Is the nutritional value of purple potatoes higher than that of sweet potatoes?

In addition to the nutrients of ordinary sweet potatoes, purple potatoes are also rich in selenium and anthocyanins. Anthocyanins have a preventive and ** effect on more than 100 diseases, and are known as the seventh essential nutrient after water, protein, fat, carbohydrates, vitamins, and minerals. Anthocyanins are the most direct, effective and safest free radical scavengers found by the scientific community to prevent and treat diseases and maintain human health, and their ability to scavenge free radicals is 20 times that of vitamin C and 50 times that of vitamin E.

Sweet potatoes and purple potatoes have similar nutritional elements: in addition to starch, soluble sugar, vitamins and amino acids, there are proteins, fats, dietary fibers, and minerals such as calcium and iron. Purple potatoes basically contain all the nutrients of sweet potatoes, rich in protein, dietary fiber, vitamins and trace elements.

After cultivating purple potatoes in Japan, they deliberately compared the differences between purple potatoes and ordinary sweet potatoes, and found that the lysine, copper, manganese, potassium, and zinc in purple potatoes were 3-5 times that of ordinary sweet potatoes.

Purple potato anthocyanins can significantly increase the content of bifidobacteria, lactic acid bacteria and enterococci in vitro experiments, and it is speculated that the consumption of purple potatoes rich in anthocyanins has benefits for the intestinal microenvironment and human health, which is also beneficial for the prevention of bowel cancer. As for whether it can achieve the effect of sweet potatoes on preventing constipation, maintaining the elasticity of blood vessels and preventing atherosclerosis. Compared to rice, the content of vitamin B1 and B2 is 6 times and 3 times higher than that of rice, respectively.

In particular, sweet potatoes are rich in lysine, while rice and flour are precisely lacking in lysine.

There are 8 kinds of vitamins such as vitamin A, B, and C, and more than 10 kinds of natural mineral elements that are necessary for the human body to resist fatigue and replenish blood, such as phosphorus and iron. Like sweet potatoes, purple potatoes are also rich in fiber, which can promote detoxification, improve the digestive tract environment, and prevent gastrointestinal diseases. It helps to defecate, cleans the digestive tract, shortens the retention time of toxic substances in food in the intestines, reduces the concentration of intestinal carcinogens, and prevents hemorrhoids and colorectal cancer.

At the same time, fiber can absorb a part of glucose, so that the amount of sugar in the blood is reduced, which helps to prevent diabetes.

It tastes drier and has a lighter sweetness. Because there is a lot of starch and low sugar content, the taste is not so sweet, and it is not very fragrant when baked, so it is not suitable for roasting and eating. Overall, the health benefits of white-fleshed sweet potatoes are less pronounced than those of other coloured varieties.

Sweet potatoes are rich in carotene, and although their functions are different, anthocyanins have better antioxidant effects. Secondly, purple potatoes are higher in minerals and dietary fiber than sweet potatoes, which is more conducive to delaying postprandial blood sugar. Of course, the water content of purple potatoes is relatively lower than that of sweet potatoes, so they taste sand and soft.

Purple sweet potato has high nutritional value. The content of selenium in purple potatoes is higher than that of sweet potatoes, and the anthocyanin content of purple potatoes is relatively high, which is generally not found in sweet potatoes, both of which are beneficial nutrients to the human body.

The nutritional value of purple potatoes is higher, the ** of purple potatoes is more expensive, and there are few purple potatoes on the market, and the sugar content is not very high, and a lot of trace elements can also be supplemented.

From the perspective of nutritional value, purple potatoes are higher in composition and more nutritious, which is very suitable for young children and women.

Sweet potatoes generally refer to sweet potatoes. In general, purple potatoes contain more nutrients than sweet potatoes, so purple potatoes are usually more nutritious. The details are as follows:

Purple potatoes contain a variety of nutrients such as dietary fiber, vitamins, selenium, zinc, potassium, anthocyanins, etc., which have the effects of antioxidant, preventing high blood pressure, and enhancing immunity. Sweet potatoes contain protein, carotene, vitamins and other nutrients, which have the functions of nourishing and nourishing qi, nourishing blood and nourishing the intestines, and moistening the intestines. In general, purple potatoes are more nutritious, although the nutrients contained in purple potatoes and sweet potatoes have certain similarities, but purple potatoes contain more nutrients such as selenium, zinc, and anthocyanins than sweet potatoes, which have the functions of antioxidant and maintain the normal human immune system, so purple potatoes are generally more nutritious.

1. Anthocyanins:

1. Antioxidant: It can reduce the damage of ultraviolet rays in the environment, protect the environment, and have a certain effect on avoiding oxidation of cells, so as to play a role in sun protection;

2. Anti-radiation: anthocyanins are relatively stable in photothermal, acid-alkali environment, and have strong radiation resistance, which is suitable for patients who have been exposed to electronic products for a long time, such as mobile phones and computers;

3. Protect eyesight: Anthocyanins can avoid the oxidation of vitamin A, thereby increasing the content of vitamin A in the human retina, helping to protect eyesight and prevent night blindness.

