Sweet potatoes can no longer be eaten if they are sprouted.

Sweet potato sprouting at the same time the epidermis was brown or black spots, this is because of the black spot bacteria contamination caused by the black spot bacteria discharged toxins, containing cassava ketone and cassava ketone alcohol, so that the sweet potato hardened and bitter, the human liver has a very toxic. Although boiled and roasted, its biological activity will not be destroyed, such sweet potatoes can not be eaten.

Expanded information:

Sweet potatoes must be steamed and boiled through before eating, because the starch granules in the sweet potato are difficult to digest without being destroyed by high temperatures.

Sweet potatoes contain an oxidizing enzyme, which easily produces a large amount of carbon dioxide gas in the human gastrointestinal tract, such as sweet potatoes eaten too much, will make people bloating, erosion, fart. Sweet potato sugar content is high, eat more can stimulate the secretion of large amounts of gastric acid, make people feel "heartburn". The stomach is stimulated by excess acid and contraction to strengthen the stomach acid can flow back into the esophagus, the occurrence of spit acid water.

Additionally, sweet potatoes have a lot of sugar, the body can't finish absorbing it for a while, and the remaining part stays in the intestines and is easy to ferment, making the abdomen uncomfortable. Chinese medicine believes that dampness obstructs the spleen and stomach, stagnant gas and food accumulation should be cautious of eating sweet potatoes.

The shortcoming of sweet potatoes is the lack of protein and fat, but today people are living in affluence, no longer take sweet potatoes as a staple food, and its lack of nutrients can be completely supplemented by other meals.

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