Evaluation of disinfectant “Enzidez” according to physical and chemical parameters
The dependence of the national economy on disinfectants is constantly growing through prevention strategies and the development of resistance in microorganisms. Therefore, new disinfectants with different mechanisms of biocidal activity for a wide range of pathogens are appearing on the market. The aim of work has been to determine the physical and chemical parameters of the created disinfectant “Enzidez” active on biofilm forms of bacteria and the possible organic load. The magnitude of the surface tension of disinfectant “Enzidez” at different concentrations of solutions has been determined using a device with a Traube stalagmometer. The wettability of solutions has been determined by the method of measuring the wetting angle with a catheter. Washing properties and stability of foam by the method of washing animal fats, followed by application of indicator liquid. Proteolytic activity has been determined using milk and the effect of Enzidez solutions of different concentrations on it, followed by measurement of the optical density of the solutions spectrophotometrically at a wavelength of 600 nm. It is established that the disinfectant with enzymes – “Enzidez” for disinfection in veterinary clinics for pre-sterilization disinfection and treatment of products and instruments of surgical purpose (plastic, rubber, glass, stainless steel) and objects of veterinary supervision (tables, utensils, walls, floors, doors, windows, etc.) with organic load is well soluble in water and has a pH of 0.25–1.0 % solutions in the range of 8.2–8.0 units. At a solution temperature of +20 ± 1 °С it has had a surface tension not higher than 37.63 ± 0.50 mN/m and a wetting angle of 69.5 ± 0.7 degree. The disinfectant has provided an excellent detergent effect only at solutions with a concentration of 1.0 % and above. When assessing the corrosive action of Enzidez in the concentration of solutions from 0.25 to 1.0 %, the amount of corrosion on stainless steel has been hundreds of times lower than the allowable regulatory limit. The impact on galvanized steel is slightly higher than that of stainless steel, but also several tens below the norm. A study to determine the proteolytic activity of the disinfectant “Enzidez” on milk proteins has revealed that the disinfectant broke down proteins at a concentration of solutions 0.5–1.0 % at a temperature of + 20 °C at 41.3–43.1 %, respectively, for 15 min of exposure. However, increasing the temperature of solutions to +60 °C and exposure for 30 min has provided an increase in proteolytic activity up to 70 %. Thus, disinfectant “Enzidez” is a highly active disinfectant for disinfecting surfaces even in the case of organic contamination.
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