2, sweet potato sprouting can be eaten, but if the surface of the sweet potato appeared black and brown spots, is not edible. Because that black spot is contaminated by germs. Black spot germs discharged toxins make sweet potatoes become very hard and bitter, the human liver is very toxic. This toxin is not easily destroyed even after boiling and burning. After eating, many people will be sick within twenty-four hours, nausea, vomiting, diarrhea and other symptoms.
3, sweet potatoes in the stomach acid production, so stomach ulcers and stomach acid patients should not eat. Rotten sweet potatoes (sweet potatoes with black spots) and sprouted sweet potatoes can make people poisoned, do not eat. Sweet potatoes and other root vegetables contain a lot of starch, can be processed into vermicelli to eat, but the production process will often add alum. If too much to eat will lead to aluminum accumulation in the body, is not healthy.