What does the water for boiling sweet potatoes do?

The water for boiling sweet potatoes contains carotene: vitamin A is called a small eye protection agent, and vitamin A is converted from carotene. Sweet potato is rich in carotene, which can provide rich vitamin A. The content of vitamin A can be as high as 40mg/ 100g of fresh sweet potato. Carotene can be converted into vitamin A after being absorbed by the human body, thus maintaining normal visual function.

The fiber content of sweet potato is 10 times of that of rice flour. It is fine in texture and does not hurt the stomach. It can accelerate the peristalsis of the digestive tract, help defecation, clean the digestive tract, shorten the retention time of toxic substances in food in the intestine and reduce human poisoning caused by constipation.

Extended data:

Precautions for eating sweet potatoes:

Sweet potatoes must be steamed before eating, because the starch particles in sweet potatoes are not destroyed by high temperature and are difficult to digest.

Sweet potato contains an oxidase, which easily produces a large amount of carbon dioxide gas in human gastrointestinal tract. Eating too much sweet potato will make people bloat, burp and fart. Sweet potato has a high sugar content. Eating too much will stimulate gastric acid secretion and make people feel heartburn. Because the stomach is stimulated by excessive gastric acid, the contraction is strengthened, and the gastric acid can flow back to the feeding tube, causing acid and water vomiting.

Sweet potato has a lot of sugar, which can't be absorbed by the body for a while, and the rest is easy to ferment in the intestine, making the abdomen uncomfortable.

Baidu encyclopedia-sweet potato

Baidu encyclopedia-carotene

Baidu encyclopedia-water