Comparison of quality parameters of Czech and foreign hop varieties

Plant, Soil and Environment

Krofta K.:¹ 

关键词: hop varieties;    hop resins;    hop oils;    a-bitter acids;    b-bitter acids;   

DOI  :  

学科分类：农业科学（综合）

来源: Czech Academy of Agricultural Sciences

【 摘 要 】

Market varieties of hops are classified to several groups according to their use in the brewing industry – aroma, bitter (dual-purpose), high-alpha ones. Saaz and other genetically related varieties form a separate group among the aromatic hops. The group called fine aroma hops has a low content of a-bitter acids (3–4% w/w), its content of b-bitter acids is in the range of 4–7% w/w and cohumulone ratio in the interval of 23–26% rel. The composition of hop oils is characterised by the content of b-farnesene in the range of 15–20% rel. and trans-a-bergamotene at the amount of ca. 1% rel. Most market varieties of hops are of hybrid origin. It holds true about the Czech varieties Sládek, Bor, Premiant and Agnus. The content of a-bitter acids in bitter varieties is in the range of 7–10% w/w while the content of a-bitter acids in high-alpha hops is higher than 10% w/w.

【 授权许可】

Unknown