Division 2 Processing method
United Kingdom
High pressure high temperature hydrolysis shall be carried out according to the following processing standards:
- (a)
The animal by-products must be heated to a core temperature of at least 180 °C for at least 40 minutes without interruption at a pressure (absolute) of at least 12 bar, heated by indirect steam application to the biolytic reactor;
- (b)
The process must be carried out in a batch and the material in the vessel must be constantly mixed; and
- (c)
The animal by-products must be treated in such a manner that the requirements regarding time, temperature and pressure are achieved at the same time.