What are biofilms and how are they controlled in industrial settings?

Biofilms are surface-attached microbial communities encased in extracellular polymeric substance (EPS) matrix. In industrial settings, biofilms cause: equipment fouling, reduced heat transfer, contamination reservoirs, and product quality issues. Biofilm characteristics: enhanced resistance to antimicrobials (100-1000x), protection from cleaning agents, and persistence despite sanitization. Control strategies include: hygienic design (smooth surfaces, proper drainage, no dead legs), regular cleaning to prevent establishment, mechanical disruption, enzymatic cleaners targeting EPS, appropriate sanitizer selection and contact time, and monitoring for biofilm indicators. Detection methods: ATP bioluminescence, visual inspection with UV, and culture-based sampling. Prevention is more effective than removal of established biofilms.