Why do crisp apples become loose when left for a long time?

Because the respiration rate of apples will increase and ethylene will be released during the ripening process, the released ethylene will cause the fruits to ripen, the green tissues will turn yellow, and fibers will be formed in the tissues, which will promote the generation of some heterotrophic metabolites and reduce the quality and storage life of cut flowers, so the apples will become loose.

Storage methods for keeping apples crisp;

Keep apples dry and cool. Soak the bought apples in salt water for a while, then take them out and dry them with a towel. Put it in a fresh-keeping belt and then put it in the refrigerator.

If you need a lot of fresh-keeping, the common containers at home are cylinders, cans, jars, cartons and wooden cases, which can be used to store apples. The tanks, cans and altars used must be washed and dried, and the inner walls of the tanks, cans and altars should be wiped with white wine. You can also put half a bottle of white wine in it (the dosage can be determined according to the storage capacity), and the bottle mouth is open. After harvesting, put the apples in the shade for a few days, and then put them in pots, cans or jars in layers. Spray white wine after filling, which can range from 50- 150g depending on the storage capacity. Cover it with absorbent cotton and then cover it with a layer of plastic cloth to prevent it from emitting alcohol smell. Cover the apples when you eat them, and they can be kept for more than half a year.