Introduction: Grapes are rich in vitamins and have high nutritional value. They are eaten in a variety of ways, and both raw food and wine are delicious. However, grapes are a seasonal fruit. After time passes, it is difficult to find a figure, and the preservation time is short and perishable.

In order to keep grapes delicious, people use a special method to dry grapes in the air, which can not only ensure the loss of nutrients, but also have different flavors.

raisins are a great invention. Drying grapes by some special techniques can not only preserve the rich nutrition of grapes, but also have another flavor compared with eating raisins alone. Some people have a strong concept of keeping in good health and will adjust their health by eating raisins. For example, before going to bed at night, some people soak their feet, while others eat raisins, which can regulate their bodies.

raisins are rich in potassium, polyphenols and dietary fiber

1. The potassium content in raisins is quite high, and the potassium content in 1 grams of raisins exceeds 7 mg. An adult's daily reference intake of potassium is 2 mg, so eating a handful of 25 grams of raisins can supply more than 18 mg of potassium. As a small snack, this is already excellent.

2. Grapes are rich in polyphenols, some of which are lost during drying, but most of them can still be preserved. In addition, raisins also contain grape seeds and skins that we don't usually eat. The polyphenols in these two substances have more antioxidant components than those in pulp.

3. Raisins are also a good source of dietary fiber. The dietary fiber content in 1 grams of raisins is 3.3-4.5 grams, which is 6-9 times that of polished white rice.

1. Relieve fatigue

After drying, raisins contain a lot of glucose, which can replenish energy for the body, relieve hunger and fatigue, improve the body's immunity, maintain the body's metabolism, nourish the heart muscle and contribute to the rehabilitation of coronary heart disease.

2. Supplementing qi and enriching blood

Raisin is a very nourishing food, which is rich in iron, can prevent and treat iron deficiency anemia, has the effects of warming kidney, enriching blood and supplementing qi, and can improve cold hands and feet, chills and low back pain.

It is especially suitable for women with anemia, which can improve their complexion and make them ruddy and healthy.

3. Prevention of coronary heart disease

Raisins contain a lot of glucose, which has a nutritional effect on myocardium and is helpful for the rehabilitation of patients with coronary heart disease.

4. Relieve neurasthenia

Raisins also contain a variety of minerals, vitamins and amino acids. Regular consumption has a good tonic effect on neurasthenia and fatigue, and it is also a good food therapy for treating women's diseases.

5. lowering cholesterol

according to modern medical research, eating raisins is beneficial to lowering cholesterol in the blood and inhibiting the oxidation of bad cholesterol.

The fiber in raisins can also prevent pectin from transforming into triglycerides in the blood, which can prevent and treat cardiovascular diseases such as hyperlipidemia and arteriosclerosis.

6. protecting the intestine

raisins can improve the health of the rectum, because raisins contain fiber and tartaric acid, which can make excreta pass through the rectum quickly and reduce the time for dirt to stay in the intestine.

7. Anti-tumor

Raisins contain an ingredient called resveratrol, which can effectively prevent cell malignant transformation or inhibit the growth of malignant tumors, and can also prevent leukemia cells from dividing.

8. Prevention of heart disease

The fiber in raisins can prevent fructose from being converted into triglyceride in the blood, thus reducing the risk of heart disease.

1. The highest content of raisins is sugar, which is important for the general population, but it is necessary to limit the intake for people with diabetes.

If diabetics don't pay attention to limiting sugar intake, their blood sugar will rise, which will seriously endanger their health. The sugar contained in raisins is relatively high, so diabetics are not suitable for eating raisins at ordinary times, so attention should be paid.

2. Although raisins are sweet and have many nutrients needed by human body, the consumption of raisins needs to be limited. The sugar content in raisins is not only high, but also contains a lot of calories.

If you eat too much, it will easily lead to obesity, and even lead to some other uncomfortable reactions. Therefore, you should never eat too much raisins at ordinary times. Only by eating raisins in moderation can you ensure your health.

3. Many people like to drink milk when eating raisins, which is very unscientific and harmful to their health, because the nutrition in raisins and milk will conflict.

If the two are combined, it will not only hinder the normal absorption of nutrients, but also reduce their own nutritional value, so people should not drink milk when eating raisins, otherwise it will be very unfavorable to their intestines.

There is usually no best time to eat raisins. For healthy people, they can eat raisins at any time, and it is generally better to eat them before or after meals. The specific contents are as follows:

Raisins contain a lot of sugar and various nutrients. If you eat raisins about half an hour before meals, you can usually feel full, thus effectively reducing the intake of staple foods and avoiding obesity to a certain extent.

It is better to eat raisins about half an hour after meals, because raisins are rich in dietary fiber, which can promote gastrointestinal peristalsis. Eating raisins about half an hour after meals can effectively promote the decomposition and absorption of food, so there is usually no best time to eat raisins, and it is generally better to eat them before or after meals.

1. Look at the size

When selecting raisins, we should not only pay attention to the size of raisins. The size is determined by the variety of raisins. Big doesn't mean sweet is delicious. When selecting varieties, we should buy the ones with uniform particle size.

2. Look at the color

The color of raisins is determined by the variety of grapes. The main colors are red, black, yellow and green. Different colors determine the overall taste of raisins, so you should choose according to your personal preferences when buying.

The colors of raisins can't be exactly the same. If you find that the colors of raisins are exactly the same, don't buy them.

3. Look at the dryness

Raisins are dried from grapes, and the water content is very low, which is conducive to preservation. If we find raisins sticky, grab a handful and don't buy them.

4. Taste

When we buy raisins, we'd better taste them, and vendors usually want us to taste them, so we'll know if they are good or not. Just taste it and then buy the taste we like.

5. Look at impurities

Don't buy raisins with many impurities, which is unsanitary. We should look carefully. If there are many impurities on the surface of raisins, don't buy them even if they are cheap, which will make you sick.

6. Prevent dyeing

When we choose raisins, if they look very uniform and bright, we should be careful whether the raisins are dyed or not, so we can buy less. Go home and soak in water for a few minutes. There is obvious color in the water, indicating that this raisin is not good. Don't buy it.