Biofilm and the Food Industry: Risks, Challenges, and Future Perspectives

Abstract: Microbial biofilm in food processing environments pose a significant threat to food safety owing to their persistence, resistance to sanitization, and role in contamination. This review concentrates on the mechanisms of biofilm formation, the impact of environmental and surface-related factors, and both existing and novel strategies for biofilm management in the food industry. Recent research indicates that microorganisms associated with biofilm display enhanced resistance to traditional disinfectants, primarily due to the protective extracellular polymeric matrix and quorum-sensing-mediated synchronization. On comparison it was observed that conventional chemical sanitizing agents are mostly insufficient; however, integrated methods that include enzymatic treatments, biosurfactants, quorum-sensing inhibitors and innovative technologies such as cold plasma, ultrasound, and pulsed electric fields demonstrate improved efficacy. Though biofilm is advantageous in industrial fermentation, their harmful impacts such as long-term equipment damage, degraded product, and public health risks are more common in food processing systems. In general, this review highlights that good biofilm management needs a technology-driven, multi-targeted approach, better hygiene practices, and a better understanding of biofilm ecology. Future research should focus on scalable, cost-effective, and sustainable strategies to reduce the risks associated with biofilm in the food industry. Keywords: Biofilms, Food Safety, Quorum Sensing, Extracellular polymeric substances, Resistance, Sanitization