Purple Sweet Potato

Purple sweet potatoes are also called black sweet potatoes. The flesh of the potatoes is purple to dark purple. In addition to the nutrients of ordinary sweet potatoes, they are also rich in selenium and anthocyanins. In recent years, purple sweet potatoes have been very popular in the international and domestic markets, and their development prospects are very broad.

Morphological characteristics

Purple Sweet Potato King is a variety introduced from Japan. In addition to starch, protein and fat, it is rich in vitamin A, vitamin B2, carotene, vitamin C, methyl anthocyanin, chlorogenic acid and minerals such as calcium, phosphorus and iron, as well as a certain amount of cellulose. Purple sweet potatoes are rich in selenium and have strong antioxidant effects. The anthocyanin and chlorogenic acid in purple sweet potatoes can inhibit the production of carcinogenic substances and reduce gene mutations. Purple sweet potatoes can also reduce serum transaminase and have a good preventive effect on cardiovascular diseases such as hypertension. Purple sweet potatoes also contain mucosal proteins, which have anti-cancer effects. Therefore, purple sweet potatoes have high nutritional value and strong health care functions.

Nutritional value of purple sweet potatoes

In addition to the nutrients of ordinary sweet potatoes, it is also rich in selenium and anthocyanins. Purple sweet potatoes are rich in nutrients and have special health functions. They contain about 20% protein, including 18 kinds of amino acids, which are easily digested and absorbed by the human body, including 8 kinds of vitamins such as vitamin C, B, and A, and more than 10 kinds of mineral elements such as phosphorus and iron. They contain a large amount of anthocyanins with high medicinal value. French scientist Dr. Masquel discovered that anthocyanins are natural and powerful free radical scavengers.

Anthocyanins have preventive and therapeutic effects on more than 100 diseases and are known as the seventh essential nutrient after water, protein, fat, carbohydrates, vitamins and minerals.

Purple sweet potato has a high cellulose content. This substance can increase the volume of stool, promote gastrointestinal peristalsis, clean up the mucus, gas and corruption in the intestinal cavity, excrete toxic substances and carcinogens in the stool, keep the stool smooth, improve the digestive tract environment, and prevent the occurrence of gastrointestinal diseases. Zinc, iron, copper, manganese, calcium and selenium in purple sweet potato are all natural, and the iron and calcium content is particularly high. Selenium and iron are necessary elements for the human body to resist fatigue, anti-aging and blood tonic, and have good health care functions. Selenium is also the "king of anti-cancer", which is easily absorbed by the human body and effectively remains in the serum, repairs the myocardium, enhances the body's immunity, removes free radicals that produce cancer in the body, inhibits the synthesis of DNA in cancer cells and the division and growth of cancer cells, and prevents the occurrence of diseases such as gastric cancer and liver cancer.

The efficacy and function of purple sweet potato

1. Prevent constipation

Purple sweet potatoes contain a very high content of cellulose, which can increase the volume of feces, promote gastrointestinal motility, clear out mucus, gas and decayed matter retained in the intestines, and excrete toxic substances and carcinogens in the feces, thereby maintaining smooth bowel movements, improving the digestive tract environment, and preventing the occurrence of gastrointestinal diseases.

2. Lose weight

Purple sweet potato stem tip leaves are rich in vitamins, proteins, trace elements, edible fiber and soluble non-oxidizing substances. Regular consumption of purple sweet potatoes has many benefits such as weight loss, bodybuilding, fitness and cancer prevention. Therefore, purple sweet potatoes, from stem tip leaves to tubers, have good health benefits. It is the first recommended health food among the current green, pollution-free and organic foods.

3. Antioxidant Effect

The experiment was conducted on 21 kinds of alcohol extracts extracted from sweet potato flesh. The results showed that the anthocyanins contained in purple sweet potatoes have the strongest ability to scavenge peroxide free radicals, and this ability increases with the increase of total phenol content in purple sweet potatoes. At the same time, the anthocyanins in purple sweet potatoes can also effectively prevent lipid peroxidation caused by linoleic acid auto-oxidation.

4. Cancer prevention and treatment

Purple sweet potatoes are also rich in protein, 18 kinds of amino acids necessary for the human body, 8 kinds of vitamins such as vitamin A, B, C, and more than 10 kinds of natural minerals such as phosphorus and iron. Among them, the content of iron and selenium is the most abundant. Selenium and iron are necessary elements for the human body to resist fatigue, anti-aging, and replenish blood. In particular, selenium is called the "king of anti-cancer", and this element is very easy to be digested and absorbed by the human body. It can stay in the serum, repair the myocardium, enhance the body's immunity, remove free radicals in the body, inhibit the division and growth of cancer cells, and prevent the occurrence of cancers such as gastric cancer and liver cancer.

