What does the term depuration mean when talking about certain seafood items?
Depuration is a process of cleansing bacteria from live shellfish and some fin fish. Mostly with clams, oysters and mussels, which are classified as "filter feeders," and recently with talipilia.
Talipilia is a bottom feeding fish and by running it through a depuration process the meat is much better tasting. The duration process consists of putting the fish and shell fish in clean water for a 48 hour period. Some seafood processors call this process "purging," which means the same thing.
At present the U.S. has eleven depuration plants. The process usually adds about 10% to the cost, however, the product is greatly improved. Oysters that have gone through the depuration process have no danger of red tide poisoning.