European Parliament 14 February 2002, WRITTEN QUESTION E-0360/02 by Alexandros Alavanos (GUE/NGL) to the Commission. Supply teachers and Directive 1999/70/EC.

namely a negative reaction to the phosphatase test and a positive reaction to the peroxidase test. Heat treatment which goes beyond the minimum conditions for pasteurisation may lead to the inactivation of the peroxidase enzyme, which results in a negative reaction to the test. The presence of peroxidase is thus an essential characteristic of ‘pasteurised milk’.