EN
The aim of this study was the verification of completeness of pasteurisation by measuring the alkaline phosphatase activity in goat milk products. Enzyme activity was determined by the use of a fluorimetric method. In total, 75 samples of pasteurised milk, two samples of raw milk, and 17 samples of cheese were examined. Fifty-six percent of pasteurised milk samples had an alkaline phosphatase activity at a level below 50 mU‧L⁻¹, 31% - from 50 to 100 mU‧L⁻¹, and 13% above 100 mU‧L⁻¹. Raw milk had an activity that equalled about 21,500 mU‧L⁻¹. Alkaline phosphatase activity of 82% of the cheese samples was below 2 and 18% - above 2 mU‧L⁻¹. The activity of alkaline phosphatase of all tested samples was below the tentative limits of 350 mU‧L⁻¹ for goat milk and 10 mU‧L⁻¹ for cheese, thus the limits had been supported.