Kvasny Prum. 1999; 45(2): 41-45 | DOI: 10.18832/kp1999004

Monitoring of ageing process of new hybrid varieties Bor, Sládek and Premiant.Peer-reviewed article

K. KROFTA, J. ZAGOROVÁ, J. KOŘEN, J. TICHÁ, J. URBAN

The contribution deals with ageing of new hybrid varieties of Czech origin (Bor, Sládek, Premiant), which are within the framework of variety transformation introduces into agricultural practice. In testing was even Saaz semi-early red bine hop included as a reference variety. The ageing process was being monitored in time horizont 7 months from the crop 1997 up to March 1998. On the basis of decrease of alpha-bitter acid content, hard resin content and hop storage index (HSI) has been found that all hybrid varieties in comparison with Saaz semi-early red bine hop better storage characteristics. Varieties Bor and Premiant have been evaluated as the best. Within the framework of experiments was further done a comparison of lose storage of hops (in ballots) and hops placed in air conditioning storage, holding at constant temperature 4±1 °C. Qualitative differences between conditioning and loose hops ballots were not notice ably marked.The contribution deals with ageing of new hybrid varieties of Czech origin (Bor, Sládek, Premiant), which are within the framework of variety transformation introduces into agricultural practice. In testing was even Saaz semi-early red bine hop included as a reference variety. The ageing process was being monitored in time horizont 7 months from the crop 1997 up to March 1998. On the basis of decrease of alpha-bitter acid content, hard resin content and hop storage index (HSI) has been found that all hybrid varieties in comparison with Saaz semi-early red bine hop better storage characteristics. Varieties Bor and Premiant have been evaluated as the best. Within the framework of experiments was further done a comparison of lose storage of hops (in ballots) and hops placed in air conditioning storage, holding at constant temperature 4±1 °C. Qualitative differences between conditioning and loose hops ballots were not notice ably marked.

Keywords: ageing of hops, hop storage index, hops oils, alpha-bitter acids

Published: February 1, 1999