Inhibitory Effect of 2R,3R-Dihydromyricetin on Biofilm Formation by Staphylococcus aureus

Foodborne Pathogens and Disease
Yan-Ping WuHong Gao

Abstract

The adherence and biofilm formation of Staphylococcus aureus on food contact surfaces are a major concern for the food industry. Development of antibiofilm agents from polyphenols has drawn much attention due to their potent activity. The present study explored the antibacterial and antibiofilm activities of 2R,3R-dihydromyricetin (DMY) against S. aureus ATCC 29213. It was found that DMY exerted excellent antibacterial and bactericidal properties against S. aureus with minimum inhibitory concentration and minimum bactericidal concentration values of 0.125 and 0.25 mg/mL, respectively. Crystal violet staining and 2,3-bis (2-methoxy-4-nitro-5-sulfophenyl)-2H-tetrazolium-5-carboxanilide sodium salt reduction assay demonstrated that DMY significantly reduced the biofilm biomass of S. aureus and decreased the metabolic activity of biofilm cells. Micrographs of light microscope and scanning electron microscope confirmed that DMY inhibited the biofilm formation and caused a disintegration of the complex biofilm architecture. Moreover, DMY was highly efficient in reducing the number of sessile S. aureus cells adhered to stainless steel. These results suggested that DMY could have potential application to control S. aureus contamination...Continue Reading

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Citations

Jul 25, 2019·International Journal of Molecular Sciences·Yvana GlasenappJutta Papenbrock

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