Method 6 (processing of ABPs)

Method 6 for the processing of animal by-products (ABPs), as defined in EU regulations, is crucial for the management of Category 3 by-products originating from aquatic animals or aquatic invertebrates. This method ensures safe and effective treatment of ABPs, minimizes public and animal health risks and complies with strict EU regulations.

Method 6 technical details

1. Particle size reduction: Animal by-products must be reduced to a particle size not exceeding 50 or 30 mm, depending on the heat treatment applied. After reduction, the by-products must be mixed with formic acid to lower the pH to 4 or less and keep it there. The mixture must be stored for at least 24 hours before further treatment.

2. Heat treatment: The mixture must then be heated to:

   • a core temperature of at least 90 °C for at least 60 minutes; or

   • a core temperature of at least 70 °C for at least 60 minutes.

   • When using a continuous system, the flow of the product through the heat convector must be controlled by mechanical commands that limit its movement and ensure sufficient cycle time and temperature.

3. Batch or continuous systems: Processing can take place in batch or continuous systems, allowing operational flexibility.

4. Regulatory compliance: Compliance with these processing standards ensures that the treated ABPs are safe for subsequent use, for example in the production of energy, fertilizers or other technical applications.