Abstract: A method of preparing raw oyster meat in the shell is disclosed which employs a mild heat treatment followed by chilling for the destruction of harmful pathogenic bacteria such as Vibrio vulnificus. The oysters are captured and transported to the processing plant in a refrigerated state. The oysters are then cleaned and graded into categories according the product size. The oysters are then placed into a continuous flow of sterilized water at a sufficient temperature and duration to kill the pathogens yet leave the meat in a raw state within the shell. Different temperatures and time durations have been found to give excellent results depending on the size of the oyster. It has been found that the internal temperature of the oysters, that is, the meat within the shell, must reach a minimum of 49 degrees centigrade and not exceed 53 degrees centigrade for maximum efficacy. Depending on oyster weight and warm water temperature, the oysters will be immersed from between about 10-45 minutes.

Abstract: A method of preparing raw molluscan shellfish meat in the shell is disclosed which employs a mild heat treatment and cold storage for the destruction or reduction to lower levels of harmful pathogenic bacteria such as Vibrio vulnificus, Vibrio cholerae and others. The raw molluscan shellfish, such as oysters, arrives at the processing plant in a refrigerated state. The mollusks then have a band placed around them, securing them against opening. The banded mollusks are then placed in a fluid bath at a sufficient temperature and duration to kill pathogens yet leave the meat in a raw state. The mollusks are then conveyed from the heated fluid bath and placed in a cold fluid bath. The mollusks are then removed from the cold fluid bath. The natural enclosure of the mechanically banded mollusk prevents the hot or cold fluids from contacting the flesh of the mollusk. The mollusks remain in a raw state and in the shell throughout the process. The pathogenic bacteria are reduced through the action of this process.

Abstract: A method of preparing raw molluscan shellfish meat in the shell or out of the shell is disclosed which employs a mild heat treatment and cold storage for the destruction of harmful pathogenic bacteria such as Vibrio Vulnificus. The raw molluscan shellfish, such as Oysters, arrives at the processing plant in a refrigerated state. The product is then culled, cleaned and graded into categories according the product size. The product is then enveloped in a polymer or metalized film bag to isolate the product. The bagged product is then placed on a rack which is then lowered into a circulating bath of water at a sufficient temperature and duration to kill the pathogens yet leave the meat in a raw state. The rack is then removed from the heated water bath and placed in a cold water bath with a continuous flow for a time period. The rack is removed from the cold water bath. At no time did the hot or cold bath waters come in contact with the bagged mollusk (product).