5. Prevent cardiovascular and cerebrovascular diseases

Sweet potatoes are rich in potassium, carotene, folic acid, vitamin C and vitamin B6, all of which help prevent cardiovascular and cerebrovascular diseases. Potassium helps balance the body's cellular fluid and electrolytes, and maintains normal blood pressure and heart function. Carotene and vitamin C have the effects of resisting lipid oxidation and preventing atherosclerosis. Supplementing with an appropriate amount of folic acid and vitamin B6 helps lower the level of homocysteine ​​in the blood, which can damage arteries and is one of the independent risk factors for cardiovascular disease.

Medicinal value of purple sweet potato

In addition to the nutrients of ordinary sweet potatoes, purple sweet potatoes are also rich in selenium and anthocyanins. Purple sweet potatoes are rich in nutrients and have special health functions. They contain about 20% protein, including 18 kinds of amino acids, which are easily digested and absorbed by the human body, including 8 kinds of vitamins such as vitamin C, B, and A, and more than 10 kinds of mineral elements such as phosphorus and iron. They contain a large amount of anthocyanins with high medicinal value. French scientist Dr. Masquel discovered that anthocyanins are natural and powerful free radical scavengers.

Anthocyanins have preventive and therapeutic effects on more than 100 diseases and are known as the seventh essential nutrient after water, protein, fat, carbohydrates, vitamins and minerals.

Anthocyanin is the most direct, effective and safest free radical scavenger discovered by the scientific community to prevent and treat diseases and maintain human health. Its ability to scavenge free radicals is 20 times that of vitamin C and 50 times that of vitamin E. Anthocyanin has a small molecular structure and is the only substance that can penetrate the blood-brain barrier to scavenge free radicals and protect brain cells. It can also reduce some of the harm caused by antibiotics to the human body. Purple sweet potatoes will become one of the main raw materials for anthocyanin.

Purple sweet potatoes have a high cellulose content. This substance can increase the volume of stool, promote gastrointestinal peristalsis, clean up mucus, gas and corruption in the intestinal cavity, excrete toxic substances and carcinogens in the stool, keep the stool unobstructed, improve the digestive tract environment, and prevent the occurrence of gastrointestinal diseases. Zinc, iron, copper, manganese, calcium and selenium in purple sweet potatoes are all natural, and the iron and calcium content is particularly high. Selenium and iron are necessary elements for the human body to resist fatigue, anti-aging, and blood tonic, and have good health care functions. Selenium is also the "king of anti-cancer". It is easily absorbed by the human body and effectively remains in the serum, repairs the myocardium, enhances the body's immunity, removes free radicals that produce cancer in the body, inhibits the synthesis of DNA in cancer cells and the division and growth of cancer cells, and prevents the occurrence of diseases such as gastric cancer and liver cancer.

Side effects and contraindications of purple sweet potatoes

1. People with poor digestive ability should eat it with caution.

2. Purple sweet potatoes contain oxidase, which can easily produce gas. Eating too much at one time can cause bloating and hiccups.

3. Purple sweet potatoes have a relatively high content of calcium. Eating too much will stimulate the secretion of gastric acid and cause heartburn.

4. Avoid eating purple sweet potatoes alone. The best way is to eat them with high-quality protein foods for more comprehensive nutrition.

5. Avoid eating raw. Purple sweet potatoes should be cooked thoroughly before eating, because the starch granules are difficult to be digested and absorbed by the human body without high temperature destruction.

How to make delicious purple sweet potatoes

1. Steamed Purple Sweet Potato

Ingredients:

500g purple sweet potato, some sugar

practice:

1. Wash the purple sweet potato and put it on a plate

2. Put the purple sweet potato on the grate of the pressure cooker with water.

3. Cover the pressure cooker, bring to a boil over high heat and then steam over low heat for 20 minutes

4. Take out the skin and eat it directly or dip it in sugar.

2. Purple Sweet Potato Porridge

Ingredients:

One purple sweet potato, half a bowl of oatmeal (the ratio of purple sweet potato to oatmeal is about 2:1)

practice:

1. Two purple sweet potatoes (later only one was used), half a bowl of oatmeal (the ratio of purple sweet potato to oatmeal is about 2:1)

2. Cut the purple sweet potato into thick slices, then into strips and finally into small cubes (wash and cut for one minute)

3. Add two bowls of water to the purple sweet potato cubes and cook until soft (three minutes)

4. Add oats and boil for one minute

3. Cook purple sweet potatoes

Wash the purple sweet potato.

Put it in water and cook it for about 20 minutes, then you can take it out, let it cool, peel it and eat it.

4. Purple Sweet Potato Mash

Ingredients:

1 medium purple sweet potato, 10g coconut powder, 4 strawberries, 15 raisins

practice:

1. Wash the purple sweet potato and steam it in a steamer

2. Wash and soak the raisins in water

3. Peel the steamed purple sweet potato and mash it with a spoon

4. Chop raisins

5. Add raisins to purple sweet potato puree

6. Add coconut powder to purple potato puree and mix well

7. Use a bowl or mold to shape and use a fork to make patterns

8. Finally, use strawberries for decoration