Lettuce is lettuce; Lettuce is pronounced w not j ù, lettuce w not s ǔ n.

Lettuce (scientific name: Lactuca sativa L. var. angustanairish.) is also called lettuce. Lettuce in Compositae can form a variety of tender stems and is a biennial herb. Alias lettuce, lettuce shoots, green shoots and lettuce. Delivery period: January-April. Lettuce originated in the Mediterranean coast and was introduced to China in the 5th century.

The aboveground stems are edible, with white-green skin, crisp and tender flesh, green young stems, and turn white-green after maturity. Mainly edible tender stems, which can be eaten raw, cold, fried, dried or pickled, and tender leaves can also be eaten. Stems and leaves contain lettuce, which is bitter and has analgesic effect. Lettuce has strong adaptability and can be cultivated in spring and autumn or winter, mainly in spring and harvested in summer.

Extended information:

Lettuce is also known by other names: Lycopersicon esculentum, borage, green bamboo shoots and bamboo shoots.

Benefits of eating lettuce:

1. It has protective effect on liver and stomach

Lettuce contains an aromatic hydrocarbon hydroxylated ester, which has protective effect on liver and stomach and increases appetite. Lettuce tastes fresh and slightly bitter, which can stimulate digestion, increase bile secretion, stimulate gastrointestinal peristalsis and help to increase appetite. In the stems and leaves of lettuce, there is a white emulsion called lettuce sub-slice, which has analgesic and anesthetic effects, can stimulate the secretion of digestive juice and promote appetite. Improve liver function and help to resist rheumatic diseases and gout.

2. Strengthening the body and preventing cancer

Lettuce contains a variety of vitamins and minerals, and has the function of regulating the nervous system. Its organic content is rich in iron that can be absorbed by the human body, which is very beneficial to patients with iron deficiency anemia. The hot water extract of lettuce has a high inhibitory rate on some cancer cells, so it can be used to prevent and fight cancer.

3. Insulin "activator"

Lettuce is rich in vitamins, calcium, phosphorus, iron, potassium, magnesium and dietary fiber. Among them, nicotinic acid is considered as an activator of insulin, which is helpful to improve the function of glucose metabolism for diabetics.

4, improve sleep

Lettuce contains a small amount of iodine, which has a significant impact on people's basic metabolism, mental and physical development and even emotional regulation. Therefore, lettuce has a calming effect, and regular consumption helps to eliminate tension, stabilize mood and help sleep. 1, the opening of Shu Li, the elimination of stagnation under the gas.

Reference: People's Daily Online-Eat Lettuce to nourish the liver and protect the stomach

Reference: Baidu Encyclopedia-Lettuce.