CAase Enzyme Reduces Listeria Biofilms Across 11 Strains
Laboratory findings show this enzyme effectively lowers biofilm biomass, offering a potential alternative for sanitation.
Updated on Oct. 27, 2026 in Life Sciences
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Researchers have demonstrated that the enzyme CAase effectively reduces Listeria monocytogenes biofilm biomass across 11 different strains. This research-stage study highlights potential alternatives for sanitation in environments where traditional antimicrobial agents may face limitations.
Why it matters
Listeria monocytogenes frequently forms persistent biofilms on industrial surfaces that resist conventional cleaning. Developing effective enzymatic treatments is essential for improving sanitation protocols in food processing facilities to prevent contamination.
In tests on six-day-old biofilms at 30 °C, nisin demonstrated a minimum bactericidal concentration of 25 micrograms per milliliter or lower, while T110 required at least 2,048 arbitrary units per milliliter.
The details
Researchers cultivated mature six-day-old biofilms of L. monocytogenes before subjecting them to 20 to 24 hours of exposure to various treatments. CAase is an enzyme that targets the structural matrix of these biofilms, while bacteriocins like nisin and T110 are antimicrobial peptides produced by bacteria to inhibit the growth of competing strains. The study measured both total biomass reduction and the recovery of viable cells after treatment.
Timeline
Biofilms were allowed to mature for 6 days prior to testing.
Treatment exposure lasted between 20-24 hours.
The Tech Race
This research follows a pattern of investigating enzymatic degradation to overcome the limitations of traditional chemical disinfectants in food processing. It sits within a broader scientific effort to identify compounds capable of disrupting microbial biofilms that currently resist standard sanitization methods.
This research is currently in the laboratory stage and does not offer an immediate change for industrial cleaning practices. Facilities will need to wait for further studies to determine if these enzymes can be successfully integrated into existing cleaning workflows.
The takeaway
This study provides a benchmark for the relative efficacy of CAase against common bacteriocins in attacking Listeria biofilms. Interested parties should monitor upcoming research for potential synergistic combinations that may finally achieve full biomass removal.
Further reading
For broader trends in experimental sanitation and microbial control, visit the Life Sciences section.
Source note: This article includes information reported by Food-safety.
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