Method for determining the presence of Žatec half-naked redhead hops in an unknown sample of head hops, pressed hops, hop pellets or beer

摘要

Method of determining the presence of Žatec half-naked redhead hops in an unknown sample of head hops, pressed hops, hop pellets or beer, in which the content of an analyte of the general formula C27H30O15 with an aglycone formed by kaempferol leaving the chromatographic column with a retention time of 9.8 minutes and an analyte of the general formula is determined by high-performance liquid chromatography with mass detection of an unknown sample of hops, pressed hops, hop pellets or beer C30H32O18 with campferol aglycone leaving the chromatographic column with a retention time of 10,0 minutes and, where appropriate, other analytes, and their weight ratios to determine whether the sample contains Žatec half-naked red-head hops or hops of another variety.