| 摘要 |
The present invention concerns a process for treating a wort in a kettle, said method comprising the steps of:
(a) providing:
€¢ a kettle (1) provided with an inlet (1 u) suitable for feeding a wort into the kettle and with an outlet (1 d) suitable for flowing the wort out of the kettle,
€¢ heating means (2) suitable for bringing the wort contained in the kettle close to or at boiling temperature, as well as for controlling said temperature,
€¢ a gas sparging system suitable for sparging an inert gas into said wort, ,
(b) feeding wort from a lautering step into said boiling kettle through the inlet, said wort being at a temperature below its boiling temperature;
(c) while sparging an inert gas through the wort, heating said wort to, and maintaining it at a treatment temperature, T a , which is below the boiling temperature, T b , of the wort for a duration, ttreat, comprised between 15 and 90 min, and no longer than required to evaporate at most 4 wt.% of water initially present in the wort;
(d) transferring the treated wort to a trub separation step through the outlet. |
