This article reviews the patents showing the use of antimicrobial agents in processing plants to eliminate the growth of the microorganism that affects on the quality and safety of the end products. Several materials have unique antimicrobial effects, especially towards biofilms in the processing equipments. The selection of a proper antimicrobial agent is essential to obtain the best results in preserving foods. The antimicrobial agent must not be toxic, and many factors need to be considered in choosing the right antimicrobial agent.
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