Yes, it is generally recommended to refrigerate pineapple juice to maintain its quality and prevent spoilage. Pineapple juice, like other fruit juices, contains natural sugars that can support the growth of bacteria if left at room temperature for too long.
If you freshly squeeze pineapple juice, it will not last as long as juice that is pasteurized or bought from the store. This is because the natural enzymes and sugars found in the juice can cause it to spoil faster. It is best to consume the juice within two days and store it in an airtight container in the fridge.
Freshly made juices (including cold-pressed juices that are made using a hydraulic press that extracts the juice from fruits and vegetables without heat) need to be refrigerated because they don’t go through the pasteurization process. Pasteurization requires heating the juice to high temperatures to kill bacteria, which can also weaken the beneficial nutrients and enzymes
In contrast, freshly made juices that doesn't involve high heat is a way to preserve more nutrients and enzymes than other methods, and must be kept refrigerated at temperatures below 39 °F.
How Long Does Pineapple Juice Last?
Store bought pineapple juice that's been consistently refrigerated will last 7 to 10 days after opening. You can preserve pineapple juice by freezing it if you need to keep it longer than 7 to 10 days.
Cold-pressed pineapple juice will last 4 to 5 days when refrigerated. You can preserve your freshly produced pineapple juice by freezing it if you need to keep it longer than 4 to 5 days. However, make sure to let it thaw out completely before consuming it to prevent a diluted flavor, as the water melts at a faster rate than the vitamins.
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