In autumn and winter, it is time to eat sweet potatoes again. However, with the extension of storage time, sweet potatoes may sometimes develop moldy, dark, and long dark spots. Can sweet potatoes have dark spots? Some people have rumors on the Internet that if there are dark spots on sweet potatoes, they are infected with the black spot fungus and are poisonous and cannot be eaten, but there are diarrhea problems when they occur, and there may be life threats when they are heavy. is this real? Maybe you understand too much, oh~~
Can sweet potatoes have dark spots?
Not necessarily. Regarding the issue that sweet potatoes have dark spots that cannot be eaten, they cannot be generalized. Specific analysis is required for specific situations:
Long-spotted sweet potatoes attacked by black spot cannot eat
The common diseases of sweet potatoes are mainly black spot and soft rot. The skin of sweet potatoes affected by black spot has brown or black spots, or dry spots, and the potato heart becomes hard and bitter. Sweet potatoes contain heat-resistant toxins, so sweet potatoes that are eaten raw or cooked with dark spots can cause poisoning. Therefore, once the sweet potato has dark spots, hard hair, bitter taste, mildew, it will not be eaten again.
The sweet spot made by oxidizing the cracked sweet potato has no effect
If black potatoes have black spots, it does not matter if black spot attacks. Just cut off dark spots. For example, sweet potatoes harvested due to collision of the roots of the sweet potatoes after the collision, the wounds of the sweet potato, the milk contained in it easily flows out, because the milk contains a large number of polyphenols antioxidants, combined with oxygen in the air, will also form black spots, this Black spots have no adverse effects on human health, and it is better to cut off and eat again.
Sweet potato black spots after wounding did not affect
After harvesting sweet potatoes, the processing industry usually places the roots of sweet potatoes in a temperature of 29-30 degrees and a humidity of 90-95% for 4-10 days to make the cuts of the roots of the sweet potatoes cut into black plug layers, just like the human body. Skin injury will form a knot-like shape to prevent the invasion of pathogenic bacteria. This kind of treatment is called "calling" treatment, which can prolong the storage time of sweet potatoes, and will also cause dark spots on the surface of sweet potatoes after callus treatment. The formation of dark spots will not harm the human body. When you just eat, eat it again for beauty.
What happens to the sweet potato that is attacked by black spot
The toxin produced by the black spot pathogen, containing sweet potato ketone and sweet potato ketone alcohol, has a greater damage to human liver. More than 24 hours after eating, people have nausea, vomiting, diarrhea and other gastrointestinal symptoms. Severe fever, headache, wheezing, ambiguity, withdrawal, vomiting, coma, and even death.
Black Spotted Sweet Potato Infected with Dark Spots Can't Eat
Sweet potatoes have black spots that cannot be eaten even if they are cut off. The toxin produced by the black spot pathogen, which grows and reproduces inside the sweet potato, cannot be removed simply by cutting off the epidermis. Especially in the case where the dark spots produced by sweet potatoes have been distributed in more than one third, the sweet potatoes cannot be eaten anymore.
Black Spotted Sweet Potato Infected with Dark Spots
Even if the toxins excreted by the black spot pathogen have been boiled and broiled, their biological activity will not be destroyed. After eating, gastrointestinal symptoms such as nausea, vomiting, and diarrhea usually occur within 24 hours. Even severe cases can develop high fever, headaches, wheezing, vomiting, coma, and even death.
Sweet potato sprouted can eat
Unlike sweet potato long black spots, sweet potato sprouts are certainly edible. Sweet potato germination does not produce toxic substances, as long as the place of germination is cut off, it can still be eaten, but the sweet potato taste will be greatly reduced. It is recommended that everyone eat sweet potatoes as soon as possible, because the sweet potato nutrients and moisture will be a lot of loss, when eating not only bad taste, but also the nutritional value will be lost.
Precautions for eating sweet potatoes
1. Do not eat raw sweet potatoes
Sweet potatoes must be steamed and cooked, because the starch granules in sweet potatoes are difficult to digest if they are not destroyed by high temperatures. In addition, the “vaporizing enzymes†in sweet potatoes do not suffer from high temperature damage and can cause discomfort after eating.
2. Sweet potato can not eat too much
Normally, normal people can't eat sweet potatoes more than two or three times a day. Sweet potato contains an oxidase. If you eat too much sweet potato, it can make you bloat, burp, and fart. Sweet potato has a high sugar content. Eating too much produces a lot of stomach acid, which makes people feel heartburn and spit water. In particular, patients with stomach problems, stomach ulcers, and stomach acid should eat less.
3. Sweet potato can not eat on an empty stomach
Sweet potatoes contain tannins and colloids. If eaten on an empty stomach, they will stimulate the stomach wall to secrete more stomach acid, cause abdominal discomfort, and cause discomfort such as heartburn, acid reflux, and flatulence.
4. Can't eat food with sweet potatoes
Sweet potatoes cannot be eaten together with eggs, crabs, bananas, persimmons, and tomatoes. Otherwise, it will easily cause gastrointestinal bleeding or gastric ulcer, which is not conducive to human health.
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