In former times hops are used in an unprocessed form (whole hop cones). But there are
many problems associated with this kind of hops. Like for example:
• the handling even if it is pressed into bales there is only a bulk density of
100 – 150 kg/m3, which leads to high spaces in storage or for transport
• besides this lightness, it is very sticky, so that it is impossible to add it into the kettle automatically
• the heterogeneity due to the picking period and variety leads to variable bitterness in the final beer
• or the stability during storage which is endangered by microbiological action and
oxidation

Therefore the hop products were invented to reduce or even eliminate such negative
aspects. These products became available in the late 50’s, early 60’s (7). Nowadays the main intention is to reduce the costs in every business or company. In a brewery this aim can be reached effectively with the following factors:
• the progress of automation
• lowering the energy consumption
• and by a good utilization of the raw materials

Isomerized Hops