Abstract
AbstractThe objective of the study was to determine the effects of organic acids and plant extract alone and in combination when applied by electrostatic spraying onEscherichia coliO157:H7‐inoculated cantaloupe cubes. Inoculated cubes were sprayed with malic (M) and lactic (L) acids and grape seed extract at different concentrations (alone and various combinations) then stored at 4C. Under optimized concentrations,ML2% was able to reduceE. coliO157:H7 by 1.9 logs after 12 days of storage and was significantly different from the controls (P < 0.05). Increasing the concentration ofM(4%) alone and in combination withL(2%) caused an increase in log reduction (4.6 logs). These treatments can be used as alternatives to commercial sanitizers in order to improve the safety of fresh‐cut cantaloupe cubes. Multiple hurdle technology of electrostatic sprayer combined with natural antimicrobials can be effective in improving the safety of food.Practical ApplicationElectrostatic sprayer is a technology that can be used to enhance the effectiveness of antimicrobials. Organic acids and plant extracts can be used as antimicrobials to efficiently reduce contaminated cantaloupe cubes when combined with electrostatic sprayer. This multiple hurdle technology can be used in different food industry settings.
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