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Cobalt 60 sources


Products being processed





We share the best of life to ensure the highest quality and safety to your products.

Gamma and E-BEAM

The sterilization and decontamination by ionizing energy are simple, effective methods. Products are exposed to a certain amount of energy generated by the electron accelerator, or by Cobalt 60 sources (depending on the product to be treated). The energy breaks the micro-organisms DNA chain, killing them or rendering them incapable of reproducing themselves.

The choice of method will be made by our team of experts according to the specificities of each client and product. After this assessment, products are treated in environment specially prepared for the procedure. The entire process is performed on products in their final packaging, removing the manipulation step. As surreal as it looks, this is technology to the service of quality and safety for the industry and their clients.


What is ionizing sterilization?

It is the sterilizing process that employs a source of energy capable of ionizing the atoms in the molecules that constitute materials.

How does the ionizing energy works on the sterilization process and microbial load reduction?

The ionizing radiation breaks the microorganisms DNA chain, killing them or rendering them incapable of reproducing themselves.

Do the treated products become radioactive?

No, they don’t. The ionizing radiation generated by the gamma ray, X ray and 10 MeV accelerators don’t make the product radioactive.

In which case is gamma technology indicated?

The process can be used to disinfect, decontaminate or sterilize different types of products in order to improve the safety of the treated product. It is also useful to improve the physicochemical and mechanical propertiesof certainmaterials. There are no restrictions to itsapplication, but tests should be carried out in order to establish the correct dosage of energy to be applied to the product that is going to be processed. Due to its high penetration capacity, this technology is indicated for products from low to high density, allowing them to be treated inside their final packaging, no matter the number of package layers or the packaging geometry.

How does the E-BEAM technology work, and in what situation is it indicated?

The radiation process by E-BEAM, exposes the products to beams of accelerated electrons with high energy. The electrons lay downtheir energy on the products, causing the “molecule ionization”, essential to achievethe expected result. The process can be used to disinfect, decontaminate or sterilize different types of products in order to improve the safety of the treated product. Another very important application of electron beams is material modification, as the reticulation reaction in polymers. The technology is more suitedfor processing products with low density.However, its suitability for products with other properties has also been demonstrated.

Which are the types of microorganisms and in which stages of their development are this technologies effective?

The technologies are effective for all kinds of microand macroorganisms(insects) in anystage of development. Some microorganisms are more sensitive than others, and for this reason, tests should be carried out to obtain the correct energy dosage.

What is a ionizing radiation dose?

It is the amount of energy absorbed by the product being treated by ionizing radiation. The measurement unit is the KGy (Kilogray), which is determined by the time the product is exposed to the ionizing radiation.

Which are the criteria for defining the sterilization dose for both methods?

The definition of sterilization dosage for both technologies is based on two criteria:

  1. The information about initial microbial load for the product, i. e., the initial contamination
  2. The expected result in terms of reduction of microbial load or sterility.
What is the ideal temperature for carrying out the process? Can frozen, chilled, orthermosensitiveproducts be treated?

The processes normally don’t result in high temperature changes. The temperature variation during the processis around 3ºC. All products can be treated normally. In the gamma ray process, there is no restriction.

Does the process generate any radioactive residues?

No radioactive residues are generated during the process.

Does the process require that treated products be put into quarantine?

No, it does not. The products can be used immediately after processing.

Can the product be treated inside its final packaging?

Yes. There are no package related restrictions.

Can processes be validated?

Yes. ISO 11137 is recommended.

Which are the agencies that support our technologies?
  • International Atomic Energy Agency (IAEA)
  • Food and Agriculture Organization of the United Nations (FAO)
  • World Health Organization (WHO)
  • Food and Drug Administration (FDA)
  • U.S. Department of Agriculture (USDA)

Any questions? Ask CBE


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