Coliform Control for Drains + Floor Tools
Area of Concern
Sterilex was contacted by a global manufacturer of bread and baked goods with concerns about their environmental surfaces — particularly drains and floors. The plant had high coliform and Listeria results in some of these areas.
Issue
High total coliform and intermittent Listeria positives on floors and in drains, potentially risking cross-contamination to food contact surfaces or product.
Background
The source of the problem was suspected to be a lack of biofilm control on environmental surfaces in the facility. Sterilex was brought in to recommend an SSOP for biofilm control and resistant organism control.
Recommendations
Sterilex recommended the addition of their comprehensive Drain Sanitation Protocol, which is powered by Sterilex’s patented EPA-registered PerQuat® technology to help kill hard-to-reach organisms and remove biofilm.
Results
Microbial Testing
A large drop was observed in the coliform results in the three areas tested.
| Location Name | Pre-Treatment Coliform (CFU) | Post-Treatment Coliform (CFU) |
|---|---|---|
| HVAC Drain #1 | 5,000 | <10 |
| HVAC Drain #2 | 235,000 | 200 |
| Floor Tools | 6000 (17 E. coli) | <10 |
Conclusions
As observed in this trial, the treatment of drains and floor tools with Sterilex PerQuat technology resulted in a large reduction in coliforms. Coliforms like E. coli are protected and housed in biofilm colonies, and Sterilex’s PerQuat solutions were developed to target this biofilm reservoir of bacteria. This case study suggests that Sterilex PerQuat technology is effective at penetrating and removing biofilm in hard-to-reach areas, which enables kill of biofilm pathogens as well.
Similar results may be observed in any plant with drains by following a similar protocol.
DRAINS + FLOORS
Before + After Sterilex Treatment
Area of Concern
The appearance and sanitary condition of drains and floors in a coffee processing facility.
Issue
A large coffee processing plant was chosen by its parent company as a trial location for Sterilex’s drain and floor sanitation program company-wide. This plant was chosen due to long-standing high microbial coliform counts, periodic pathogen positives, and the presence of a black “tar-like substance” in and around the drains.
Background
The plant was using a floor scrubber to clean the plant floors and drain surfaces on a nightly basis using conventional detergents. Drains were cleaned and sanitized nightly using conventional sanitizers. The plant had experienced high microbial counts and pathogen positives on the floors and drains for a number of years.
Results
Following one week of the drain/floor trial, all coliform and E. coli counts were reported below the detectable limit and there were zero positives for Salmonella or Listeria among all swabs tested for the week.
Drain 1
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Drain 2
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