Removal of Listeria monocytogenes, Staphylococcus aureus and Escherichia coli O157:H7 biofilms on stainless steel using scallop shell powder

► E. coli and L. mono. were best attaching pathogens in WPS and BWW, respectively. ► BWW was a better media for biofilm formation than WPS. ► SSP (0.5%) exposure cleaned pathogens by 3-5 logs. ► The most sensitive bacteria for SSP exposure were found to be E. coli O157:H7. ► SSP was more effective on cleaning biofilm formed in WPS than in BWW.