Ozone Generator in Food Processing and Safety

Ozone for food surface disinfection uses ozonated water — water with dissolved ozone at 0.5–2 mg/L generated by bubbling ozone gas through a water tank or by direct injection via Venturi. The OZ India ozone generator for food processing produces 2–10g/hr ozone from ambient air, delivering ozonated water to washing tanks, spray systems, or CIP circuits. Ozonated water contact with produce surfaces for 2–5 minutes achieves 3–4 log reduction of Salmonella, E. coli O157:H7, Listeria monocytogenes, and moulds — without the chemical residue left by chlorine (sodium hypochlorite) washing at 200 ppm.

For food contact surface sanitisation, ozonated water at 1–2 mg/L replaces or supplements conventional chemical sanitisers (quaternary ammonium compounds, peracetic acid) in CIP circuits. Ozone effectively sanitises conveyor belts, processing tables, cutting surfaces, and food-grade containers with a 5-minute contact time — achieving the same log reduction as chemical sanitisers at 100–200 ppm without the chemical handling safety risks, residue concerns, or effluent disposal requirements. The ozone-sanitised surface reverts to normal oxygen-containing atmosphere within minutes of treatment.

OZ India UV Conveyor Sterilisation Systems use UV-C radiation (254 nm) to disinfect pre-packaged food products, packaging materials, and food contact surfaces moving on a conveyor. UV penetrates only the exposed surface — making it ideal for final-stage sterilisation of packaged goods, pre-formed containers, and individual produce items where ozonated water would not be appropriate. UV conveyor systems are used for: packed spice pouches, bottled sauce caps, pre-packaged salads, bread loaves, and fresh-cut produce — providing a chemical-free surface kill step aligned with FSSAI GMP requirements.

Ozone air treatment in food processing environments continuously disinfects the processing room air, inhibiting airborne mould and bacterial contamination of exposed food surfaces. The OZ India ozone air purifier, installed in processing rooms during non-occupied hours (overnight sanitation cycles), doses ozone to 1–3 ppm in the room atmosphere for 30–60 minutes — achieving complete disinfection of all exposed surfaces, walls, ceilings, and equipment without manual chemical spray. This automated room disinfection replaces formaldehyde fogging or manual chemical spraying — eliminating chemical hazards and associated safety protocols.

The OZ India Ozone Fruit and Vegetable Washing Machine combines ozone generation, water circulation, and ultrasonic agitation in a single unit. Produce is placed in the wash tank; the system generates 1–2 mg/L ozonated water while ultrasonic transducers dislodge surface-attached pesticide residues, bacteria, and soil particles. A 5-minute wash cycle achieves pesticide reduction and 3-log pathogen kill simultaneously. The washing machine is available in 50 kg/batch and 100 kg/batch capacities for food processing units, institutional kitchens, and packing houses.

Cold storage ozone application uses OZ India's 2g/hr or 5g/hr ozone generator in a timer-controlled dosing cycle: ozone is dosed to the cold room atmosphere at 0.1–0.3 ppm for 1–2 hours per night (during non-occupied periods, as ozone at these concentrations requires personnel to exit the room). This mould-inhibiting concentration, maintained consistently throughout the storage season, extends fruit and vegetable shelf life by 3–7 days. Ethylene scrubbing occurs simultaneously at these ozone concentrations — OZ India's integrated ozone + ethylene scrubbing system for high-value fruit storage (mango, apple) is available on request.

OZ India Technology food processing ozone solutions cover all food safety applications from small institutional kitchens to large export packing houses. The Ozone Fruit and Vegetable Washing Machine (50–100 kg capacity) is a standalone unit for produce washing, pesticide reduction, and shelf-life extension. The industrial ozone generator for CIP and surface sanitisation (2–10g/hr, air-fed) serves medium to large food processing plants. The UV Conveyor Sterilisation System handles packaged goods disinfection at conveyor speeds up to 10 m/min. The ozone air purifier for cold storage and processing rooms completes the comprehensive food safety solution.

All OZ India food processing ozone systems use food-grade materials: 316L stainless steel, PVDF, HDPE, and EPDM for all food-contact or food-adjacent components. No materials that can contaminate food or ozonated water are used. Systems are designed for washdown environments — IP65 rated control panels, stainless steel equipment bodies. The OZ India ozone systems for food processing are CE certified and manufactured under ISO 9001:2015 quality management — providing the certification documentation required by FSSAI-licensed processors and export market buyers (BRC, FSSC 22000 certified plants).

For export-oriented food processors (mangoes, grapes, pomegranates to EU and Gulf), OZ India ozone and UV systems assist in meeting the import country food safety requirements: EU Regulation 2073/2005 on microbiological criteria, USFDA FSMA Produce Safety Rule, and Gulf Cooperation Council (GCC) food safety standards. Ozone treatment records (date, dose, contact time) generated by OZ India's automatic control systems provide the HACCP documentation trail required by GFSI audit bodies (BRC, SQF, FSSC 22000) for Critical Control Point (CCP) validation.

OZ India provides food processing ozone systems with turnkey installation, commissioning, FSSAI documentation support, and HACCP integration guidance. Our food safety equipment references include packing houses in Nashik (grapes), Konkan (mangoes), Amritsar (vegetables), and institutional kitchens at hospital chains and 5-star hotel groups across India. We provide a post-installation water quality report (ozone concentration, microbial count before/after) that clients can use in their FSMS documentation for FSSAI inspections.

Ozone system sizing for food processing depends on the application: For produce washing — washing machine capacity (kg/batch) determines water tank volume and ozone dose. A 50 kg/batch washing machine requires a 100–150 litre tank with 1–2 mg/L dissolved ozone, requiring a 2g/hr ozone generator for 5-minute batch cycles. For CIP sanitisation — pipe volume and surface area of the CIP circuit determine the total ozone load. Typical CIP ozone concentrations are 0.5–1.5 mg/L with 5–10 minute contact time; a 500 litre CIP loop requires 2.5 g of dissolved ozone maintained.

For cold storage ozone, room volume determines the ozone generator size. A 100 m³ cold room requires the ozone concentration to be raised from ambient (0 ppm) to 0.2 ppm in 30 minutes of dosing: mass required = 100 m³ × 0.2 mg/m³ × 1.6 (safety factor) = 32 mg ozone. A 2g/hr generator produces 0.56 mg/sec — more than sufficient, but the actual ozone demand includes ozone decay on surfaces (typically 1–5× the target concentration as ozone demand from produce surfaces and cold room walls). OZ India provides cold room sizing calculations based on room volume, produce type, and daily turnover.

UV Conveyor Sterilisation System sizing requires: conveyor belt width (200–600 mm standard), conveyor speed (1–10 m/min), and target UV dose (10 mJ/cm² for packaged goods surfaces; 40 mJ/cm² for unwrapped produce). OZ India UV conveyor systems have modular lamp housings — additional lamp modules are added for higher conveyor speeds or larger doses. Standard configurations: 300 mm belt width, 2–5 m/min, 40 mJ/cm² dose for fresh produce. Contact OZ India with your conveyor specifications for a custom configuration.