The phytochemicals, which are secondary metabolites from plants, have been proven to have antimocrobial action against some bacteria, including biofilms. Some of these phytochemicals can be extracted from plants that are typically used as food.
Please consult the publications attached.
best wishes
Madalena Lemos
Chapter Phytochemicals Against Drug-Resistant Microbes
Article The effects of ferulic and salicylic acids on Bacillus cereu...
Article Plants as sources of new antimicrobials and resistance-modif...
Article Antibacterial Activity and Mode of Action of Ferulic and Gal...
Article Understanding antimicrobial activities of phytochemicals aga...
we have tested in our laboratory many times the extracts from the lmedicinal plants and thy have been shown potential antimicrobial ativity best wishes