How to determine the average a-acid content of a hop variety
This contribution aims to describe the difficulties in obtaining data to determine the average a-acid content of a hop variety and shows ways of taking account of the most important variables in a systematic investigation that covers all stages from the point of harvesting on up to hop processing. The most significant elements are the decomposition rates during hop storage, the type of hop products and the various methods of analysis.
At the latest immediately after hop harvesting, hop samples are tested for a-acids at an early stage in order to obtain information on average a-acid content of a hop variety in the particular year of harvesting. The hop sector also makes use of averages over a number of years in order to provide a basis for contracts covering future supplies.e. ...
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