摘要
Biocorrosion processes at metal surfaces are associated with microorganisms, or the products of their metabolic activities including enzymes, exopolymers, organic and inorganic acids, as well as volatile compounds such as ammonia or hydrogen sulfde. It was proved that strain Lactobacillus delbrueckii B5 constituted biofilms in the presence of different amounts of carbohydrates （5% sucrose and a mixture of 5% lactose, 5% fructose and 5% maltose）. The obtained information was used in a study treating the anticorrosive properties of microbial biofilms synthesized by the latter strain. The study of the corrosive stability of steel samples was conducted on the gravimetrique method. The rate of corrosion, calculated. The structure of layer over steel plates was analyzed by the degree of protection, and coefficient of protection has been Scanning Electron Microscopy （SEM） JSM 5510.
