Kvasný průmysl (Mar 2012)
The evaluation of α- and β-acid contents of Czech and Moravian hops from the 2011 harvest.
Abstract
The contents of α- and β- acids from hops harvested in the Czech Republic in 2011 have been evaluated. The sampling was done in all three growing areas - Žatec (75.9 % of the hop yard areas in the Czech Republic), Úštěk (13.3 %) and Tršice (12.6 %). The Saaz variety (ŽPČ) was cultivated on 87,4 % of the harvest areas, the Sladek variety on 5.4 %, Premiant variety on 5.5 % and the Agnus variety on 1.1 % of the harvest areas. The hops were analyzed in accordance with the Analytica-EBC, method 7.7 (HPLC) and all results are given in weight % in dry matter. The average value for α-acids in the Saaz variety in the Czech Republic was 4.2 % (in the Žatec area 4.26 %, in the Úštěk area 4.06 % and in the Tršice area 4.06 %). The content of β-acids was 5.13 %. The content of α-acids was 1.21 % higher when compared to the year 2010 and 0.55 % higher when compared to the average of the last 18 years. The content of β-acids was 0.33 % higher when compared to the long-term average and identical to the year 2010. The average content of α-acids in the Sladek variety in the Czech Republic was 8.2 % and the content of β-acids was 5.8 %. The content of α-acids was 0.9 % higher when compared to the harvest in 2010 and 1.3 % higher when compared to the average of the last 8 years. The content of α-acids in the Premiant variety was 10.1% and the content of β-acids was 5.2 %. The content of α-acids was 0.4 % higher when compared to the harvest in 2010 and to the average of the last 8 years. The average content of α-acids in the Agnus variety was 11.0 % and the content of β-acids was 6.1 %. The content of α-acids was comparable to the harvest in 2010.The contents of α- and β- acids from hops harvested in the Czech Republic in 2011 have been evaluated. The sampling was done in all three growing areas - Žatec (75.9 % of the hop yard areas in the Czech Republic), Úštěk (13.3 %) and Tršice (12.6 %). The Saaz variety (ŽPČ) was cultivated on 87,4 % of the harvest areas, the Sladek variety on 5.4 %, Premiant variety on 5.5 % and the Agnus variety on 1.1 % of the harvest areas. The hops were analyzed in accordance with the Analytica-EBC, method 7.7 (HPLC) and all results are given in weight % in dry matter. The average value for α-acids in the Saaz variety in the Czech Republic was 4.2 % (in the Žatec area 4.26 %, in the Úštěk area 4.06 % and in the Tršice area 4.06 %). The content of β-acids was 5.13 %. The content of α-acids was 1.21 % higher when compared to the year 2010 and 0.55 % higher when compared to the average of the last 18 years. The content of β-acids was 0.33 % higher when compared to the long-term average and identical to the year 2010. The average content of α-acids in the Sladek variety in the Czech Republic was 8.2 % and the content of β-acids was 5.8 %. The content of α-acids was 0.9 % higher when compared to the harvest in 2010 and 1.3 % higher when compared to the average of the last 8 years. The content of α-acids in the Premiant variety was 10.1% and the content of β-acids was 5.2 %. The content of α-acids was 0.4 % higher when compared to the harvest in 2010 and to the average of the last 8 years. The average content of α-acids in the Agnus v
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