Commission Regulation (EC) No 92/2005 (repealed)Show full title

1. Alkaline hydrolysis means treatment of animal by-products under the following conditions:

(a)

Either a sodium hydroxide (NaOH) or potassium hydroxide (KOH) solution (or a combination thereof) is used in an amount that assures approximate molar equivalency to the weight, type and composition of the animal by-products to be digested.

In the case of high fat in the animal by-products that neutralises the base, the added base is adjusted to the current fat content of the material.

(b)

The animal by-products and alkali mixture are heated to a core temperature of at least 150 °C and at a pressure (absolute) of at least 4 bars for at least:

(i)

three hours without interruption;

(ii)

six hours without interruption in case of treatment of animal by-products referred to in Article 4(1)(a)(i) and (ii) of Regulation (EC) No 1774/2002. However, material derived from animals referred to in Article 4(1)(a)(ii) may be processed in accordance with point 1(b)(i) provided that:

• the animals were below 24 months of age at the time they were killed, or

• the animals were subjected to laboratory testing for the presence of a TSE pursuant to Regulation (EC) No 999/2001 and the result of the testing was negative, or

(iii)

one hour without interruption in case of animal by-products consisting exclusively of fish or of poultry materials.

(c)

The process is carried out in a batch and the material in the vessel is constantly mixed; and

(d)

The animal by-products are treated in such a manner that the time-temperature-pressure requirements are achieved at the same time.