Inhibition of Pseudomonas aeruginosa and Escherichia coli O157:H7 Biofilm formation by plant metabolite Ε-viniferin

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[1] Cho, Hyun Seob
[2] Lee, Jin-Hyung
[3] Ryu, Shi Yong
[4] Joo, Sang Woo
[5] Cho, Moo Hwan
[6] Lee, Jintae
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Lee, J. (jtlee@ynu.ac.kr) | 1600年 / American Chemical Society卷 / 61期
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Pathogenic biofilms are associated with persistent infection due to their high resistances to diverse antibiotics. Pseudomonas aeruginosa infects plants; animals; and humans and is a major cause of nosocomial diseases in patients with cystic fibrosis. In the present study; the antibiofilm abilities of 522 plant extracts against P. aeruginosa PA14 were examined. Three Carex plant extracts at a concentration of 200 μg/mL inhibited P. aeruginosa biofilm formation by >80% without affecting planktonic cell growth. In the most active extract of Carex pumila; resveratrol dimer Ε-viniferin was one of the main antibiofilm compounds against P. aeruginosa. Interestingly; Ε-viniferin at 10 μg/mL inhibited biofilm formation of enterohemorrhagic Escherichia coli O157:H7 by 98%. Although Carex extracts and trans-resveratrol are known to possess antimicrobial activity; this study is the first to report that C. pumila extract and Ε-viniferin have antibiofilm activity against P. aeruginosa and E. coli O157:H7. © 2013 American Chemical Society;
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