Architectural & Engineering Fundamentals for Sanitary Food Facilities
Contamination prevention in modern ready-to-eat (RTE) fruit and salad manufacturing begins on the architectural CAD drawing board. Proper physical zoning and directional flow ensure that pathogens from field soil cannot enter sterilized packaging cleanrooms.
The Four Hygienic Zones of a Processing Plant
- Zone 1 – Raw Intake & Dry De-soiling: Negative air pressure intake area.
- Zone 2 – Primary Washing & Sizing: Wet dirt removal with physical stainless washdown barriers.
- Zone 3 – Precision Cutting & Sanitization: High-care cleanroom with positive pressure (+15 Pa) and HEPA air filtration.
- Zone 4 – Spin-Drying & MAP Packaging: Low-temperature controlled environment (≤ 10°C).
