Methods for verifying the authenticity of hops - an effective tool against falsification

Olšovská, Jana; Krofta, Karel; Jandovská, Vladimíra; Patzak, Josef; Štěrba, Karel

doi:10.18832/kp2016030

Cited by 7 publications

(3 citation statements)

References 114 publications

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“…The qualitative composition of hop essential oil is primarily determined by the hop variety itself, reflecting its genetic foundation (Olšovská et al, 2016). However, the quantitative content of essential oil can exhibit variations influenced by various agricultural practices, such as cultivation techniques, fertilizer applications, and prevailing weather conditions.…”

Section: Discussionmentioning

confidence: 99%

“…The quantity and composition of essential oils are influenced by various factors, including cultivation practices, fertilization methods, and weather conditions. However, the genetic characteristics of hop varieties play a predominant role in determining the quality and composition of HEO, making essential oil analysis valuable for hop variety identification and certification (Nesvadba et al, 2021;Olšovská et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Variability and stability of essential oil composition in Ukrainian hop varieties

Protsenko,

Janse,

Koshytska

et al. 2023

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The aim of the study was to evaluate the variation in essential oil content and composition within nine distinct Ukrainian hop varieties, with a particular focus on their genetic stability and suitability for brewing applications over 11 years of their cultivation. The hydrodistillation method (Analytica-EBC 7.10) was used to evaluate hop essential oil content and gas-liquid capillary chromatography (Analytica-EBC 7.12) to discern its qualitative composition. Variability was evaluated using statistical parameters. The essential oil content across the studied varieties spanned from 0.51 to 2.58 ml/100 g of dry hop cones. The highest content was measured in the bitter-aroma variety with a special aroma – Ruslan. The predominant essential oil components, including myrcene, caryophyllene, humulene, and farnesene, collectively constituted 70.0–84.2% of the total amount. The aroma varieties displayed myrcene content typical for European varieties (with the level up to 56.2% in the Ruslan variety). Farnesene content exhibited significant variation ranging from 0.3 to 17.6% with the highest content in Saaz-type varieties (Klon 18, Zlato Polissya, and National) and the bitter type Promin variety. Humulene content ranged from 13.2 to 32.6%. Among all studied varieties, Alta displayed the least variability for all parameters evaluated (Cv = 15.2%). This study underscores the genetic basis of essential oil composition in hops, emphasizing its potential as a biochemical criterion for identifying hop breeding varieties. The study revealed, that despite annual fluctuations, the essential oil content and composition remained within passport data declared for the variety. The findings provide valuable insight into a sustainable cultivation and optimal utilization of hops in the brewing industry.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Variability and stability of essential oil composition in Ukrainian hop varieties

Protsenko,

Janse,

Koshytska

et al. 2023

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“…The content and composition of HEOs have a genetic basis. Therefore, the origin of a hop variety can be determined on the basis of the content and composition of HEOs (Olšovská et al, 2016). For example, isobutyl isobutyrate, 2-methylbutyl isobutyrate and 3-methyl isobutyrate can be found in Saaz Late but not in Saaz.…”

Section: Introductionmentioning

confidence: 99%

Essential oils in Czech hop varieties

Nesvadba

Olšovská

Straková

et al. 2021

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Czech hop varieties were evaluated as part of maintenance breeding. The evaluation was performed in a single location between 2011 and 2020. The average weight of hop essential oils (HEOs) is 0.43 to 2.28% w/w. The Saaz, Saaz Brilliant, Mimosa, Saaz Shine and Saaz Comfort hop varieties have a low amount of HEOs. Their maximum content of these compounds amounts to 1.1% w/w. The average proportion of myrcene is between 23.42 and 45.14% rel. Only the Agnus, Vital and Boomerang hop varieties have the maximum myrcene proportion above 50% rel. The average share of caryophyllene ranges between 6.19 and 13.15% rel. Saaz Late has a broad range of caryophyllene percentage – from 5.39% rel. to 15.53% rel. The average percenatge of farnesene is between 0.14 and 16.91% rel. Only the Saaz Comfort and Saaz Shine hop varieties have the maximum farnesene share above 20% rel. The average humulene content has a very broad range between 2.23 and 35.79% rel. The Vital, Mimosa, Gaia and Saaz Comfort hop varieties are in a group with a low humulene percentage, which is clearly different from other hop varieties. The average share of selinenes ranges broadly from 0.97 to 33.56% rel. Mimosa differs from the before mentioned varieties with its proportion of selinenes between 23.08 and 43.75% rel. The aim was to characterize and compare Czech hop varieties in terms of content and composition of HEOs.

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Novel and efficient approach to identify hop cultivars (Humulus lupulus L.) using cultivar identification diagram strategy based on fingerprint of flavonol di- and tri-O-glycosides

Dušek

Jandovská

Mikyška

et al. 2020

Eur Food Res Technol

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Methods for verifying the authenticity of hops - an effective tool against falsification

Cited by 7 publications

References 114 publications

Variability and stability of essential oil composition in Ukrainian hop varieties

Variability and stability of essential oil composition in Ukrainian hop varieties

Essential oils in Czech hop varieties

Novel and efficient approach to identify hop cultivars (Humulus lupulus L.) using cultivar identification diagram strategy based on fingerprint of flavonol di- and tri-O-glycosides

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