First, look at the pitaya skin.
Usually, if the pitaya has deteriorated, you can look at its peel. If its peel color is not bright red, but dark red, it means that this pitaya is not fresh. If there are dark brown spots on the surface of its peel, it means that the pitaya has gone bad, at least the spots are bad.
Second, look at the feel of pitaya.
If you want to know whether the pitaya has gone bad, you can also look at its feel. Normal pitaya is slightly soft and elastic. If it feels hard, it means that the pitaya is not ripe yet. If it feels too soft, it means that the pulp is close to deterioration. If you press a hole by hand, it means that the pitaya has completely deteriorated.
Third, look at the flesh of pitaya.
The pulp can also be used to judge whether the pitaya has deteriorated. You can peel it off and slide it on the surface of the pulp with your hands. If there is a small hole where you touch it, it means that the meat in this place has gone bad. In addition, the flesh of pitaya is white or red. If other colors appear on the skin, it also means that the skin has gone bad.
Fourth, eating moldy pitaya may lead to poisoning.
Pitaya is a perfect culture medium for many flora because of its high sugar content. Many fungi secrete some toxic substances during their growth. After all, a small intake of such substances may not cause symptoms. After all, the gastrointestinal tract and liver of human body have powerful sterilization and detoxification functions, but excessive consumption may lead to poisoning, abdominal pain, diarrhea and other symptoms.