Bananas are a very common fruit in life. In the supermarket fruit area, yellow-colored bananas are the most popular. And there is a kind of banana with brown skin, and some dark spots, which we wouldn't buy because they think that it is a banana that has been rotted and cannot be eaten. Can a black spot on a banana skin be eaten?
How powerful is a spotted banana?
The more ripe the banana is, the more black spots on the epidermis, the higher its immune activity. So from now on to eat a little more ripe bananas! Bananas have a mild immune activation, in the human body when the health does not make the abnormal increase in immunity. However, it is very effective for the sick, the elderly and the frail and weak. If you eat a banana with a few black spots, two things happen.
The first thing: the stool becomes smooth
Everyone knows that bananas have a laxative effect, but after eating, they do not feel the obvious effect. This is due to eating bananas that are not thoroughly cooked. Unripe bananas contain tannic acid (which has the effect of astringent diarrhea), but it will increase constipation. The fully cooked banana tannins are extremely low in content, rich in dietary fiber, and promote intestinal peristalsis and fecal excretion.
Raw banana contains a lot of tannic acid, tannic acid has a very strong astringent effect, not only will not relax it will increase the constipation but the tannic acid content in ripe banana is very little, its rich dietary fiber can make Increased stool volume promotes intestinal peristalsis, especially water-soluble plant fibers, which can cause hyperosmolar secretion of gastrointestinal fluids, thereby adsorbing water to solid parts and making excretion easier to excrete.
The second thing that can help prevent cancer
Long-spotted bananas produce higher numbers of leukocytes than ordinary bananas and can enhance human immunity. Especially for patients, the elderly and the infirm, the effect is obvious. Studies have shown that speckled bananas are more effective than ordinary bananas in preventing cancer. Professor Yamazaki from the University of Tokyo, Japan, used animal experiments to compare the immune activity of bananas, grapes, and apples; watermelons, pears, and other fruits. The results showed that bananas had the best effect. They could increase the white blood cells to improve the immune system, while the black cells of the outer skin had black spots. The quantity is 5 times that of the banana you just bought! Therefore, the banana with dark skin can play a role in preventing cancer.
In addition, ripe bananas contain rare phospholipids in fruits, which have the effect of inhibiting gastric ulcers. Usually, friends with poor appetites can eat in moderation and help digestion. It needs to be emphasized here that if there are too many spots on the banana skin, the bananas have already matured and the spots will enter the flesh from the skin. Peel the banana peel, if the flesh inside also appears black, such a banana is seriously rot, can not eat again.
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