antimicrobial property of lycopene oleoresin on some food pathogens running head: lycopene oleoresin antibacterial potent

the aim of this work was to study the antimicrobial activity of tomato skin lycopene oleoresin against pseudomonas aeruginosa، escherichia coli، staphylococcus ureuse، salmonella typh ، l. monocytogenes ، bacillus cereus، bacillus licheniformis. oleoresin was extracted from tomato peel. lycopene content was measured by spectrophotometer. lycopene oleoresin contained 2321mg lycopene/ 100 g oleoresin diluted in serial micro-dilution technique from 40,000 to 78.125 ppm. microbial culturing was done in elisa 96-well micro-titer plates in triplet and then mic and mbc were determined. the results were shown that tomato peel oleoresin contained 2% lycopene, can inhibit and restrain the gram positive and negative bacteria.