Microbiological Food
Hygiene Testing

From Aerobic Plate Count to E. coli, our microbiological food hygiene testing transforms raw samples into actionable hygiene-monitoring intelligence using FDA LAAF-recognized and AOAC-validated methods.

Recognition
FDA LAAF Recognized
Indicator Organisms
APC · Coliforms · E. coli · Yeast & Mold · LAB
Reporting
In-house validated · ISO 17025 partner network on request
Turnaround
24–48h (rapid) · 48–72h (Yeast/Mold)

Our Mission: Reliable Microbiological Food Hygiene Testing

In an industry where a single recall can devastate a reputation, certainty is your most valuable asset. AGT Food Labs delivers microbiological food hygiene testing through FDA LAAF-recognized methodology and AOAC-validated indicator-organism enumeration. From routine sanitation monitoring (APC) to fecal-indicator screening (E. coli) and spoilage-organism profiling (Yeast & Mold, Lactic Acid Bacteria), our facility produces the data that anchors your FSMA Food Safety Plan.

Scope note: Our PJLA ISO/IEC 17025:2017 accreditation (Cert L24-482-R2) covers chemistry methods (heavy metals, pesticides, water activity, pH, peroxide value, FFA, titratable acidity). Microbiological methods are not currently within that PJLA scope. AGT performs microbiological food hygiene testing under FDA LAAF Recognition using AOAC-validated rapid methods (Petrifilm™, Compact Dry); when an ISO/IEC 17025 accredited Certificate of Analysis is required for a specific micro panel, we coordinate testing with our accredited partner laboratory network and consolidate results into a single report.

Microbiological Food Hygiene Testing Services

Indicator-organism enumeration for FSMA compliance and quality assurance — APC, Coliforms, E. coli, Yeast & Mold, and Lactic Acid Bacteria via FDA LAAF-recognized AOAC-validated commercial methods.

Aerobic Plate Count enumeration for microbiological food hygiene testing
General Quality & Shelf-Life Indicator

Aerobic Plate Count (APC)

The Aerobic Plate Count enumerates mesophilic bacteria growing in aerobic conditions and serves as the primary gauge of total bacterial load in a sample. Elevated APC results commonly indicate temperature abuse upstream in the supply chain or sanitation breakdowns on the production line.

AOAC-Validated Methods Used:
  • AOAC 990.12 (Petrifilm™)
  • AOAC 2015.13 (Rapid)
Technical Specs:

Sample Size: 100g minimum | LOD: < 10 CFU/g | Shipping: Refrigerated (2–8°C)

Industry Application:

Used universally across meat, dairy, produce, and prepared-foods sectors to set baseline quality specifications and predict remaining shelf-life.

Coliform count for microbiological food hygiene testing
Hygiene Indicator & Sanitation Check

Coliform Count

Coliforms are environmentally widespread bacteria that are easily destroyed by heat. Their presence in a pasteurized product is a definitive sign of post-processing contamination — making coliform enumeration a cornerstone of microbiological food hygiene testing for dairy, beverages, and ready-to-eat foods.

AOAC-Validated Methods Used:
  • AOAC 991.14 (Petrifilm™)
  • FDA BAM Ch. 4 (MPN)
Technical Specs:

Sample Size: 100g or 1 environmental swab | LOD: < 10 CFU/g | Shipping: Refrigerated

Industry Application:

Critical for dairy pasteurization verification, water quality monitoring, and sanitation effectiveness checks on food-contact surfaces.

Generic E. coli enumeration for microbiological food hygiene testing
Fecal Contamination Indicator

E. coli (Generic)

Generic Escherichia coli is the subset of the coliform group that originates exclusively from the gut. Unlike total coliforms, E. coli enumeration provides a direct fecal-contamination signal — a positive result raises the probability that pathogens like Salmonella may also be present and triggers a deeper investigation.

AOAC-Validated Methods Used:
  • AOAC 991.14 (Petrifilm™)
  • AOAC RI 110402 (Compact Dry)
Technical Specs:

Sample Size: 100g or 1 environmental swab | LOD: < 10 CFU/g | Shipping: Refrigerated

Industry Application:

Primary safety indicator in fresh produce, raw meats, and irrigation water. Often configured as a critical control point (CCP) in HACCP plans.

Yeast and Mold enumeration for microbiological food hygiene testing
Spoilage Control & Mycotoxin Risk

Yeast & Mold

Fungi thrive in conditions where bacteria struggle — low water activity, low pH, high sugar. Our Yeast & Mold enumeration screens these spoilage organisms to protect product quality in dried, acidic, and reduced-Aw matrices, with rapid 48-hour AOAC-validated readouts.

