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Antibacterial and antibiofilm activities of diphyllin against fish pathogens.

Microbial pathogenesis (2020-05-01)
Suman Thamburaj, Elangomathavan Ramaraj, Sivasamy Sethupathy, Chakkaravarthi Kamalanathan, Atchudan Raji, Satish Kumar Rajasekharan
RÉSUMÉ

Annihilation of biofilm forming bacterial pathogens is a challenging aspect in seafood and aquaculture industries. Microbes growing as biofilms cause deleterious effects on food products leading to food spoilage or loss of shelf life. As a measure to fight biofilms, agents that prevent/disrupt biofilms are recurrently screened. The study exemplifies the bactericidal and biofilm disruption potentials of a plant derived compound, diphyllin, against fish pathogens that colonizes Oreochromis mossambicus and Oreochromis niloticus. Precisely, diphyllin disrupted Salmonella typhi biofilms by triggering reactive oxidative species (ROS). Diphyllin-induced ROS had satisfactory correlation with S. typhi cell membrane damage and intracellular DNA degradation profiles providing a putative mechanistic model. In conclusion, the study identifies diphyllin as a therapeutic and dispersal agent aimed at biofilms formed by food-borne pathogens that persistently plague food processing and aquaculture settings.

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Sigma-Aldrich
Diphyllin, ≥98% (HPLC)