Spinach. Leng, also known as spinach, Persia grass. With leaves and tender stems for food. Persian origin, the year 2000 has been cultivated. After the spread of North Africa, spread by the Moors in Spain and other countries in Western Europe. Spinach 647 incoming Tang Dynasty. Taproot developed spinach, red fleshy root, sweet edible. Spinacia cold vegetables, long-day plants. Northern China has sown winter to spring harvest, commonly known as hard spinach.
Spinach contains vitamin A, vitamin B, vitamin C, vitamin D, carotene, protein, iron, phosphorus, oxalic acid and so on. Vitamin B2 helps the body absorb other vitamins, and plenty of vitamin A can prevent colds. Containing nicotinic acid, so slightly astringent taste. Contain large amounts of plant fiber, can promote intestinal peristalsis, which will help defecation. Although the iron in spinach is more vegetables, but the gap is not with other vegetables. However, spinach Vegetables contain substances inhibit the absorption of iron, including high levels of oxalic acid, which will be combined with iron to form ferrous oxalate, making the iron in spinach can not easily be absorbed by the body. In addition, high levels of oxalic acid to remove iron from the body, but also inhibits the absorption and utilization of iron, and therefore the absorption rate of iron in spinach is only 1%.
Spinach can reduce blood cholesterol, the excess cholesterol in the intestines convert alcohol fecal fat excretion, maintaining good blood vessel elasticity; manganese spinach contains a lot of iron and trace amounts can improve and prevent anemia, increased red blood cell heme raw materials. Contains saponins can stimulate pancreatic secretion, promote carbohydrate digestion, increase appetite, is the basic food for people with diabetes, in addition to a sense of satiety, but also help the metabolism of sugar. Contained in the B1 and B2 can promote the growth and development