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The Australian Seafood CRC Oyster Refrigeration Index is a predictive model that estimates the growth and survival of V. parahaemolyticus and total viable count (TVC) bacteria in Pacific oysters (Crassostrea gigas).

Temperature is a key factor for controlling V. parahaemolyticus growth and this tool helps oyster companies design and monitor supply chains to maximise both oyster safety and quality. The Oyster Refrigeration Index can be especially useful for companies that have long supply chains and those exporting to countries that have maximum V. parahaemolyticus and TVC limits.

The model predictions were field-tested with Pacific oysters which contained natural populations of V. parahaemolyticus. The tests demonstrated that the model provided "fail-safe" predictions for V. parahaemolyticus growth in Pacific oysters over a temperature range of 4 to 30°C.

After registering, you can access both a web-based and Excel® downloadable version of the V. parahaemolyticus and TVC models.

We hope you find this tool useful. If you have technical questions or wish to provide us with feedback, please see the “Contact us” link below.

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