Influence of N-decyl-pyridinium Chloride on Biofilm Formation and Production of Exopolymeric Complex by Sulfate-reducing Bacteria on the Steel Surface

Issue 3(73) 2014
Pages 38-43

L.М. Purish, L.G. Asaulenko, A.N. Ostapchuk

Zabolotny Institute of Microbiology and Virology of National Academy of Sciences of
the Ukraine, Kiev

Keywords: sulfate-reducing bacteria, biofilm, exopolymeric complex, microbial corrosion, N-decyl-pyridinium chloride corrosion inhibitor

The influence of N-decyl-pyridinium chloride on biofilm formation on the surface of St3 steel and composition of the carbohydrate components of produced exopolymeric complex by sulfate-reducing bacteria was studied. It is noted to high specific productivity of exopolymeric
complex in biofilm formed at the surface of metal under the influence of the corrosion inhibitor. Interacting with carboxyl groups of exopolymeric complex synthesized by bacteria, N-decyl-pyridinium chloride promotes strengthening biofilm structure and adsorptive
protective film on the surface of St3 steel.