What are the benefits of eating green beans? How to choose and preserve green beans

French beans are a kind of vegetable that we often eat in our daily life. French beans contain copper, which plays an important role in human health. Today we will introduce French beans in detail from four aspects: the benefits of eating French beans, the selection and preservation of French beans, and the cooking techniques of French beans.

Contents of this article

1. What are the benefits of eating green beans?

2. Selection and preservation of green beans

3. Green beans cooking tips

What are the benefits of eating green beans?

1. Promote the development of the body. It has been determined that green beans contain copper, which plays an important role in human health. Eating green beans and supplementing copper can promote the healthy development of hair, bones, skin, brain and liver.

2. Relieve iron deficiency anemia. Green beans are rich in vitamin C and iron. Regular consumption is beneficial for iron deficiency anemia.

3. It nourishes the stomach and relieves qi. It is beneficial for spleen deficiency and dampness, poor appetite and loose stools, and dampness and turbidity. It can also be used for symptoms such as summer-heat and dampness, vomiting, diarrhea, and convulsions.

4. Eliminate bloating. Green beans can also eliminate bloating, replenish qi and relieve gas.

Selection and storage of green beans

Good green beans should have full pods, be plump and juicy, no old tendons when broken, tender green color, smooth skin and no insect marks. Therefore, the purchasing standards should be: full pods, plump and juicy, no old tendons when broken, tender green color, smooth skin and no insect marks.

In addition, there are many varieties of green beans, the quality of long stalks is better than that of short stalks, and the round stick pod type is better than the flat pod type. But there are exceptions, such as the tall stalks, flat pods, and white shells produced in Northeast China, commonly known as oil beans, which are tender, glutinous, fragrant and delicious.

Green beans can usually be stored in a plastic bag and refrigerated for 5 to 7 days, but brown spots will gradually appear if left for too long. If you want to store them longer, it is best to wash the green beans, blanch them in salt water, drain them, and freeze them in the refrigerator. Remember to drain the water so that the frozen green beans will not stick together.

French Beans Cooking Tips

1. The bean tendons should be removed before cooking, otherwise it will affect the taste and be difficult to digest.

2. The cooking time should be long rather than short. Make sure the green beans are cooked thoroughly, otherwise poisoning will occur.

3. To prevent poisoning, lentils should be processed before eating. They can be blanched in boiling water or fried in hot oil until they change color and are cooked through. They can then be eaten safely. The toxic components of green beans are mainly saponins and trypsin inhibitors. When cooking, the beans should be cooked first, then removed, and then stewed with seasonings to detoxify.

4. If green beans are not cooked, the saponins in the beans will strongly irritate the digestive tract, and the beans contain thrombin, which has a blood coagulation effect. In addition, green beans also contain nitrite and trypsin, which can irritate the human stomach and intestines, causing food poisoning and symptoms of gastroenteritis. In order to prevent green beans from poisoning, be sure to cook the green beans thoroughly.