New process for the photochemical conversion of hop extracts and device for implementing this process

摘要

The present invention relates to a process for the photochemical conversion of hop extracts. The process is characterised in that the hop extracts, comprising the alpha and beta acids in solution in liquid or supercritical carbon dioxide, are subjected to a photochemical irradiation procedure under pressure in order to bring about the practically quantitative conversion of the alpha acids to iso- alpha acids. Application to beer manufacturing processes. <IMAGE>