These fruits need a post-ripening process.

Generally, bananas with green shoulders can be eaten in 1 to 2 days when kept at room temperature. To speed up ripening you can put them with ripe apples. If you want to store them longer, hang them up and keep them well ventilated, which will allow the ethylene produced to dissipate with the wind and slow down the aging of bananas.

Expanded:

Precautions:

Patients with gastrointestinal ulcers who often take Protonix often suffer from stomach bleeding. And bananas contain a chemical that can prevent gastric ulcers, which can stimulate the growth and reproduction of gastric mucous membrane cells, producing more mucous membrane to protect the stomach.

Because of the high starch content in bananas, they are easy to satiate the stomach, plus it takes some time for starch to be converted into sugar in the body, so they don't produce too much energy (energy food) buildup. From this point of view, bananas can be used as an excellent food preferred for weight loss.

People's Daily Online - 3 kinds of fruit must be put a few days before eating Keep in mind the 6 taboos

Baidu Encyclopedia - Banana