Polygodial is a selective activator of Transient Receptor Potential Anykrin 1 (TRPA1) channels. Initially painful, polygodial acts as an analgesic by desensitizing sensory neuron. Polygodial also has broad antifungal properties, and is cytotoxic against bacteria and algae.
Polygodial is a sesquiterpene dialdehyde. It is obtained from the plants Polygonum hydropiper, Warburgia ugandensis,Pseudowintera colorata and Warburgia stuhlmannii. It exhibits antifeedant activity and antimicrobial activity against insects and microbes, respectively. It is responsible for the “hot taste” in peppery spices of traditional Japanese cuisine.