A green radura symbol on a food label signifies that the product has undergone which process?

The green radura symbol on a food label indicates that the product has undergone irradiation. This symbol is specifically used to denote foods that have been treated with ionizing radiation to kill bacteria, parasites, and other pathogens, as well as to prolong shelf life or slow down ripening. The irradiation process exposes the food to controlled amounts of radiation, effectively reducing the risk of foodborne illnesses without significantly affecting the nutritional value or taste of the product.

It's important to note that other processes like lyophilization (freeze-drying), sterilization (extensive heat treatment to kill all microorganisms), and pasteurization (heat treatment to kill pathogenic bacteria but not all microorganisms) have their specific symbols or labels but do not use the radura symbol. Thus, recognizing the radura symbol is vital for consumers looking for irradiated products in the food market.