Activity of the plant-derived peptide Ib-AMP1 and the control of enteric foodborne pathogens

► Ib-AMP1 is an antimicrobial agent produced by seeds of Impatiens balsamina. ► Ib-AMP1 exhibits bactericidal activity against foodborne pathogens. ► Ib-AMP1 at 4× MIC showed less than 50% inhibition of proliferation of human liver, small intestine, and colon cells. ► Ib-AMP1 activity is influenced by binding to bacterial cells or components in the extracellular environment.