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  1. 1. Food Irradiation
  2. 3. Uses of Irradiation Processing <ul><li>Insect disinfestations of food products. </li></ul><ul><li>Inhibition of sprouting in tubers, bulbs and rhizomes. </li></ul><ul><li>Delay in ripening of fruits. </li></ul><ul><li>Enhance in shelf life . </li></ul><ul><li>Elimination of pathogens and parasites in foods. </li></ul>
  3. 4. Irradiation Foods are radioactive <ul><li>Food passes through a radiation field allowing to absorb desired energy. </li></ul><ul><li>Food itself never comes in contact with the radioactive material. </li></ul>
  4. 5. Is radiation processed foods are harmful <ul><li>Radiation processing produces very little chemical changes . </li></ul><ul><li>None of the changes known to occur have been found to be harmful. </li></ul><ul><li>Emit only gamma rays and no neutrons. </li></ul>
  5. 6. Is irradiation affect Nutritive value <ul><li>Irradiation has very little effect on proteins , Carbohydrates , Fats and Minerals . </li></ul><ul><li>Vitamin A , E , C , K and B1 in foods are relatively sensitive to radiation,niacin and Vitamin D are very much stable </li></ul>
  6. 7. Benefits <ul><li>Insects ,Moulds and Bacteria can be killed. </li></ul><ul><li>Viruses cannot be killed . </li></ul>
  7. 8. Irradiation <ul><li>Only food of good hygienic quality should be used </li></ul><ul><li>Radiation Processing cannot reverse the spoilage process and make food good . </li></ul>
  8. 9. Advantage <ul><li>CODEX accepted Food Irradiation as a safe and effective technology . </li></ul><ul><li>People benefit from Food Irradiation due to reduction in bacteria . </li></ul><ul><li>> 100 food items are identified for food irradiation. </li></ul>
  9. 10. Cost of Irradiation Facility <ul><li>Cost- Rs 6-8 Crores excluding land cost. </li></ul><ul><li>Cost varies based on type of food, throughput. </li></ul>
  10. 11. Irradiation Plant <ul><li>Food Irradiation Plant is authorized by Atomic Energy Regulatory Board . </li></ul><ul><li>Facility could be private, public or joint sector company. </li></ul>
  11. 12. Irradiated Foods <ul><li>Irradiated food cannot be recognized by sight,smell,taste or touch . </li></ul><ul><li>Codex Alimentarius Commission has endorsed a green irradiation logo . </li></ul>
  12. 13. LOGO
  13. 14. Food Irradiation <ul><li>Has been approved in 40 countries. </li></ul><ul><li>US, Japan, China,France and Holland . </li></ul>
  14. 15. Food Irradiation <ul><li>Food irradiation is a process of exposing foods, either prepackaged or in bulk to very high-energy, invisible light waves (radiation ) such as gamma rays, X-rays or electron beams. </li></ul>
  15. 16. Dosage <ul><li>Dose (absorbed ): is the amount of energy absorbed per unit mass of irradiated food product. </li></ul><ul><li>Dose Limit: The minimum or maximum radiation dose absorbed by a food product prescribed in regulations . </li></ul><ul><li>(i.e., no part of the food product shall absorb less than or more than a specified amount). </li></ul>
  16. 17. Food Irradiation <ul><li>Food is exposed to doses of ionising energy. </li></ul><ul><li>Lower doses – Irradiation extends a product’s shelf life. </li></ul><ul><li>Higher doses – Kills insects,moulds, bacteria </li></ul>
  17. 18. Food Dose <ul><li>Meat - 4.5 kGy </li></ul><ul><li>Poultry - 1.5- 3 kGy </li></ul><ul><li>Grains - 0.2 – 0.5 kGy </li></ul><ul><li>Fruits & Vegetables 1 kGy </li></ul><ul><li>kGy - kilogray </li></ul>
  18. 19. Non-Irradiable foods <ul><li>Oysters and other raw shell fish </li></ul><ul><li>Eggs </li></ul>
  19. 20. Food Irradiation Process <ul><li>Facilities for Food Irradiation are similar to sterilizing medical equipment . </li></ul><ul><li>Radiation source (Cobalt-60 ) is contained in slender pencil like stainless casing . </li></ul><ul><li>Package food travels in pallets on a conveyor and exposed to the radiation source. </li></ul>
  20. 21. Irradiation Process <ul><li>Radicidation - ionizing radiation to reduce non-spore forming pathogenic bacteria. </li></ul><ul><li>Radurization - to enhance keeping quality. </li></ul><ul><li>Radappertization - to reduce activities of microorganisms (except viruses). </li></ul>
  21. 22. Success of Irradiated Food <ul><li>Camembert cheeses and Mechanically debone poultry meat is commercialized as Irradiated Food in France. </li></ul><ul><li>Irradiated henham (2 kg Gy ) fetched more prices than non-irradiated food. I </li></ul><ul><li>In Bangladesh, irradiated dried fish fetched high price than fish fumigated with pesticides (Eg.DDT). </li></ul>
  22. 23. Irradiation in Spices <ul><li>It extends the shelf life of spices in packed form retaining colour, aroma and other sensory properties . </li></ul>