An original method for quantifying the antibacterial properties of products with a complex surface and materials that firmly hold biocidal additives

Purpose of the method: allows you to quantify the antibacterial properties of materials and products with biocidal additives

Brief description: the essence of the method is to register the amount of lactic acid formed in the medium due to the vital activity of viable cells of lactic acid bacteria adsorbed on the surface of the material, which implement the only way of metabolism – lactic acid fermentation, accompanied by the accumulation of lactic acid. The method was named adsorption-titrimetric

Advantages in comparison with analogues: the method allows one to obtain quantitative parameters of the antibacterial properties of products, including those with a developed surface structure, as well as materials that relatively firmly hold biocidal additives and contain antimicrobial drugs that are limitedly soluble in aqueous media. In addition, the method is distinguished by the availability of the tools and equipment used, the absence of expensive analysis steps, low labor costs and efficiency.

The form of intellectual property protection: a measurement procedure was developed “Determination of the degree of stability of materials and products with biocidal additives to biofouling”, which was confirmed by the Belarusian State Institute of Metrology (certificate of attestation No. 543/2009).

Development stage: the adsorption-titrimetric method was introduced in the laboratory of surfactants of the Institute of Chemistry of New Materials of the National Academy of Sciences of Belarus. The measurement technique “Determination of the degree of stability of materials and products with biocidal additives to biofouling” has been implemented in the laboratory of thin films chemistry at the Institute of Physicochemical Problems of the Belarusian State University.