Exact Answer: Up to 4 days
The canned tuna would last for around 4 days if stored in a dry and cool place. Everyone should check with the storage instructions if provided by the manufacturer. The canned products are always at their best quality if they are kept away from sunlight and bacterial exposure.
Summary
The opened canned tuna would not last for more than 4 to 7 days in the fridge. The sealed canned tuna would last for years if stored in the fridge. The location of the place and environmental factors would affect the lasting time of canned tuna. The type of brands would also influence the lasting time of canned tuna.
How Long Does Canned Tuna Last?
| Canned Tuna | Time |
| In days | 4 days |
| In hours | 96 hours |
The canned tuna would last longer inside the fridge as compared to room temperature. In-room temperature, bacteria, and viruses can easily affect the quality of canned tuna. Room temperature is not a safe place for keeping canned products for more than 2 to 3 hours.
Everyone should make sure to not open the canned tuna if they have kept the canned tuna at room temperature. In summers, the canned tuna would not last for more than 1 hour at room temperature if the seal is opened. In winters, the canned tuna would not last for more than 2 to 4 hours at room temperature if the seal is opened.
People should try to keep the canned tuna inside the freezer if they want to store it for months. Everyone should avoid keeping the canned tuna in the doors of the fridge where temperature fluctuation happens very often. The middle section of the fridge is the best place for storing the opened canned tuna for 3 to 7 days.
The brands of canned tuna would play a huge role in predicting how long they can stay fresh in different temperatures. All the canned tuna are prepared with the help of the canning process. The hygiene during the canning of tuna would influence the lasting time of canned tuna.
If the tuna is canned with people’s hygiene, then it would last for one week at a cool temperature. For best results and to avoid the risk of spoilage, everyone can put the canned tuna inside the freezer. In the freezer, the temperature fluctuation would be almost zero.
No temperature fluctuations mean constant temperature that would allow the canned tuna to last for many months without any molds or bad smell.
Why Does Canned Tuna Last This Long?
Sometimes, the canned tuna would not last long due to rusting and leaking of the cans. Everyone should check the can properly before purchasing it from the store. The cans should be properly sealed and should not have any sign of rusting. The canned tuna contains some liquid such as pickled sauce, olive oil, and Catalan sauce.
These liquids may cause the tuna inside the cans to spoil faster if they are not stored in dry places. Moisture would increase the bacteria growth in the canned tuna. Therefore, people should avoid storing canned tuna in wet or moisture-rich places. The sterilization process ensures that the canned tuna has no pathogens.
In some cases, few pathogens may be found in the canned tuna due to improper sterilization process. Therefore people should not compromise on purchasing top-quality canned tuna.
The premium or top-quality canned tuna would last for around 7 days inside the fridge whereas the low-quality canned tuna would stay fresh for around 2 to 3 days. If the closing of the cans is not done properly by the manufacturing companies, then it would call for pathogen growth.
There are different types of canned tuna available in the market with different types of liquid. The shelf life of all the varieties of canned tuna would vary depending on the type of liquid it has inside the can.
Conclusion
The canned tuna would last longer if they are kept away from oxygen, ultraviolet rays, heat, and pathogens. The canned tuna would show spoilage symptoms such as bad smell, molds, change in texture, and discoloration if they are expired. People should avoid eating expired tuna as it would cause foodborne illness.
Everyone should try not to open the canned tuna if they are not going to use it within a few days.
References
- https://www.sciencedirect.com/science/article/pii/S0308814604007460
- https://www.sciencedirect.com/science/article/pii/S0308814609006499
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