Determination of Bitter Compounds in Hops – Effect of Crop Year and Hops Age

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F14864347%3A_____%2F17%3AN0000005" target="_blank" >RIV/14864347:_____/17:N0000005 - isvavai.cz</a>
Alternative codes found
RIV/60193697:_____/17:N0000044
Result on the web
<a href="https://kvasnyprumysl.cz/artkey/kpr-201705-0002_stanoveni_horkych_latek_v_chmelu_-_vliv_rocniku_a_stari_chmele.php" target="_blank" >https://kvasnyprumysl.cz/artkey/kpr-201705-0002_stanoveni_horkych_latek_v_chmelu_-_vliv_rocniku_a_stari_chmele.php</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.18832/kp201725" target="_blank" >10.18832/kp201725</a>

Result language
angličtina
Original language name
Determination of Bitter Compounds in Hops – Effect of Crop Year and Hops Age
Original language description
Our study is focused on mutual comparison of four methods of determination of alpha acids in hops (EBC 7.4, EBC 7.5, ČSN and EBC 7.7) and their application in evaluation of hops stored under different conditions. Furthermore, the results of the comparison of predicted and actual alpha acid values in the long-term monitoring of harvesting of three Czech hop varieties are discussed. The largest differences were found between the EBC 7.5 (LCV) and EBC 7.7 (HPLC) methods; the fi rst method gives systematically higher results and the difference exponentially increases with the hop storage index (HIS) value. The difference in HSI in fresh hops is 10 – 15% rel. while the difference in older hops with HSI 0.6 – 0.7 is 25 – 45% rel. Pre-harvest prognosis and harvest estimate of alpha acids in the Saaz variety are in good agreement with the facts (kr = 0.93, kr = 0.95) and the same holds for the harvest estimation relation and the reality of the varieties Sládek and Premiant (kr = 0.93; 0.97).
Czech name
—
Czech description
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Project
<a href="/en/project/QJ1610202" target="_blank" >QJ1610202: The development of novel crops to produce of food products with higher nutritional value</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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