The food industry is always racing to the bottom. Once the animal is slaughtered or the plant is harvested, it inevitably begins to decay. Bacteria and microorganisms can be present in food. If we want to make our products available to the public, we need to make sure they don’t endanger consumers’ health. To this end, the sterilization process must be carried out in accordance with applicable health regulations with as little impact as possible on the food and its characteristics.

Heat treatment of products is one of the main techniques for food preservation in food industry. We help perfect control of the entire food production process to help you develop the most efficient heat treatment process while preserving sensory characteristics and minimizing possible changes in the nutritional properties of the final product. Food sterilizers can be found for a variety of sterilization procedures and capacities, such as steam sterilizers, water bath sterilizers or rotary sterilizers, microwave sterilizers, heat seal ovens, etc. As an autoclave manufacturer, we offer you the right thermal processing technology for food.

Autoclave start-up, validation and maintenance services are also part of our services. We also advise you on the best option for sterilization process or process optimization.

Why should I buy a food sterilizer?

Buying a steriliser is never an expense. On the contrary, it is an investment in the short, medium and long term. This is because it assumes.
1. saving a lot of time. We must not forget that time is money. An autoclave helps to sterilise a large number of containers and their subsequent preservation. This means less input and therefore more time for other tasks.
2. Perfect preservation of products. Thanks to its high temperatures, the steriliser inactivates all bacteria, spores and other micro-organisms, ensuring that food lasts longer, maintains organoleptic properties and minimises possible changes in the nutritional characteristics of the final product.
3. Versatility. These types of equipment are available in different chamber sizes and they are compatible with different types of food containers.

What foods can be used for sterilization during the production process?

Apply to all of your products
Spices	Dried vegetables, fruit	Beverages (vegetable proteins, tea, coffee)	Herbs
Cereals	Tea	dairy products	fish and seafood
ready-to-eat food	Pet food	Baby food	Sauces
Creams	Coffee	Ketchup	Cheese
Honey	Sugar	Mayonnaises	Other food

And all your packaging

1. Cans: aluminium cans, aluminium bottles, tin cans, tinplate cans, glass cans

2. Plastic bottles (PP bottles, HDPE bottles)

3. Flexible pouches (P/PE packaging, stand-up pouches, steaming pouches, aluminium foil pouches, high temperature pouches, vacuum pouches.)

 

What are the sterilization methods for heat treatment?

1. Dry heat sterilization – the highest safety level

Dry heat sterilization is one of the most practical and preferred forms of sterilization, using blown hot air to eliminate or inactivate all life forms in industrial ovens and can be modified to meet a wide range of sterilization requirements.

• Hot Air Oven

 

The hot air oven is suitable for raw materials in the pharmaceutical, chemical, food, agricultural and sideline products, aquatic products, light industry, etc. The food dryer is suitable for heating, curing, drying and dehydrating many kinds of raw materials such as fruits, vegetables, meat, fish and nuts.

The air is fed by axial flow fans (optional high temperature resistant fans) and forced air circulation is carried out using electric heaters or steam exchangers in the drying room, thus enhancing heat transfer, increasing the moisture evaporation rate and shortening the drying time. The circulation system is completely sealed. It increases the thermal efficiency from 3-7% in conventional ovens to almost 40%. Maximum thermal efficiencies of up to 70% can be achieved.
This dry-heat oven is often inexpensive, saving energy and significantly reducing product costs, making it more economical. The heat penetrates deep into thick objects to achieve a deep sterilisation effect, even inside the packaging. There is no need to worry about products with packaging, metal objects can be sterilised quickly at high temperatures and are not corrosive. No human involvement or intervention is required during the operation, but someone must set up the oven and allow it to complete its cycle. The object can be removed and used almost immediately, as it will cool quickly.

However, dry heat sterilisation takes much longer than steam, flame, chemical sterilisation or radiation. And because complete sterilisation is achieved by exposure to a specific temperature for a specified length of time (e.g. 180°C for 30 minutes), irreversible damage can be caused to sensitive materials such as plastics, rubber products, etc. Dry heat sterilisation is only suitable for materials that are not sensitive to heat because, unlike sterilisation using steam, this method requires higher temperatures to effectively kill bacteria, viruses or fungal spores with dry heat. This means that reusable metal and glass packaging, for example, can be sterilised.

 

2. Moist heat sterilization

Wet heat sterilization is a kind of sterilization technology with hot water steam as the medium, is the best sterilization effect, the most widely used sterilization method.

Steam is a cheap and efficient heat carrier. Steam autoclave is a more efficient method than dry heat sterilization because moisture in steam is a good heat conductor and has the advantage of penetrating loads. Because less energy is required, steam sterilization can reduce energy consumption while increasing productivity, thereby saving costs. Most materials contribute to steam sterilization.

• Steam Autoclave

DZG Food Autoclave Structure：

 

Sterilization Of Pepper And Spices：

 

Steam sterilizers are used for all types of products except oil and powdered food, because steam cannot penetrate items. Improperly cleaned, impermeable packaging or excessive packaging in autoclave can reduce the effectiveness of steam sterilization.

Food sterilizers can be used in a variety of facilities, including poultry farms, breweries and breweries, food manufacturing plants, agricultural research laboratories and food testing laboratories.

We offer a variety of cavity sizes and compatible modular units that can be integrated and installed according to your application requirements to form a complete solution. Food sterilization solutions to meet the needs of customers in chemical, food health, medicine, biology and other industries.

 

• Water spray sterilizer

SG Water Spray Structure：

Water spray sterilizers are manufactured from heavy duty components and are the most economical solution for a wide range of products and packaging. It is suitable for most products and packaging that can be sterilized in static mode.

