Regional producers butter microbiological safety analysis

The purpose of the study is to assess the safety of butter sold in the retail network of the city of Krasnoyarsk. As objects of study, five samples of sweet creamy unsalted peasant butter from local manufacturers were selected and depersonalized. The results of determinations and comparisons of the actual values of microbiological safety indicators with the requirements of TR CU 033/2013 showed that in all the considered products there are no pathogenic microorganisms - L. monocytogenes and bacteria of the genus Salmonella. However, in some samples of butter, the content of sanitary-indicative microorganisms was exceeded. So, in three out of five samples, the total bacterial contamination was significantly exceeded (2.0 ∙ 106 CFU/cm3 in one sample and more than 3.0 ∙ 106 CFU/cm3 in two samples at a rate of not more than 1.0 ∙ 105 CFU/cm3). The presence of E. coli bacteria in the products was revealed: in three out of five samples, these microorganisms were found in 0.001 cm3, which, nevertheless, does not exceed the norm of the technical regulation (absence in 0.01 cm3). Yeasts and molds were found in all samples of butter, but in two out of five samples the sums of these microorganisms amounted to 1.3 ∙ 102 CFU/cm3 and 4.4 ∙ 102 CFU/cm3, which significantly exceeds the norm (no more than 100 CFU/cm3 in total). A microbiological study of product safety made it possible to make an assumption about a possible violation of the sanitary regime for the production of these samples and about the impact of the packaging method on the growth and development of microorganisms. The results obtained indicate the need to control the microbiological parameters of butter both at the stage of sale and at the stage of production.