 The main objective of seafood depuration is to remove fecal contamination in seafood before being sold to end consumers.Oyster depuration is useful since they are generally eaten raw and in many countries, the requirement to process is government-regulated or mandatory.The United Nations Food and Agriculture Organization (FAO) formally recognizes depuration and has published detailed documents on the process, whereas the Codex Alimentarius, encourages the application of seafood depuration.