Can banana spots still be eaten?Simple 3 tricks to prevent black spots!

Banana is sweet and glutinous, easy to carry, easy to digest, and can supplement energy in time in time. It can be eaten without cleaning. It is loved by everyone.

The banana I just bought looks golden and seductive, but small black spots will slowly appear in bananas for a few days. Why do bananas make black and long black spots?Can this banana skin long black spots be eaten?


Why does banana grow spots?

There are two main reasons for the long spots on bananas or the skin of banana.

① Natural oxidation of banana peel

This is related to the oxide oxide in banana epidermal cells.

Usually, the cell membrane is tightly wrapped in carbon dioxide, and once it has been put for a long time, it is bruised or frozen at low temperature, the cell membrane will shrink and crack.There are some spots.

② Banana "sick" (anthracnose)

If the banana peel produces a slightly sunken round or oval black spots, and there is mucus near the spots, such bananas may suffer from "anthracnose".

Anthrax is caused by banana spines and belongs to a fungal disease.However, this germs do not infect the human body with human beings.


Can you eat black spotted bananas?

① The black spots that have just appeared at the beginning are a sign of a better flavor and sweetness of bananas, and it does not affect consumption. At this time, it should be eaten as soon as possible.

② If the banana peel is black and there are cracks, the flesh inside after peeling is also darkened.

③ The two ends of the banana have white or gray -green fungus, and this kind of mold is thrown away.Even if the flesh looks intact, there will be mold pollution.


Several tricks of banana freshness

① Storage of room temperature at 13 ° C

Bananas are poorly adaptable to low temperature. It is easy to "frostbite" in the refrigerator. It is also recommended to put it indoors.At a temperature stored at 13 ° C, the maturity speed becomes slow.

② Wrapped with banana root stems

If you want to extend the saving time of bananas, you can wrap the root stem of the banana with plastic wrap.The principle is very simple. The ethylene gas released by bananas can accelerate the maturity of bananas, and most of the ethylene gases are derived from the root stem of the banana. After wrapping, the banana maturity process can be slowed down.

③ Hanging bananas

Hang up the banana and put it in a cool and dry place to keep the ventilation well, which can let the generated ethylene passed away, thereby delaying the maturity of bananas.


The benefits of eating bananas can be harvested

1 Prevent cardiovascular and cerebrovascular diseases

Bananas contain a large amount of potassium. Studies have shown that intake of potassium is related to reducing blood pressure and reducing the risk of stroke, because potassium can help discharge excess sodium from urine and reduce potential damage to the heart.In addition, the potassium is enough to keep the nerve muscle excitement within the normal range and keep blood pressure stable.

So eating bananas appropriately can protect cardiovascular.

2 Get away from fatigue and become happy

The magnesium content in bananas reaches 14.60-40.70 mg/100 grams, while magnesium has the effect of eliminating fatigue;

In addition, the savage acid contained in bananas itself can be converted into 5-hydroxyline, which is a kind of inhibitory neurotransmitter. After intake, the body will make the body quiet, promote calmness, and reduce pessimism.

Not only that, the banana itself is rich in sugar -containing substances. After entering the body, it can be quickly converted into glucose and absorbed by the human body.mood.

3 Protect the stomach

① Help defecation.Banana contains more water -soluble dietary fiber, which can promote gastrointestinal motility and alleviate the symptoms of dry stools and help relieve constipation.

However, it should be noted that only mature bananas have the effect of alleviating constipation. If the banana is not familiar with it, it tastes "astringent", and the tannic acid will increase constipation.

② Prevent gastric ulcers.Banana contains protease inhibitors, which helps eliminate bacteria that may cause gastric ulcers. In addition, 5-hydroxylidin can soothe the stimulation of gastric mucosa, promote the repair of gastric mucosa, and prevent ulcers.

4 Improve your brain

A study with 200 students in the UK found that eating bananas such as bananas and other high potassium -containing fruits can help improve students’ attention and improve learning efficiency and achievements.

In addition, bananas are also rich in phosphorus called "salt of wisdom", which can make us energetic and creative.

Therefore, students and mental workers can eat bananas every day.

5 Reduce eye disease

Bananas are rich in carotene, which can be converted into vitamin A through human liver, which is particularly good for eye health.

A study published by the American "Magazine of Agriculture and Food Chemistry" found that eating a banana every day can improve eye health, reduce eye diseases, and reduce the risk of blindness.

However, it should be noted that although bananas are good, they have high blood sugar; people such as edema, patients with kidney disease, and hyperkalemia are not suitable for eating, even if the healthy people can 1-2 every day.

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