The Yeast Thermolyzer deactivates live yeast through thermal treatment . For this, the yeast is heated to a defined deactivation temperature , then held at that temperature in a holding zone for the specified time, and afterwards the process can be safely continued. Depending on the model, hot water or steam is used as the heating medium.
 
 Typically, 10 seconds at 75 °C is sufficient to deactivate yeast. This destroys the living cell membranes .
 
 
 Application
 
 The Yeast Thermolyzer deactivates yeast through pasteurization . Waste or excess yeast can be utilized after thermolysis and is a valuable product due to its vitamin B and protein content.
 
 
 How the system works
 
 1) Heating
 
 
 
 The yeast flows through a special heat exchanger and is brought to deactivation temperature .
 
 
 2) Stopping zone
 
 
 
 In the holding zone, the yeast is kept at a specific temperature for the set time to ensure deactivation .
 
 
 3) Optional: two-stage system with heat recovery
 
 For efficient energy use, the system can be designed as a two-stage system with a regeneration zone :
 
 
 
 Step 1 (Regeneration): Live yeast is preheated in a counter-current flow to the already deactivated, hot yeast. The heat from the deactivated yeast is fed back into the process.
 
 
 Step 2 (heating zone): The yeast is then heated to the desired deactivation temperature via the heating medium.
 
 
 
 What this means for the company
 
 
 
 Constant deactivation with highly precise process control
 
 
 Heat recovery for efficient energy use and low operating costs
 
 
 Customized modular design with standard PLC
 
 
 Frame-mounted for easy installation and commissioning
 
 
 Hygienic design and full CIP capability
 
 
 
 Technical data
 
 Capacity: 5 – 100 hl/h
 
 Deactivation temperature / holding time: dependent on product / application
 
 Material: as required (1.4301 / AISI 304, 1.4404 / AISI 316L, …)
 
 Heating medium: hot water, steam (primary source)
 
 Cooling medium: glycol, ice water, ammonia, brine
 
 Options: different levels of automation; remote maintenance access; heat recovery section; booster pump; cooling
 
 
 contact
 
 For design, media concept (heating/cooling) and integration into your line, please use the contact form below.
 
 
 Modular design & extensions
 
 Yeast Recycler – Recovering beer from yeast
 
 Yeast Propagator – yeast propagation
 
 Yeast Pitch – Fully Automatic Yeast Dosage
 
 Word Aerator – wort aeration
 
 Word Cooler – Seasoning Cooling
 
 CIP – Cleaning in Place
 
 Sensors & Measurement Technology