2. Extraction of rice bran oil: The extraction of rice bran oil has made great progress in China, because rice bran oil is mainly unsaturated fatty acid, and also contains vitamin E, squalene, active lipase and solid plant components. Rice bran oil can reduce the excessive deposition of cholesterol on blood vessel wall and can be used to prevent and treat hyperlipidemia. Three ferulic acid ester antioxidants rich in rice bran oil play an important role in the antioxidant stability of rice bran oil.
3. Extraction of phytic acid: phytic acid usually appears in the form of calcium phytate in plants, and the content of calcium phytate in rice bran can reach10% ~1%,which can usually be extracted by precipitation or ion exchange. After phytic acid is extracted from defatted rice bran, the residue can be used as feed with high nutritional value.
4. Ferulic acid extracted from rice bran, as a food additive, has the functions of absorbing ultraviolet rays and preventing oxidation. Ceramide glycoside contained in rice bran can inhibit the production of melanin, and cosmetics made from it can keep skin moist and white.
Extended data
Hu Chengmiao, executive president of China Cereals and Oils Society, said at the first international exchange meeting on rice bran oil industry development in June, 20 12: If rice bran resources can be reasonably utilized, China can produce more than 2.3 million tons of rice bran oil every year, which is equivalent to the oil content of soybeans produced in more than 654.38 billion mu of land in China, which will increase the self-sufficiency rate of edible oil in China by 5% to 10%.
China is a big rice producer. 20 1 1 year, China's rice output reached 200 million tons, while rice bran reached180,000 tons, and the oil content of rice bran reached 15%. "China has the natural advantage of promoting rice oil. This is one of the effective ways to improve the self-sufficiency rate of edible oil in China without competing with grain, and it is also a useful attempt to solve the problem of high external dependence of oil in China.
Technical limitation is the main reason for the low utilization rate of rice bran in China. The pioneer of scientific and technological innovation in the national grain and oil industry has created a brand-new rice oil production mode of "one dispersion and two concentration" with decentralized preservation, centralized extraction and centralized refining, overcoming the problem that the best preservation state of rice husk and rice embryo is only 6 hours, and effectively expanding the production capacity.
Baidu encyclopedia-rice bran
People's Network-If rice bran resources are used reasonably, China can produce more than 2.3 million tons of rice every year.