Why do bananas turn black? Can bananas be eaten when they turn black?

Z0z banana is a very popular tropical fruit. It not only has high nutritional content, but also has a sweet taste and affordable price. Many people love it. Of course, the way to eat bananas is also very rich, and good edible effects are also very beneficial to the human body, but a careful friend may find that the bananas that are bought can easily turn black within a few days. So why does the banana turn black? Can bananas be eaten when they turn black? Let's get to know it together.

Why do bananas turn black? Z9z

The blackening of bananas is mainly a manifestation of anthracnose. Its main feature is that the bananas grow dark brown black spots. These black spots will gradually expand and merge, making the whole banana peel and even the flesh black and rotten. In addition, another reason for the blackening of bananas is that the cells of the banana peel are rich in phenols and polyphenol oxidase. When the banana skin is damaged, the cells will be destroyed. At this time, under normal circumstances, the phenolic substances and polyphenol oxidase separated in different areas of the cell will "meet". Under the catalysis of the polyphenol oxidase, the phenolic substances will react with oxygen to produce hydroxyquinone and then polymerize to form adjacent Hydroquinone type melanin.

Can bananas be eaten when they turn black?

In fact, the blackening of the banana peel does not affect the banana pulp. As long as the pulp is not blackened and is not exposed to the air, it is completely edible after peeling. Moreover, bananas with darkened skins indicate that they are well-ripe. When the sugar content is the most, the taste is softer and sweeter. Studies have shown that the number of white blood cells produced in the body after the banana is blackened when the skin is blackened is nearly 5 times that of when it was first bought. Therefore, the blackened skin of the banana is more anti-cancer effect than the freshly ripe banana.

How to store bananas so that they will not turn black? The most convenient way to store

is to buy less each time and buy as much as you eat. Note that bananas should not be stored in the refrigerator, because the storage of fruits and vegetables in the refrigerator is generally about 4 degrees Celsius, up to 8 degrees Celsius, which does not meet the temperature requirements for banana storage. Bananas are easy to be frozen and will turn black after one day. Therefore, it is best to store at room temperature.

In addition, if the banana is very mature and cannot be eaten in a short time, you can remove the skin, put it in a fresh-keeping bag, and store it in the freezer. It can also be used to make milkshakes, cakes, bread, ice cream, yogurt and other foods, which are all good choices.

Many people think that bananas cannot be eaten when they turn black. In fact, this is a one-sided idea. The key point is to find out why bananas turn black. Of course, if you want to keep the flavor and taste of bananas longer, you must also pay attention to the correct storage method.