EFFECT OF SOME HEAT TREATMENTS ON THE PHYSICAL COMPOSITION OF RAW MILK

Abstract

The aim of this research is to study the effect of heat treatments for raw milk and study the chemical, physical and microbial content. This study was conducted for the period from 7/11/2021 to 30/1/ 2022 in the laboratories of the College of Agriculture/ Department of Food Sciences/ Tikrit University. The treatments included traditional pasteurization, solar pasteurization, electric pasteurization and microwave pasteurization, in order to find out which treatments have the least effect on the physical properties of raw milk. Among the most important findings of this study are:-As for the physical properties, the results showed a decrease in the density only in the electric pasteurization and it was not affected in the rest of the treatments. And the effect of electric pasteurization on increasing the electrical conductivity compared to the other treatments, where it was 4.53