The objective of the research study was to study the effect of some selected conditions and the effect of additives used in the production of meat batters on the activity of Staphylococcus carnosus ATCC51365 denitrifying bacteria, as well as to determine the potential possibility of applying the strain discussed to improve the effectiveness of meat curing process by nitrates (III). The study was conducted in a model system that was a TBS liquid protein medium. It was found that the strain of Staphylococcus carnosus ATCC-51365 denitrifying bacteria exhibited activity in a broad range of temperatures (15 – 40°C) and was capable of carrying out the reduction of nitrates (V) and (III). Sodium chloride and polyphosphates have an inhibiting effect on the growth and bacterial activities of the strain studied, and significantly impact the decrease in the reduction rate of nitrates (V) and (III). With the application of a sufficiently high number of bacterial cells (10⁷ cells /g), the activity rate of the Staphylococcus carnosus ATCC-51365 strain in reducing nitrates seems to be sufficient. The Staphylococcus carnosus ATCC – 51365 bacterial strain is characterized by biochemical properties that suggest the possibility of applying this strain in the process of curing meat using a nitrate (III). The practical application of the denitrifying bacteria to manufacture cured meat products requires further analyses, among other things, an analysis of the effect of bacteria on the colour stability and healthiness (in terms of residues of nitrates (V) and nitrites (III)) of the final product.