Using Radiation for Increased Shelf Life

Extending shelf life involves exposing food to ionising radiation, which damages the DNA of spoilage-causing bacteria, fungi, and insects. This process is highly effective against pests and pathogens resistant to traditional heat or chemical treatments. Radiation processing can penetrate deep into products, leaves no harmful residues, and does not alter the taste or quality of food. It is used for a wide range of products, including fruits, vegetables, spices, and seafood, playing a crucial role in reducing global food waste and ensuring food security.

• Gamma Irradiation: Uses gamma rays from radioactive isotopes.
• Electron Beam Irradiation: Uses accelerated electrons.
• X-ray Irradiation: Uses high-energy X-rays.

Fruit and Vegetable Preservation: Extending the shelf life of fruits and vegetables.

Spice Disinfection:Eliminating insects and bacteria from spices.

Seafood Preservation: Reducing bacterial contamination in seafood.

Meat Preservation: Extending the shelf life of meat products.

Radiological risks depend on the radiation source. Source-based gamma irradiators require secure management and cradle-to-grave oversight of radioactive isotopes. Electricity-generated systems, such as e-beam or X-ray facilities, produce prompt radiation only when active. Both require robust shielding and interlocks; notably, the food products themselves do not become radioactive.

Deployment is technology-dependent. Source-based systems involve the costs of management of sources and complex logistics for secure isotope transport. Electricity-generated systems demand high initial capital expenditure and access to a stable, high-capacity electrical grid. Both require specialised technical expertise and public education to address perceptions regarding food irradiation.

There are no proliferation risks as there is no nuclear material involved in this application.