Depuration dynamics of oysters (Crassostrea gigas) artificially contaminated by Salmonella enterica serovar Typhimurium
| Autor: | Jonas D. Albarnaz, Adriano Luiz Teixeira, Célia Regina Monte Barardi, Carlos Rogério Poli, Cláudia Maria Oliveira Simões, Adriana de Abreu Corrêa, Vanessa Moresco |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Electrophoresis
Salmonella typhimurium Oyster animal structures Ultraviolet Rays Microorganism Food Contamination Aquaculture Aquatic Science Oceanography Polymerase Chain Reaction Microbiology 03 medical and health sciences biology.animal Animals 14. Life underwater Food science 030304 developmental biology DNA Primers Shellfish 0303 health sciences Analysis of Variance biology 030306 microbiology General Medicine Contamination biology.organism_classification Bivalvia Pollution Ostreidae 6. Clean water Salmonella enterica Crassostrea Chlorine Bacteria Brazil |
| Zdroj: | Marine environmental research. 63(5) |
| ISSN: | 0141-1136 |
| Popis: | The State of Santa Catarina produces the greatest quantity of edible mollusks in Brazil. To guarantee sanitary qualify, mollusk cultures should be monitored for contamination by pathogenic microorganisms. A self-purification or "depuration" system that eliminates Salmonella enterica serovar Typhimurium contamination from oysters has been developed and evaluated. The depuration process occurred within a closed system, in which 1000 L of water was recirculated for 24 h. The water was sterilized with ultraviolet (UV) light, chlorine, or both together. Oysters (Crassostrea gigas) artificially contaminated with S. typhimurium were harvested every 6 h. Samples of oyster tissue were excised and both the presence and numbers of bacteria were determined. Combined UV light and chlorine treatments resulted in total elimination of bacteria within 12 h. Polymerase chain reaction detected bacteria in water exposed to the three treatments. This pioneering study is the first of its kind in Brazil and represents a major contribution to commercial mollusk culture in this country. |
| Databáze: | OpenAIRE |
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