An antimicrobial treatment method for non-thermal pasteurization and anti-microbial treatment of solid, semisolid, or liquid foods in industrial food transport systems is provided. For solid food applications, the method and related apparatus comprises a conveyor-based transport system. For semisolid or liquid food applications, the method and related apparatus comprises a conduit-based transport system. Both the conveyor-based and conduit-based transport systems are capable of treating food with ultrasound, a UV-ruby lightwave combination, a pulsed electric field, and/or a magnetic field. The method is capable of realizing greater than 3 log reductions in live microbes in foodstuffs, although the technology may be used in nonfood applications.