Brewing tests of new fine aroma hop varieties (Humulus lupulus L.) Saaz Brilliant, Saaz Comfort and Saaz Shine

Alexandr Mikyška,Martin Slabý,Jitka Charvátová,Vladimír Nesvadba,Karel Štěrba

doi:10.18832/kp2021.67.464

Abstract

Characterization of varietal profiles of hop secondary metabolites in beer is of considerable importance for hop growing and brewing. This three-year study focused on pilot brewing tests of three new Saaz derived hop varieties, namely Saaz Brilliant, Saaz Shine and Saaz Comfort. The sensory profiles of kettle and kettle+dry single hopped beers were monitored. At the same time, the impact of dry hopping technology on sensory perception of final beers and changes in volatile compounds was investigated. Pilot brews (200 l) of 12% pale lager were prepared in kettle and kettle+dry variants using the new Czech varieties and traditional Saaz as a control sample. Essential oils in beers were determined by GC/MS-MS method with the aim to clarify links to the beer sensory profile of both, kettle and dry hopping mode. The descriptive sensory method of hop-derived aromas and the triangle tests were employed to determine the sensory quality of beer. The overall sensory impression of beers from all tested varieties was at least comparable to traditional Saaz, and Saaz Comfort even reached better evaluation. The profile of essential oils and hop flavours in beer was partially different, however it was not rated worse than Saaz. The kettle+dry hopped beers of new varieties were significantly different from Saaz in the triangle test, Saaz Brilliant was preferred over the Saaz. The results showed considerable potential of new varieties for the production of interesting and taste-specific beers and the enrichment of the spectrum of fine aroma varieties of Czech hops.

Highlights

Hops are undoubtedly a brewing raw material, which significantly forms the sensory profile of beer and its popularity by consumers
The cultivars of the fine aroma hops of Saaz Brilliant, Comfort and Saaz Shine, registered in the Czech Republic in December 2019, proved to be of excellent quality in repeated pilot brewing tests of the single-variety kettle and kettle+dry hopped pale lager beers
The kettle hopped Saaz Briliant and Saaz Shine beers were fully comparable to the traditional Saaz from the point of sensory evaluation, and the Saaz Comfort beers were even better rated than Saaz

Summary

Introduction

Hops are undoubtedly a brewing raw material, which significantly forms the sensory profile of beer and its popularity by consumers. The profile of essential oils in the tested beers shows beer was lower for Saaz Brilliant and Saaz Comfort com- certain differences of the tested new varieties as well as pared to Saaz (246 mg/l). The impact of the concentration represented 34 chemical individuals and included mono- and ratio of essential oil components on the sensory terpene hydrocarbons (α-pinene, β-pinene, myrcene, li- character of beer is a complex issue that is still the submonene), sesquiterpene hydrocarbons (β-caryophyllene, ject to research (Mikyška et al 2018; Dresel et al, 2015; β-farnesene, α-humulene), monoterpene alcohols (linalo- Kishimoto et al, 2006).

Results

Conclusion