Food sterilization equipment is a critical piece of machinery in the food processing industry, employing physical or chemical methods to inactivate microorganisms, thereby extending shelf life and ensuring food safety.

I. Mainstream Equipment Types and Technical Characteristics

High-temperature thermal sterilization equipment

Static sterilization pot/steam cooking pot : Suitable for canned, bagged, or bottled foods; available in vertical or horizontal configurations; achieves high temperatures (>100°C) through pressure control.

Spray-type sterilization kettle : Rapid and uniform heating is achieved through hot-water spraying or the mixing of steam and water mist, with minimal requirements for packaging materials and higher efficiency than static kettles. It is commonly used for plastic containers and flexible packaging.

Plate-type sterilization complete set of equipment Designed for liquid products, it employs an ultra‑high‑temperature short‑time (UHT) processing technology—holding at 135°C to 143°C for 4 to 5 seconds—with high heat recovery efficiency and a compact design, making it suitable for products such as yellow wine, dairy beverages, and fruit juices.

Principle : Food is directly heated using steam or a high-temperature water bath, causing microbial proteins to denature and die.

Features : Sterilization is thorough, but it may degrade heat-sensitive components.

Common devices ：

Microwave sterilization equipment

Low-temperature rapid : Sterilization temperature: 65°C–85°C; duration: 3–8 minutes, preserving more nutrients and flavor.

Even and thorough Microwaves have strong penetration, enabling simultaneous heating of both the surface and interior, thereby eliminating the temperature differential between the inside and outside that is common in conventional thermal sterilization.

Energy-saving and efficient : Directly applied to food, with no additional heat loss, resulting in energy savings of 30% to 50%.

Principle : It leverages both the thermal effect of microwaves (raising the temperature of the material) and the biological effects (altering cell membrane permeability and disrupting DNA structure) to achieve a synergistic effect.

Features ：

Applicable Scenarios : Powdered products (such as flour and starch), instant foods (such as instant noodles and pickled vegetables), agricultural and sideline products, and high-viscosity liquid foods.

Ultraviolet disinfection equipment

Principle : UVC at a specific wavelength (254 nm) is used to disrupt microbial DNA.

Features : No chemical residues, but poor penetration; direct irradiation is required.

Applicable Scenarios : Water treatment (e.g., for beverage production), surface disinfection (conveyor belts, equipment surfaces), and packaging material treatment.

Irradiation sterilization equipment

Principle : Use gamma rays (such as those from Co-60) or electron beams to penetrate packaging and eliminate microorganisms.

Features : It provides thorough disinfection, but requires specialized protective equipment and is restricted in some countries.

Applicable Scenarios : Deep sterilization of medical devices, pharmaceuticals, and food.

Ozone sterilization equipment

Principle : Utilizes the strong oxidizing power of ozone to disrupt microbial cell walls and DNA structures.

Features : Broad-spectrum disinfection with no chemical residues, but the concentration must be strictly controlled.

Applicable Scenarios : Beverage processing, dairy processing, fruit and vegetable processing, and production water treatment.

II. Application Scenarios and Equipment Selection

Beverage processing industry

Demand : Raw material sterilization, cap disinfection prior to filling, and prevention of secondary contamination.

Recommended Devices : Ultraviolet sterilizers (for water treatment), spray-type sterilization kettles (for bottled beverages), and hydrogen peroxide sterilization systems (for aseptic packaging).

Dairy processing industry

Demand : Rigorous sterilization to extend shelf life while preserving nutritional content.

Recommended Devices : Plate-type pasteurization complete equipment (for liquid milk), microwave sterilization equipment (for cheese and yogurt).

Meat processing industry

Demand : High-temperature sterilization or flash-freezing sterilization, and disinfection of packaging materials.

Recommended Devices : Static sterilization pot (for canned meats), flame sterilizer (for disinfecting bottle cap surfaces), ozone generator (for disinfecting cold storage environments).

Fruit and vegetable processing industry

Demand : UV or microwave sterilization preserves vitamins and flavor.

Recommended Devices : Microwave sterilization equipment (for jams and dehydrated vegetables), ultraviolet sterilizers (for surface disinfection of fruits and vegetables).