Fresh pineapple juice is highly perishable and can spoil quickly without refrigeration. In warm or hot temperatures, it can start to ferment and become unsafe to consume within a short period. As a general rule of thumb:
- At room temperature (around 20-25°C or 68-77°F), fresh pineapple juice may remain safe to drink for about 2 to 4 hours.
However, this time frame can vary depending on factors like the initial cleanliness of the fruit, exposure to contaminants, and ambient temperature. If the temperature is higher or the juice is exposed to bacteria or other microorganisms, it can spoil even faster.
To ensure the safety and freshness of pineapple juice for a more extended period:
Refrigerate promptly: If you want to keep pineapple juice fresh, refrigerate it as soon as possible after juicing or after opening a store-bought container.
Use an airtight container: Store the juice in a clean, airtight container to prevent exposure to air and contaminants.
Consume within a few days: Refrigerated fresh pineapple juice can typically remain safe to drink for 2 to 3 days. However, its taste and quality might start to degrade after the first day.
Check for signs of spoilage: If you notice any off smells, mold growth, or unusual appearance, discard the juice immediately.
Remember, unlike commercially processed and pasteurized juices that can have a longer shelf life, fresh juices require proper handling and refrigeration to maintain their safety and quality. When in doubt, it's always best to err on the side of caution and avoid consuming fresh pineapple juice that has been left unrefrigerated for an extended period.