2 English reference aragus lettuce [2 1 century English-Chinese-English bilingual dictionary]
Summary: Lettuce belongs to Compositae and is an annual or biennial herb. It originated in the coastal areas of China, and was introduced to China via West Asia in the early 7th century, where it was widely planted.
Lettuce is divided into stems and leaves. The former is cultivated everywhere, while the latter is mostly cultivated in the south. It is one of the important vegetables in spring, autumn and winter.
Lettuce for stem is selected from lettuce for leaf after long-term work. The edible part is mainly the flower stem, which is tender and edible. Its stems are as fat as bamboo shoots and tender, so it is also called "lettuce".
The varieties of lettuce can be divided into two kinds according to the shape of leaves: round leaves and pointed leaves. Lettuce has round leaves, long obovate shape, thick stems, thick middle and lower parts, tapering ends and good quality. Lettuce with pointed leaves, sharp, rod-shaped stems, thick in the lower part and thin in the upper part, is not as delicious as lettuce with round leaves.
Lettuce should generally be short, smooth, unbending and neat in size; Thin skin, crisp quality, sufficient moisture, bamboo shoots are not withered, not hollow, and there is no rust spot on the surface; No yellow leaves, rotten leaves, no aging and no bolting; Clean decoration, soilless quality is the best.
Lettuce stems are fat and crisp, delicious and fragrant, and its stems and leaves can be used for cooking.
Lettuce is tender and light green, just like jasper. The dishes can be vegetarian, cold and hot, and the taste is crisp. It also has unique nutritional value.
4 Alias of lettuce Lettuce is also called lettuce, spring vegetables, raw bamboo shoots, thousand-flowered cabbage, stem lettuce, green bamboo shoots, lettuce and fragrant horse shoots.
5 Plant Morphology of Lettuce Lettuce Seedling is like leaf lettuce, which is relatively upright and then grows a large flower stem. Leaves alternate, the whole plant is notched, long and narrow, obovate, oblong or lanceolate. Leaves smooth or withered. Leaves are light green, dark green or purplish red. The stems are green and white, turquoise or purplish red, and the stems are light green, yellow-green or white-green. According to its leaf type, it can be divided into two kinds: round leaf species and pointed leaf species. In cultivation, it can be divided into early maturity, middle maturity and late maturity. Early-maturing seeds have short growth period, early bolting, fast stem elongation and round rod shape; Late-maturing varieties have long growth period, slow stem elongation and thick spindle shape. Lettuce can be planted in spring and autumn. Besides being eaten raw and cooked, it is also the main processed vegetable.
6 Nutrients of Lettuce Lettuce is one of the vegetables containing many nutrients. Every 500g contains protein 3.2g, fat 0.4g, carbohydrate12g, calcium 36mg, iron12mg, thiamine 0.12mg, riboflavin 0.2mg, nicotinic acid 2.4mg and vitamin 65438+.
Analysis of the nutritional value of lettuce 1. Dredging channels and benefiting water, eliminating accumulation and guiding stagnation;
Lettuce tastes fresh and slightly bitter, and can be secreted by digestive enzymes to stimulate appetite. Its milky white serosity can enhance the secretion of gastric juice, digestive glands and bile, thus promoting the functions of various digestive organs, which is especially beneficial to patients with weakened digestive function, decreased acidity of digestive tract and constipation.
2. Diuretic lactation:
The potassium content of lettuce is much higher than that of sodium, which is beneficial to the balance of water and electrolyte in the body and promotes urination and milk secretion. It has a certain dietotherapy effect on patients with hypertension, edema and heart disease;
3. Keep fit and prevent cancer:
Lettuce contains a variety of vitamins and minerals, which can regulate the function of nervous system. Its organic matter is rich in iron that can be absorbed by 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 cancer.
Step 4 relax:
Lettuce contains a lot of plant cellulose, which can promote intestinal peristalsis, dredge digestive tract and help defecation, and can be used to treat various constipation.
8 Buying lettuce lettuce has a high potassium content, which is conducive to diuresis and reducing atrial pressure, which is extremely beneficial to patients with hypertension and heart disease. It contains a small amount of iodine, which has a great influence on people's basic metabolism, physical and mental development and even emotional regulation. Therefore, lettuce has a calming effect, and regular consumption helps to eliminate tension and help sleep. Different from ordinary vegetables, it is rich in fluorine and can participate in the growth of teeth and bones. Can improve digestive system and liver function. * * * The secretion of digestive juice promotes appetite and helps to resist rheumatic diseases and gout.
9 people who are suitable for eating lettuce can eat lettuce in the general population.
1. Old people and children are more suitable;
2. A substance in lettuce has * * effect on optic nerve. According to ancient books, eating more lettuce will make people's eyes burn. If they stop eating for a few days, they can recover themselves. Therefore, people with poor eyesight should not eat more, and people with eye diseases, especially night blindness, should also eat less.
10 the dietotherapy effect of lettuce is bitter and sweet, cool in nature, and has the effects of clearing heat, diuresis and promoting lactation. It can also be used for adjuvant treatment of red heat, short urine, hematuria and dyspepsia. [ 1]
Lettuce tastes sweet, cool and bitter, and enters the stomach;
Lettuce is beneficial to five internal organs, dredging meridians, clearing stomach heat, and clearing away heat and diuresis;
Lettuce is used for dysuria, hematuria, milk obstruction and other diseases.
1 1 suggestions for lettuce 1. Lettuce is suitable for cooking methods such as burning, mixing and frying. You can also make soup and make ingredients. Dishes with it as raw materials include "Fried pork slices with green bamboo shoots", "roasted bamboo shoots" and "spicy green bamboo shoots".
2. Lettuce is afraid of salt, and it is delicious to put less salt.
3. Pay attention to time and temperature when blanching lettuce. If the blanching time is too long and the temperature is too high, lettuce will become soft and lose its crisp taste.
4. Lettuce is a traditional vegetable for breast enhancement. When it is used with beef containing B vitamins, it has the function of invigorating qi and blood, and can promote the nutritional supply of * * * parts.
5. Squeeze the lettuce dry before cooking to increase the crispness of the lettuce. But from the point of view of nutrition, don't squeeze out water, which will lose a lot of water-soluble vitamins.
Recommended consumption of lettuce 12