Select your language

Sterilization technology in food service

Esterilización alimentos

Innovations in refrigeration to keep food safe and healthy.

By Bob Yang*

What's your favorite food? Fish? Meat? Vegetable? And you like it fresh, right? If we put it in the refrigerator for a few days without any protection, what do you think will happen? Will it still be fresh enough when we go to consume it?

In the food service sector, keeping food always fresh is the fundamental goal, and many methods are being tested to achieve this. Refrigerators are closed environments and some bacteria are not afraid of the cold. In the typical temperature range of 4ºC to 8ºC in refrigerators, most bacteria grow slowly; however, some bacteria are not afraid of the cold, such as yersinia and listeria. These bacteria can grow quickly at these refrigerator temperatures, and if at the same time there are other foods rotting in the refrigerator, the situation will be worse, the bacteria will spread even faster, even at a rate of millions per day.

- Publicidad -

So what's the solution? Not storing food overnight is one way, but that means throwing away the remaining food at the end of the day, a huge waste and an additional cost, as customers would have to pay more for fresh food. In addition, the food that is thrown away also spreads bacteria and is not friendly to the environment. Another solution is to seal food: this can slow down the rate at which bacteria spread. The same goes for freezing. However, here we will look at another technology used in the food service industry to keep food fresh.

Ion technology
This is called positive and negative ion sterilization technology. It generates a large number of positive and negative ions through the ionized air, which adhere to the surface of the bacteria and when neutralized with each other release a large amount of energy, changing the structure of the bacteria and killing them effectively. In particular, bactericidal technology uses air as a means of propagation, thus sterilizing the entire room.

Another problem is odors. When food is stored inside a refrigerator for a long time it rots and gives off bad odors. Food rots due to enzymes; Both animal and plant-based foods contain a certain amount of enzymes and, under the right conditions, these enzymes cause the breakdown of proteins, fats and sugars in food, producing ammonia and other unpleasant gases and toxic substances, and as a consequence, thus spoiling food.

Positive and negative ion sterilization technology can efficiently break down TVOCs (Total Volatile Organic Compounds) and other gaseous volatile organic components such as formaldehyde, benzene or ammonia, thus eliminating odors.

The high-voltage negative electric field generated by this device is stronger than the high-voltage positive electric field, so the number of negative ions generated is always greater than that of positive ions. After neutralization, there is still an excess of anions in the air, which can help remove dust, smoke and odors, improving air quality.

Not only in refrigerators, ice factories also use sterilization technology. In fact, bacteria also grow on ice! In the ice making industry, the preferred solution is ultraviolet light, to keep the ice clean during storage. There are two trends on the market now, one is to sterilize bacteria by air and the other by water. Ice does not rot, however, bacteria and viruses can accumulate both in the cooling system and in the storage vessel, which makes the ice unhealthy and therefore it is necessary to sterilize the air in the storage vessel and also directly sterilize the water in the cooling system.

- Publicidad -

This method involves using a powerful ultraviolet light bulb to create a highly reactive enriched oxygen mixture. This mixture has very high oxidation properties, which can destroy viruses and bacteria and prevent the growth of mold, mildew, silt and odors. The reactive oxygen mixture is produced continuously, flowing throughout the unit at all times, thus keeping the ice machine and the entire unit perfectly clean and free of bacteria and viruses.

My opinion is that, over time, more and more high-tech solutions will be used in food service. For example, with carbon emissions becoming a global issue, more and more industries are concerned about saving energy, so inverter technology is becoming increasingly popular.

As for sterilization and deodorization technologies, these aim to ensure good sanitation in the unit, which makes them an important element for our health and therefore it will be more common to see them in refrigerators in the future. We all know that technology changes lives, so let's hope for more new technologies to improve our lives.

* Bob Yang, Application Specialist Food Service at Carel Electronic (Suzhou).

Duván Chaverra Agudelo
Duván Chaverra AgudeloEmail: [email protected]
Jefe Editorial de las revistas AVI Latinoamérica, ACR Latinoamérica, Ventas de Seguridad, Zona de Pinturas, Aftermarket Internation, Gerencia de Edificios, TV y Video, y Director Académico en Latin Press, Inc,.
Comunicador Social y Periodista con experiencia de más de 18 años en medios de comunicación. Apasionado por la tecnología y por esta industria.

No comments

• If you're already registered, please log in first. Your email will not be published.

Leave your comment

In reply to Some User
Mirage and Conalep Navojoa promote the training of refrigeration and air conditioning technicians

Mirage and Conalep Navojoa promote the training of refrigeration and air conditioning technicians

Mexico. Mirage announced a strategic alliance with the Plantel Conalep Sonora Navojoa to strengthen the training of new technicians in the sector.

New commitment to thermoacoustics for more efficient heat pumps

New commitment to thermoacoustics for more efficient heat pumps

United States. Copeland has invested in BlueHeart Energy, a Dutch startup developing thermoacoustic technology for more efficient and sustainable heat pumps.

Reliable Controls Appoints Sean Roukey as Business Development Executive

Reliable Controls Appoints Sean Roukey as Business Development Executive

International. Reliable Controls has appointed Sean Roukey as its new Business Development Executive for the Northeast United States.

KNX LATAM revolutionizes automation in Latin America with the Virtual Building Automation Days

KNX LATAM revolutionizes automation in Latin America with the Virtual Building Automation Days

Chile. Next Thursday, April 10th, KNX Latin America will hold the Virtual Building Automation Days, registration is free of charge.

GreenYellow and La Fazenda inaugurate a sustainable refrigeration system

GreenYellow and La Fazenda inaugurate a sustainable refrigeration system

Colombia. A new energy-efficient refrigeration system was installed at the La Fazenda refrigeration plant in Puerto Gaitán, Meta.

Officine Mario Dorin announces ambitious expansion plan at its Florence headquarters

Officine Mario Dorin announces ambitious expansion plan at its Florence headquarters

International. Officine Mario Dorin, a refrigeration company, has announced a major expansion plan at its headquarters in Florence, Italy.

Copeland expands its presence in Latin America with a new office in Chile

Copeland expands its presence in Latin America with a new office in Chile

Chile. As part of its regional growth strategy, Copeland has opened a new office in Santiago, Chile, strengthening its presence in the HVACR market.

Environment and UNDP recognize ten women for their contribution to the protection of the ozone layer

Environment and UNDP recognize ten women for their contribution to the protection of the ozone layer

Dominican Republic. Within the framework of International Women's Day, the Ministry of Environment and Natural Resources and the United Nations Development Program (UNDP) highlighted the work of ten...

Register for the Building Automation Webinar: Keys to Understanding Modbus and BACnet

Register for the Building Automation Webinar: Keys to Understanding Modbus and BACnet

International.  On March 27, 2025, ACR Latin America will offer a webinar focused on building automation protocols, with an emphasis on understanding Modbus and BACnet.

Scientists develop the first elastocaloric air conditioner on a commercial scale

Scientists develop the first elastocaloric air conditioner on a commercial scale

International. Researchers at the Hong Kong University of Science and Technology (HKUST) have developed the first elastocaloric air conditioning system with cooling capacity on a commercial scale.

Free Subscription
Remember Me
SUBSCRIBE TO OUR NEWSLETTER
DO YOU NEED A SERVICE OR PRODUCT QUOTE?
LASTEST INTERVIEWS
SITE SPONSORS










LASTEST NEWSLETTER
Ultimo Info-Boletin