2. The biological value (BV) of protein is 77, and the utilization rate (PER) of protein is 2.2 (1.5 for wheat and 1. 1 for corn). The digestibility of protein is over 90%, which is higher than other cereals, so rice protein has high nutritional value.
Rice is rich in nutrition and is one of the main foods for our people. Taking japonica rice as an example, every100g of japonica rice contains 6.7g of protein, 0.9g of fat, 77.6g of carbohydrate, 0.3g of crude fiber, 7mg of calcium, 0.36mg of phosphorus/kloc-0, 2.3mg of iron and 0.0mg of vitamin B/kloc-0.16mg.
Extended data:
Rice is the main source of B vitamins and an important dietotherapy resource to prevent beriberi and eliminate oral inflammation.
1, oryzanol, a unique ingredient in rice, is called "beauty element" and is a melanin inhibitor in plants. It has mild nature and no side effects, and can reduce the activity of melanocytes, inhibit the formation, migration and diffusion of melanin, and relieve pigmentation.
2, rice bran sterol, which has high permeability to the skin, can maintain the softness and moisture of cells and effectively maintain the moisture on the skin surface because it contains sufficient moisture.
3, starch, rice contains about 70% starch, including cellulose and hemicellulose and soluble sugar. Indica rice and japonica rice contain more amylopectin, which is easily soluble in water and can be completely hydrolyzed by amylase and converted into maltose.
4. In protein, the biological value of protein in rice is equivalent to that of soybean. Rice is rich in lysine and threonine, and the proportion of various amino acids is close to the needs of human body.
5. Vitamins and inorganic salts. Rice is also rich in vitamin B 1 and inorganic salts such as calcium, phosphorus and iron. Among them, japonica rice has higher phosphorus content and lower calcium content than glutinous rice.
6. Dietary fiber, which contains water-soluble dietary fiber, can excrete intestinal bile acid juice and prevent cardiovascular diseases such as arteriosclerosis. ?
References:
Baidu Encyclopedia-Rice (Food)