HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHY ANALYSIS OF TETRAHYDRO-ISO-ALPHA-ACIDS IN BEER

Authors
CLARK JG BURROUGHS LJ GUZINSKI JA
Citation
Jg. Clark et al., HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHY ANALYSIS OF TETRAHYDRO-ISO-ALPHA-ACIDS IN BEER, Journal of the American Society of Brewing Chemists, 56(2), 1998, pp. 76-79
Citations number
5
Categorie Soggetti
Biothechnology & Applied Migrobiology","Food Science & Tenology
Journal title
Journal of the American Society of Brewing Chemists → ACNP
ISSN journal
03610470
Volume
56
Issue
2
Year of publication
1998
Pages
76 - 79
Database
ISI
SICI code
0361-0470(1998)56:2<76:HLAOT>2.0.ZU;2-V
Abstract
An improved method for the measurement of tetrahydro-iso-alpha-acids a nd iso-alpha-acids in beer is presented. The method is based upon the HPLC separation of hop acids on a C8 reverse-phase column using gradie nt elution with a citrate buffer at a pH of 7.0. The method is suitabl e for measurement of small additions of tetrahydro-iso-alpha-acids for foam improvement as well as for the determination of trace amounts of iso-alpha-acids in a beer designed to be light stable.