku v databázi Scopus

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