Biofilm dispersal by MAHMA NONOate. Biofilms were formed by E. coli O157:H7, Salmonella sv. Typhimurium 14028 and a cocktail of the six Salmonella strains linked to human produce-related gastroenteritis outbreaks on polystyrene (black bars) or polypropylene (grey bars) prior to the treatment with MAHMA NONOate. Contact times and temperatures at which biofilms were exposed to the nitric oxide donor are listed above each panel. Concentrations of the nitric oxide donor are on the x-axis.