Dried plums, otherwise known as prunes, have been shown to possess antimicrobial properties that can help keep meat safe. Scientists at Kansas State University tested the impact of prunes on ground meat that was contaminated with common foodborne pathogens, and round that raw meats mixed with as little as 3% of plum extract are "over 90% effective in suppressing the growth of major food-borne pathogens such as E. coli 0157:H7, Salmonella, Listeria, Y. enterocolitica, and Staphylococcus," reports