Sweet potatoes are a common food in daily life. They are very delicious whether boiled, steamed or roasted. If the sweet potatoes are dark, can they still be eaten?
Can you eat sweet potatoes when they are black?
It depends on the situation.
If sweet potatoes turn black after being cut and left for a period of time, then this is because sweet potatoes contain certain polyphenols. After losing the protection of the outer skin, they will easily come into contact with oxygen in the air and undergo an oxidation reaction, thereby forming colored quinones, so blackening occurs. In this case
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If the sweet potatoes are black inside just after being cut, then it is likely caused by frostbite or the breeding of bacteria. This kind of sweet potatoes is not recommended to eat anymore.
Can sweet potatoes be eaten with black hearts?
I can't eat it.
There are generally two reasons for black heart in sweet potatoes. One of the reasons is that the storage environment temperature is too low, which causes the sweet potato pulp to suffer cold damage and the internal cells to be destroyed and oxidized, resulting in black heart. The nutrients contained in it will also be damaged, so it is recommended not to eat it.
Another reason is that sweet potatoes contain more water and sugar. When stored for too long or not properly, certain bacteria are likely to breed and cause deterioration. In this case
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What kind of sweet potatoes cannot be eaten
With black spots.
Black spots on the skin of sweet potatoes will expel toxic substances such as sweet potato ketone and sweet potato ketone. When these toxins enter the human body, they will affect the normal physiological functions of tissues and organs, disrupt the balance of intestinal flora, and cause discomfort to the body. Symptoms, such as abdominal pain, diarrhea, nausea and vomiting, dizziness and fatigue, etc., so it is not recommended to choose sweet potatoes with black spots when selecting sweet potatoes.
If you feel unwell after accidentally eating, you should drink more water, rest more, and carefully observe the changes in your body. Once the symptoms do not improve or show signs of worsening, it is recommended to go to the hospital in time to avoid delaying the treatment of the disease.
How to choose delicious sweet potatoes
1. Appearance: When selecting sweet potatoes, you should generally choose sweet potatoes with complete shape, well-proportioned shapes, large middle, small ends, no black spots, wormholes, or sprouted, and the skin of the sweet potatoes should be dark red or purple-red. Such sweet potatoes will taste better when they are boiled.
2. Odor: Fresh sweet potatoes smell very light
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