| 摘要 |
<p>Disclosed is a process for the isomerisation of hop alpha-acids to hop iso-alpha-acids comprising mixing a hop alpha-acid containing feed with at least one carbon containing chemical compound with one or more functional groups containing a nitrogen atom, with a lone electron pair, with a pKb value below 5, wherein the concentration of the alpha-acid compounds in the reaction mixture at the start of the isomerisation reaction is at least 1 weight% and whereby at the start of the isomerisation reaction the molar ratio of alpha-acid compounds to the nitrogen content of the carbon-containing chemical compound(s) with one or more functional groups containing a nitrogen atom with a pKb value below 5 is between 20:1 and 1:10.</p> |
