Open AccessFree amino nitrogen in sweet wort made from barley varieties tested in the Czech Republic
Author(s) -
Vratislav Psota
Publication year - 2019
Publication title -
kvasný průmysl/kvasný průmysl
Language(s) - English
Resource type - Journals
eISSN - 2570-8619
pISSN - 0023-5830
DOI - 10.18832/kp2019.65.142
Subject(s) - nitrogen , horticulture , mathematics , czech , chemistry , zoology , biology , botany , linguistics , organic chemistry , philosophy
The effect of the variety on the free amino nitrogen (FAN) content in wort was studied in the set of 24 varieties grown at four different testing sites for a three-year period. FAN was determined by the EBC 4.10 method. The highest average FAN was exhibited by the variety KWS Amadora (193 mg/l). The content of FAN was mostly affected by the year (24%), followed by the site, (15%); the effect of the variety was the lowest (13%). Nearly 50% of the samples exhibited low FAN, slightly over 40% of the samples had medium FAN and 12% of the samples exhibited high FAN.