As bananas ripen, they get sweeter and more flavorful as their starches turn to sugar, which makes them tastier to eat out of hand and great for sweet recipes like banana bread. They are perfect for baking when speckled with brown all over and have a strong fruity fragrance. Bananas also get softer as they ripen, and their mashability makes them ideal for treats and creamy smoothies.
But just how ripe are we talking about here? Should you be using those completely black bananas on your counter or is it safer to toss them in the compost bin instead? To find out, I checked with the experts at the U.S. Food and Drug Administration (FDA), as well as James E. Rogers, Ph.D., the Director of Food Safety Research and Testing for Consumer Reports.
Is It Safe To Eat and Cook with Black Bananas?
Good news for Team Ripe Banana: Extremely ripe bananas—even those with a completely black peel—are likely safe to eat. According to a spokesperson for the FDA, "Generally, as long as it is not visibly moldy, it is safe." Rogers concurs, saying he hasn't seen any studies linking foodborne illness to eating extremely ripe bananas.
That said, Rogers states that if your bananas are jet black and mushy, your safest bet is to cook with them rather than eating them out of hand or using them raw in things like smoothies or nice cream.
"The riper the bananas get, the more levels of bacteria could be on them," he says. Those bacteria include spoilage bacteria, which are typically not harmful, but could also be pathogenic bacteria (which can make you sick) picked up during harvesting, processing, or at the grocery store.
Fortunately, heat should kill any pathogenic bacteria that might have been lurking around and multiplying on the bananas as they ripened. "Cooking is a kill step," says Rogers.
Also, note that placing bananas in the fridge or freezer will turn them black. This is natural—bananas don't handle the cold well—and does not mean the bananas are bad. You can still eat them safely as long as they aren't moldy.
3 Signs It’s Time To Throw Away Your Bananas
If you notice any mold on your bananas, it's time to throw them away or toss them in the compost bin. The black skin itself is not mold. Mold on bananas is fuzzy white, gray, or greenish—it looks a lot like mold on bread.
If a banana smells rotten or fermented or is leaking fluid, it's time to say goodbye.
If the fruit inside, not just the peel, is black, that's a sign that your banana is too far gone to safely eat.
The Takeaway
Completely black bananas are likely safe to consume as long as there is no visible mold, a rotten smell, or the fruit inside is black. If none of these are true and your bananas are simply black, your best bet is to cook with them rather than eat them raw.
Mold on bananas is fuzzy white, gray, or greenish—it looks a lot like mold on bread. If a banana smells rotten or fermented or is leaking fluid, it's time to say goodbye. If the fruit inside, not just the peel, is black, that's a sign that your banana is too far gone to safely eat.
While it's okay if the banana peel is dark brown or even black, if the inside is too, then the fruit is beyond ripe and now on its way to rotten. Another sign that bananas have gone bad is if they start leaking any fluids. When in doubt, just toss the bananas out.
According to a spokesperson for the FDA, "Generally, as long as it is not visibly moldy, it is safe." Rogers concurs, saying he hasn't seen any studies linking foodborne illness to eating extremely ripe bananas.
The slightly sweeter taste of spotted bananas is attributed to the presence of polyphenol oxidase, an enzyme responsible for the development of dark spots. Bananas with black spots are safe for consumption and do not pose any health risks. However, exercise caution if a banana with dark spots emits a bad odour.
Digestive issues: While bananas are a great way to add fiber to your diet and keep you regular, eating too much fiber can cause digestive problems, such as upset stomach, nausea, vomiting, bloating, and gas.
Completely black bananas are likely safe to consume as long as there is no visible mold, a rotten smell, or the fruit inside is black. If none of these are true and your bananas are simply black, your best bet is to cook with them rather than eat them raw.
A banana that has turned brown because it is overripe likely won't make you sick. However, if a banana has begun to grow mold, is releasing liquid, or has an unpleasant smell, it has likely begun to rot and is no longer safe to eat.
Green Bananas Can Offer Health Benefits. Green bananas are less sweet and contain less sugar than riper yellow bananas. They also have more resistant starch, which may benefit blood sugar management and your overall health. Bananas are incredibly tasty and easy to eat.
Don't be alarmed when your frozen bananas turn brown, it's completely normal! Mash it: While an overripe banana may not look appealing, your brown bananas are at peak sweetness! At this point they're easy to mash and bake into bread, muffins, cookies, pancakes, and more. The sky's the limit!
A person with diabetes can enjoy bananas in moderation as part of a balanced diet. The vitamin, mineral, and fiber content of bananas may even offer health benefits for people with diabetes, as long as an individual does not eat excessive portions.
Bananas are safe for dogs, but moderation is key. Bananas are high in sugar, so too much of it can put your dog at risk of developing medical conditions. You should give your dog only a few thin slices of banana once in a while. At least 90% of your dog's food should be regular dog food.
A dull, grey color indicates they have been either chilled or overheated during ripening and/or storage. There is no need to be concerned if bananas appear a little greyer than usual. There is nothing wrong with the bananas and is safe to consume.
Special Precautions and Warnings. When taken by mouth: Bananas are commonly eaten as food. They're generally well-tolerated, but some people might experience bloating, gas, or cramping. There isn't enough reliable information to know if other parts of the banana plant are safe or what the side effects might be.
With all these benefits, you may be ready to start eating more bananas. But both dietitians say that it's important not to overdo it and only recommend eating one to two bananas a day.
The boiled egg provides high-quality protein and healthy fats, while the banana offers carbohydrates, vitamins, and minerals like potassium. This combination can provide a balanced mix of macronutrients, helping to keep you full and energized throughout the morning.
As bananas ripen, they have a sweeter taste and a softer texture. Yellow bananas eventually turn dark brown and become mushy. These “overripe bananas” are great for making baked goods! But be sure to grab them (and freeze them or use them) before mold forms.
Bananas are incredibly tasty and easy to eat. What's more, they're rich in many essential vitamins and minerals. Most people eat bananas when the fruit is yellow and ripe, but green unripe bananas are also safe to eat.
Just because an overripe banana looks less appealing, it doesn't mean it loses its nutrients. Overripe banana is rich in fiber and potassium, and is also a good source of antioxidants, which can help protect cells from damage, says Samreen Saniya, nutritionist, Cloudnine Group of Hospitals, Bengaluru, Old Airport Road.
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