Potato Solanaceae Solanaceae annual herb.

Also known as potatoes, potatoes, yam eggs, potatoes (common name for people in Hong Kong and Guangzhou), etc.

Tubers are edible and are an important food and vegetable crop.

Some scholars believe that there are only 7 cultivated species of potatoes, mainly distributed in the temperate and subtropical areas of the Andes Mountains of South America and its nearby coastal areas.

The most important potato cultivars are the tetraploid species.

Tetraploid cultivated potatoes spread all over the world. The short-day type was first introduced from Colombia in South America to Spain in Europe in 1570. After artificial selection, it became the long-day type; later it spread to Asia, North America, southern Africa and Australia.

Waiting places.

Potatoes are high-yield, rich in nutrients, and highly adaptable to the environment. They are now spread all over the world. In tropical and subtropical countries, they can be cultivated and obtain higher yields even in winter or cool seasons.

Potatoes, sweet potatoes, taro and other potato foods are rich in nutrients. They contain much higher levels of protein, vitamin C, vitamin B1, and vitamin B2 than apples. They also have high levels of calcium, phosphorus, magnesium, and potassium, especially potassium.

The content can be said to rank first among vegetables.

Potatoes contain a large amount of high-quality fiber, which can prevent constipation and prevent and treat cancer.

So, how to eat potatoes well?

First of all, the amount must be ensured. The daily consumption of potato foods (potatoes, sweet potatoes, taro) should be about 80 grams.

Secondly, there is a good mix of meat and vegetables. As long as the mix is ??good, you can enjoy delicious food while maintaining a slim figure.

When eating potatoes, the intake of staple food should be reduced accordingly. The ratio of potatoes to staple food can be controlled at 3:1 to 4:1.

If you eat about 80 grams of potatoes every day, it may help reduce the risk of stroke.

Mashed potatoes and French fries, which are commonly found in fast food, are oxidized during processing, destroying a large amount of vitamin C and greatly reducing their nutritional content.

For French fries, it is easy to increase the fat intake, and it is difficult to judge whether the oil of French fries is fresh. In addition, repeated high-temperature heating can produce polymers, such as toxic cyclic monopolymers, which are carcinogenic.

Material, so try to eat as little as possible.

Nutritionists point out that you don’t have to worry about excess fat when eating potatoes because they only contain 0.1% fat, which is the smallest among all hunger-satisfying foods. Eating more potatoes every day can reduce fat intake and gradually metabolize excess fat.

But it is worth noting that potatoes, especially potatoes, contain toxic substances called alkaloids. Ingesting a large amount of alkaloids in the human body can cause poisoning, nausea, diarrhea and other reactions.

The alkaloids in potatoes are steroid glycoalkaloids, mainly solanine and chaconine.

Its structure is similar to human steroid hormones, such as androgens, estrogen, progesterone and other sex hormones.

According to foreign reports, freshly harvested potatoes contain 20 to 80 mg of alkaloids per kilogram, which rises to 75 to 114 mg after storage for a period of time.

Sprouted or moldy potatoes will further increase their alkaloid content.

The content of this toxic compound is higher in potato skins, so be sure to peel them when eating, especially the green skin.

In addition, sprouted potatoes are more poisonous. When eating, be sure to dig out the sprouts and roots and soak them in clean water. When stewing, the potatoes should be stewed over high heat.

In addition, if pregnant women often eat potatoes with high alkaloid content, accumulation in the body may lead to fetal malformations.

Of course, individual differences between people are quite large, and not everyone will experience abnormalities after eating potatoes. However, pregnant women are still better to not eat or eat less potatoes, especially not to eat potatoes that have been stored and sprouted for a long time.

This is especially important for women in the first trimester of pregnancy.

Species name: Dioscorea Scientific name: Dioscorea opposita Alias: yam, Huaiyam, Huaiyam, potato, yam, potato, Yuyan.

Odor: (root) sweet, warm, flat, non-toxic.

Nutritional analysis 1. Strengthen the spleen, benefit the stomach, and aid digestion: Yams contain amylase, polyphenol oxidase and other substances, which are beneficial to the digestion and absorption functions of the spleen and stomach. It is a medicinal and food product that can only tonify the spleen and stomach.

It can be eaten regardless of spleen yang deficiency or stomach yin deficiency.

Clinically, it is commonly used to treat symptoms such as weakness of the spleen and stomach, lack of food, fatigue, diarrhea and other diseases; 2. Nourish the kidney and nourish the essence: Yams contain a variety of nutrients, which can strengthen the body, nourish the kidney and nourish the essence.