2. Selenium: It is an essential trace element for the human body, which has a certain effect of antioxidant and protecting the integrity of the cell membrane, and also has the functions of assisting in inhibiting cardiovascular disease, inhibiting cancer and anti-cancer, but it needs long-term intake to have a certain effect.

It should be noted that eating too much purple potatoes and sweet potatoes may cause symptoms such as bloating, nausea, and diarrhea, so it is recommended to eat them in moderation.

Purple potatoes are more nutritious.

Compared with sweet potatoes, purple potatoes have a higher nutritional value, because purple potatoes, an important nutrient of sweet potatoes, are also included. In addition, purple potatoes also contain a nutrient that sweet potatoes do not have, namely anthocyanins. The unique color of purple sweet potato is ** anthocyanins, which are also natural free radical scavengers, and their ability to scavenge free radicals is much greater than that of vitamins C and E.

But generally speaking, it is enough to eat sweet potatoes at home, and people in need can buy some purple potatoes to eat. However, whether it is sweet potatoes or purple potatoes, because the starch content is not low, they cannot be eaten more.

Preparation of purple sweet potato

1. Peel and slice the purple sweet potato, put it in the pot and steam it, pound it into purple sweet potato puree after steaming, and add an appropriate amount of raisins to increase the sweet and sour taste, which will be more delicious. Purple potatoes are not often dried in Tongxin, and it is difficult to knead glutinous rice flour directly into a ball, so you can add a little water to dilute it into a thick paste.

2. Add glutinous rice flour in batches, stir evenly, and knead into a glutinous rice dough with moderate softness and hardness. Because the water content of purple potatoes is different, the amount of glutinous rice flour is not fixed, and it should be adjusted according to the state.

3. Pull a small ball, first hold it firmly with your hands, and then knead it round. There are many ways to eat kneaded meatballs. The most common is to cook it directly and make glutinous rice balls to eat. You can also make more, roll on the dry glutinous rice flour to prevent sticking, put it in a fresh-keeping bag to seal and freeze, and it is very convenient to eat and cook at any time.

4. The first way to eat shared today is not the same as tangyuan, the name is sugar does not shake, and it tastes better. First, put the purple potato balls in boiling water and cook until they float. Remove from cool water to prevent sticking.

5. Add 1 tablespoon of brown sugar or white sugar to the pot, add half a tablespoon of water, cook over low heat until the sugar melts, the syrup thickens, put in the cooked purple potato balls, turn over the round and mix evenly, so that each purple potato is coated with a layer of syrup.

6. After the pot is cooked, you can also sprinkle a little cooked sesame seeds and cooked peanuts on the Dan will be more delicious, sweet and sour, glutinous, and eat a bite, it is really a very happy feeling.

Tanida Dream (Natural Grain Food Advocate) Answer:

Nutritional value of purple sweet potato.

Selenium and zinc, rich in potassium and iron.

The content of selenium and zinc in purple potatoes is 3 8 times higher than that of ordinary sweet potatoes, and it contains more potassium and iron, which can have obvious effects of iron and blood supplementation.

Rich in anthocyanin cellulose.

The color of purple potatoes comes from anthocyanins, which are natural and powerful free radical scavengers. Purple potatoes have more cellulose, which can promote intestinal peristalsis, have certain benefits for cleaning up the garbage in the intestines, and can also excrete toxic substances from the body through defecation. Keep the stool smooth, improve the digestive tract environment, and prevent the occurrence of gastrointestinal diseases.

Rich in vitamins.

The young leaves of purple sweet potato stems are rich in life-sustaining Zen sin, protein, trace elements, congratulatory fiber and soluble non-oxidizing substances.

Compared with sweet potatoes, purple potatoes have higher nutritional value.

This is because purple potatoes, an important nutrient element of sweet potatoes, also contain, in addition, purple potatoes also contain a nutrient element that sweet potatoes do not have, that is, anthocyanins, and the color of purple potatoes is ** anthocyanins. At the same time, the content of zinc and selenium in purple potatoes is also 3-8 times higher than that of sweet potatoes.

Purple sweet potato is rich in dietary fiber, starch, vitamins, trace elements (selenium, iron, hail, calcium, potassium, etc.) and anthocyanins, glycoproteins, carotene, dehydroepiandrostakes (ster) ketones and other functional factors.

Purple sweet potato is an annual herbaceous plant of the family Spinaceae. Potatoes are long spindles, and the flesh is purple to dark purple; Seeds rounded, winged; The flowering period is early summer, and the tubery setting period is from June to August.

How to choose purple sweet potato

1. Look at the shape: When choosing, you should choose a slightly longer shape and a spinning cone shape, and the purple sweet potato of this shape tastes more pure.

2. Look at the skin: the skin is smoother and there is no abnormality, then the purple potato is relatively fresh and has not deteriorated.

3. Smell the taste: there is no strange smell or musty smell, you can choose with confidence, if the purple potato has a moldy smell or tastes strange, don't choose.

4. Pinch softness: purple sweet potato is rich in starch, is a hard tuber, if the purple sweet potato is soft in the hand, the skin is shrunk, it is likely to be moldy and deteriorated, it is not recommended to buy.

The above content reference: Encyclopedia - Purple Sweet Potato.