Compared with steam sterilizers, water bath sterilizers have better temperature uniformity. Fine sprays are used, and these sprays enter the chamber from the side and above, ensuring uniform and rapid heating and producing uniform temperature distribution during heating and cooling.

Because the temperature gradient of steam sterilization heat exchange can not be controlled effectively, it is easy to produce the phenomenon of bottle bursting. Water bath sterilization direct injection of steam mixed with fine water droplets, due to physical contact between water and the container, so the heat transfer efficiency is higher, and the process efficiency is not affected by air holes.

 

In general, the water bath sterilizer rises and falls the temperature quickly and evenly, so that the whole sterilization cycle is shortened, the bottle burst rate is low, the sterilization function is reliable, the finished product rate is high, so its operation cost is not lower than the pressure steam sterilization cabinet.

The water bath sterilizer instead uses hot water as sterilization medium, which overcomes the shortcomings of steam sterilization, and has the advantages of uniform heating, accurate temperature control, no absolute hot spot and cold spot, etc., and is being widely used.

• Water Spray Rotary Sterilizer 

Rotary processing uses superhot water for spraying, which provides better product quality and processing efficiency, and ensures better preservation of the natural texture of the food due to the shaking process. Rotational (end-to-end) or horizontal reciprocating motion can also be used to enhance convective heating and cooling of the product inside the package, which can reduce cycle time, which in turn helps minimize degradation of the product due to heat. As a result, cooking damage is reduced in taste, texture and appearance. Stirring the product during heating prevents the container walls from burning.

Water spray with overpressure process provides precise temperature and pressure control to handle the finest packaging types, and rotary agitation function further enhances machine flexibility by providing a fast and efficient process for thermal and/or other convection heating and cooling products. As the tilt changes, water scouring intensifies, especially for centrally located containers. This helps shorten the process flow; Deviations within batches are minimized. Depending on the geometry of the package and the viscosity of the product, 6 to 10 oscillation cycles can be performed per minute.

 

The sterilizer is used for sterilization and disinfection of all kinds of drinks and food, mainly for liquid in sealed containers, especially for sterilization of bottled and canned food and products with high viscosity and large capacity. Including canned fruits or vegetables in juice/water/brine; Soup/ready to eat; Whole fat, evaporated milk and flavored milk; Infant formula and nutritional drinks.

 

3. Microwave sterilization

Microwave sterilization is an emerging technology. It is a technology that effectively combines low calories and microwave energy to sterilize food.

• Microwave Sterilization Drying Machine 

Microwave Sterilization Video：

Microwave drying is an environmentally friendly and dry method with high efficiency economy. It has the advantages of low energy consumption and high efficiency. It has no radiation damage and harmful gas emissions, and does not produce waste heat and dust pollution.

Microwave packaging food sterilization machines are mainly suitable for various bags, vacuum bags, casual foods and specialty foods, such as meat pine, various preserved fruits, salted ducks, chicken, beef, odor, herbs, dried grains, seaweed bags, sacks, seaweed bags, seaweed, laver bags, dried fish, fish fillets, laver. Various packaging agricultural products, such as bamboo shoots, shiitake mushrooms, garlic, flowers, dried fruits, vegetables, shiitake mushrooms, sweet potatoes, corn, pea, coconut, betel nut, fungus, lotus root flour, sesame paste, flour, starch, oatmeal, small noodles, etc.

Microwave sterilization cannot be suitable for metal products. Microwave electromagnetic waves in the microwave oven will generate induction current in electromagnetic waves, just like the antenna receiving signal of the radio TV generated by the antenna. This will cause the metal to be severely overheated.

Microwave sterilizers can usually kill bacteria at 75 ° C. The total number of bacteria at 80 to 90 ° C is greatly reduced, and the time takes only 2 to 6 minutes. Compared with traditional sterilization, sterilization speed is faster, and sterilization can be performed after packaging. Microwave sterilization can be transmitted directly to the food without heat loss, saving 30%-50%. Due to the relatively short heating time, microwave sterilization has the main advantage than the traditional sterilization cooker. Long -term high -temperature sterilization will cause the nutrition and taste of food. Microwave sterilization is compared to traditional methods to retain the activity and nutrition of materials and nutrition of materials than traditional methods. The ingredients and original flavor have a significant effect on the extended storage period. Low noise, the entire machine can operate the entire device in 2-3 square meters.

With the development of science and technology, more and more attention is being paid to energy-efficient food processing technology, microwave applications in food processing is bound to be a new technology with a broad future both at home and abroad. The development of new microwave equipment and technology to further improve the production efficiency and quality of food Safety is the goal to be pursued by microwaves.

 

Related Products：

Hot Air Oven

Steam Autoclave

Water Spray Sterilizer

Water Spray Rotary Sterilizer

Microwave Drying Machine

We recommend the best machines for the fastest return on investment. These sterilizers can handle a wide range of medium to large production scale foods. The unique flexibility and versatility ensures our customers long-term production and offers multiple possibilities for new packaging. The modular design of the machine is evolved and can be upgraded according to the particularity of the packaging.

We hope this short paper will help you determine your batch sterilizer equipment needs.

Don’t see the size for your needs?

Leave us a message to learn about your customization needs, and a team member will contact you to solve each of your sterilization needs.

We need you to leave information about the products and volumes you want to sterilize, how you want to sterilize, the volume and volume of the chambers that fit your space, etc. Our team can visit your facility, help you build throughput analysis reports, and ensure you get the best equipment for your facility needs.

About our sterilizer equipment information, please visit our website https://www.amautoclave.com/or https://www.wanrooemed.com/