Nothing says summer quite like a juicy slice of watermelon. Especially in the US, where watermelon reigns supreme as the most popular melon.
But how long does a watermelon last uncut, and what’s the best way to store it? This article will dive into the shelf life of whole watermelons, the factors that affect how long they stay fresh, and tips for keeping them at their best.
We’ll cover everything from storing them at room temperature to refrigerating and even freezing this summertime favorite.
Selecting a Ripe Watermelon: The First Step to Longer Storage
The best way to ensure your watermelon lasts as long as possible is to pick a ripe one to start with. Here are some hints for choosing a good watermelon:
- Visual cues: Look for a large, discolored spot where the watermelon rested on the ground. If the spot is yellow or creamy, that’s a sign that the melon is ripe. Also, check for good symmetry and firmness, and avoid melons with bruises.
- The thump test: Give the watermelon a thump with your knuckles. If it sounds hollow, that means it’s likely to be ripe inside.
- The smell test: Give the melon a sniff. A sweet, pleasant aroma can be a sign of ripeness.
- Weight: A ripe watermelon should feel heavy for its size. That’s because watermelons are about 90-92% water.
Optimal Storage Conditions for Uncut Watermelons
So, you’ve got a whole watermelon. Now, where should you keep it?
Room Temperature Storage
It’s perfectly fine to keep an uncut watermelon at room temperature if you plan to eat it within a week or so. For best results, find a cool, dry spot, out of direct sunlight. At room temperature, your watermelon should last for 7-10 days.
Ideally, your watermelon should be stored at a temperature between 50-59°F, with 55°F considered just right.
Refrigeration
Putting your watermelon in the refrigerator will definitely extend its life, but there’s a tradeoff.
An uncut watermelon can last 3-4 weeks in the refrigerator. However, some experts advise against refrigerating them. They say the cold can negatively affect the flavor and texture.
Factors Affecting Storage
A watermelon’s ripeness when you buy it, as well as any temperature fluctuations it experiences, can affect how long it lasts, no matter where you store it.
The Impact of Temperature on Watermelon Quality
When storing a watermelon, temperature can play a role in quality and nutritional value.
Lycopene Content
Watermelon’s lycopene content, a powerful antioxidant, is highest when stored at room temperature. Some research suggests that refrigeration may reduce watermelon’s antioxidant and mineral content.
For example, one study showed higher lycopene levels in watermelons stored at 70°F compared to those stored at lower temperatures.
Cold Chain Considerations
If your watermelon has been refrigerated since the time it was picked, it’s best to keep it refrigerated. Maintaining a consistent temperature is crucial, because temperature fluctuations can lead to quality degradation.
Potential Drawbacks of Refrigeration
While refrigeration extends shelf life, it may come at a cost. Keeping your watermelon in the fridge may reduce the amount of antioxidants it contains. Also, the flavor, texture, and some of the nutritive value will begin to deteriorate over time.
In Conclusion
Knowing how long a watermelon lasts and the best ways to store it will help you enjoy this summer fruit at its peak. Keep an uncut watermelon at room temperature until you’re ready to slice into it.
When you’re shopping, choose ripe watermelons, store them the right way, and think about when you’re going to eat them so you don’t end up throwing any away. You can store a whole watermelon in a cool, dry spot away from direct sunlight.
If you follow these tips, you can enjoy the sweet, refreshing taste of watermelon all summer long!