Microbiological, physicochemical and biotechnological properties of dairy raw materials under intensive technologies

Ural State University of Economics, Ekaterinburg, Russian Federation

^* Corresponding author: chechenihina_os@usue.ru

Abstract

The purpose of the article is to analyze the microbiological, physico-chemical and biotechnological properties of raw milk obtained under intensive technologies using the Lely Astronaut A4 robotic milking system in comparison with milking operations using milking pipeline machines DA-2M Maiga, subjected to baromembrane sterilization through ceramic microfiltration membranes. It has been established that the use of intensive robotic technologies – the LelyAstronautA4 robotic milking system – can increase milk yield by an average of 12% compared to milking in a milk line using ceramic microfiltration elements (CMFE); reduce bacterial contamination of milk to a content of less than 500 thousand bacteria per 1 ml and decrease titratable acidity by 0.17°T. Research has shown that the optimal process for sterilizing raw milk is microfiltration. Microfiltrational sterilization through CMFE membranes removes 99.9% of bacteria and spores from milk. To normalize the fat content of milk after baromembrane sterilization, the required amount of cream, sterilized by the classical heat method, is added.