AOAC-Validated Methods Used:
  • AOAC 997.02 (Petrifilm™)
  • AOAC 2014.05 (Rapid)
Technical Specs:

Sample Size: 100g | LOD: < 10 CFU/g | Shipping: Ambient or Refrigerated (do not freeze)

Industry Application:

Essential for bakery shelf-life, dairy spoilage control (cheese, yogurt), dried fruit, and acidic sauces. Pair with a water-activity / pH study for full spoilage risk modeling.

Lactic Acid Bacteria enumeration for microbiological food hygiene testing
Anaerobic Spoilage Detection

Lactic Acid Bacteria (LAB)

Lactic Acid Bacteria can be beneficial (in fermented dairy and pickles) or destructive (in vacuum-packed meats and dressings). Targeted LAB enumeration detects these facultative anaerobes that standard aerobic counts miss — a key piece of microbiological food hygiene testing for processed-meat, dressing, and acidified-product manufacturers.

Methods Used:
  • AOAC 990.12 (modified aerobic count)
  • MRS Broth enrichment
Technical Specs:

Sample Size: 100g | LOD: < 10 CFU/g | Shipping: Refrigerated (2–8°C)

Industry Application:

Crucial for processed meats (hot dogs, deli slices), salad dressings, and shelf-stable acidified products. Pair with pH and water activity data for full spoilage modeling.

Industries Using Our Microbiological Food Hygiene Testing

Microbiological food hygiene testing programs supporting US food and beverage manufacturers across every major vertical.

Bakery microbiological hygiene monitoring

Bakery

Yeast & mold control and shelf-life extension.
Dairy microbiological hygiene monitoring

Dairy

Coliform-based pasteurization verification.
Meat microbiological hygiene monitoring

Meat & Poultry

APC and E. coli for raw and processed goods.
Produce microbiological hygiene monitoring

Produce

Hygiene checks for irrigation water and food-contact surfaces.
Water microbiological monitoring

Water

Microbiological analysis for potability programs.
Environmental hygiene monitoring

Environmental

Surface and air swab monitoring in production areas.

Why Choose AGT Food Labs?

Microbiological food hygiene testing with technical rigor and the agility of a dedicated safety partner.

★
FDA LAAF Recognized

Recognized under the FDA Laboratory Accreditation for Analyses of Foods program; ISO 17025 partner network handles accredited cert reporting on request.

⚡
Rapid Results

24-hour rapid turnaround for APC, Coliforms, and E. coli; 48–72 hours for Yeast & Mold (incubation-bound).

👥
Expert Support

Direct access to technical managers for result interpretation, root-cause work, and HACCP integration.

Common Questions About Microbiological Food Hygiene Testing

Is AGT's microbiological food hygiene testing PJLA-accredited?
Microbiological methods are not currently included in our PJLA ISO/IEC 17025:2017 chemistry scope (Cert L24-482-R2). AGT performs micro testing under FDA LAAF Recognition using AOAC-validated rapid methods (Petrifilm™, Compact Dry, FDA BAM). When a buyer or regulator requires an ISO/IEC 17025 accredited Certificate of Analysis specifically for the micro panel, we coordinate testing with our accredited partner laboratory network at no additional coordination fee.
What does Aerobic Plate Count (APC) indicate in food testing?
APC measures the total mesophilic aerobic bacterial population in a sample. It is a key indicator of overall quality, freshness, and sanitation effectiveness, but it does not identify specific pathogens.
Why are Coliforms and E. coli tested separately?
Coliforms indicate general sanitation hygiene. Generic E. coli is a specific subset of coliforms found in feces; its presence indicates direct fecal contamination and elevates the probability that pathogens such as Salmonella or E. coli O157 may also be present.
What are acceptable limits for Yeast and Mold in food?
Limits vary by product type. High counts can cause spoilage, off-flavors, and reduced shelf life. We help interpret results against industry standards specific to your product category.
Does a low APC result guarantee the food is safe?
No. APC measures general quality, not pathogen status. Specific pathogens like Listeria or Salmonella can be present in low numbers even when total bacterial count is low — pathogen-specific testing is required for true safety verification.
How often should hygiene monitoring be performed?
Frequency depends on production volume and risk profile. We recommend a regular cadence (per batch, per shift, or weekly) and increased testing immediately following any process changes or sanitation incidents.
What is the turnaround time for standard hygiene tests?
Using rapid Petrifilm™ or Compact Dry methods, we typically deliver results for APC, Coliforms, and E. coli within 24–48 hours. Yeast & Mold requires a 48–72 hour incubation that cannot be rushed biologically.

Ensure Production Safety with Microbiological Food Hygiene Testing

Validate your sanitation protocols with FDA LAAF-recognized indicator-organism testing.

Request a Hygiene Quote
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