Salicylic acid-based poly(anhydride esters) for control of biofilm formation in Salmonella enterica serovar Typhimurium.
OBJECTIVE
Bacterial biofilms generally are more resistant to stresses as compared with free planktonic cells. Therefore, the discovery of antimicrobial stress factors that have strong inhibitory effects on bacterial biofilm formation would have great impact on the food, personal care, and medical industries.


RESULTS
Salicylate-based poly(anhydride esters) (PAE) have previously been shown to inhibit biofilm formation, possibly by affecting surface attachment. Our research evaluated the effect of salicylate-based PAE on biofilm-forming Salmonella enterica serovar Typhimurium. To remove factors associated with surface physical and chemical parameters, we utilized a strain that forms biofilms at the air-liquid interface. Surface properties can influence biofilm characteristics, so the lack of attachment to a solid surface eliminates those constraints. The results indicate that the salicylic acid-based polymers do interfere with biofilm formation, as a clear difference was seen between bacterial strains that form biofilms at the air-liquid interface (top-forming) and those that form at the surface-liquid interface (bottom-forming).


CONCLUSIONS
These results lead to the conclusion that the polymers may not interfere with attachment; rather, the polymers likely affect another mechanism essential for biofilm formation in Salmonella.


CONCLUSIONS
Biofilm formation can be prevented through controlled release of nature-derived antimicrobials formulated into polymer systems.
Rosenberg
L E
LE
Department of Food Science, Rutgers University, New Brunswick, NJ 08901, USA.
Carbone
A L
AL
Römling
U
U
Uhrich
K E
KE
Chikindas
M L
ML
D000900:Anti-Bacterial Agents / Q000494:pharmacology; D001422:Bacterial Adhesion / Q000187:drug effects; D018441:Biofilms / Q000187:drug effects* / Q000254:growth & development; D015169:Colony Count, Microbial; D005516:Food Microbiology; D049388:Polyanhydrides / Q000138:chemical synthesis / Q000494:pharmacology*; D020156:Salicylic Acid / Q000138:chemical synthesis / Q000494:pharmacology*; D012486:Salmonella typhimurium / Q000187:drug effects* / Q000502:physiology
D000900:Anti-Bacterial Agents; D049388:Polyanhydrides; D020156:Salicylic Acid