Purple sweet potato, also known as black sweet potato, is the root of purple sweet potato in convolvulaceae, which is mainly divided into mountain purple, American purple sweet potato and German purple sweet potato. The main nutrients are protein, amino acids, vitamins, iron, selenium, cellulose, anthocyanins and so on.

Edible efficacy: Purple sweet potato is rich in selenium and anthocyanin, which has the functions of preventing hypertension and relieving liver dysfunction, and also has a good anti-cancer effect. Among them, anthocyanin is the most direct, effective and safest free radical scavenger to prevent and treat diseases and maintain human health, and its free radical scavenging ability is 20 times that of vitamin C and 50 times that of vitamin E.

Diet should be taboo:

1. Purple sweet potato contains oxidase, which is easy to produce gas. Eating too much will lead to bloating, burping and farting.

2. Purple sweet potato has a high sugar content. Eating too much will stimulate gastric acid secretion and make people feel heartburn.

3. Dampness blocks the spleen and stomach, and those with qi stagnation and food stagnation should eat carefully.

Dietetic doctor:

1. Iron supplementation to prevent anemia.

Equal amount of purple potato and pumpkin. Peel the pumpkin, remove the seeds and cut it into small pieces. Peel the purple potato and cut it into small pieces. Then put the pumpkin and purple potato into the soup pot, add appropriate amount of water, and simmer slowly. When you see that pumpkin and purple potato are sticky, add a little rock sugar or brown sugar until it melts. Served with meals.

2. beauty beauty, moisten intestines and detoxify.

Choose a purple potato, purple rice, tremella, a few red dates and a little osmanthus. Wash the purple rice and soak it in cold water for 2 hours. Remove the core from the red dates, peel the purple potatoes and cut into small pieces. Then pour the purple rice into the casserole and add water to boil the rice and purple potato. Turn off the heat after the pot boils until it is soft and cooked. Add osmanthus fragrans and red dates and cook for 2 minutes. Served with meals.