Up to now, it has been found that rice bran contains many cholesterol-lowering compounds, but the existing data can not clarify the cholesterol-lowering ability of each compound. 199 1 year. Rukmini and Raghuram reported the nutritional and biochemical effects of rice bran oil on reducing blood lipid. The conclusion is that the main components in rice bran oil, such as monounsaturated fatty acid, linoleic acid, linolenic acid and a small amount of unsaponifiable matter, can reduce cholesterol.

Kahlon and Newman found that defatted rice bran was not as effective as whole rice bran in reducing blood lipid after studying rats and chickens. In order to determine the cholesterol-lowering components in rice bran, it is necessary to further study the changes of blood lipids in full-fat and defatted rice bran. Anti-cancer, skin care and health care effects

Researchers at Asahi University in Japan found through animal experiments that ceramide glycoside contained in rice bran can inhibit melanin production, and cosmetics made from it can keep skin moist and white. Ferulic acid extracted from rice bran by Wakayama Industrial Technology Center, as a food additive, has the functions of absorbing ultraviolet rays and preventing oxidation. It can be combined with aromatic alcohol in citric acid grass oil to make anti-cancer substance EGMP, which can prevent colorectal cancer and is safe and convenient.

Extracting rice bran oil

Extracting rice bran oil from rice bran has made great progress in China. Because rice bran oil is mainly unsaturated fatty acids, it also contains vitamin E, squalene, active lipase, sitosterol, sterol, stigmasterol, three ferulate antioxidants 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 and atherosclerosis. Three ferulic acid ester antioxidants rich in rice bran oil play an important role in its antioxidant stability, also have the function of regulating human brain function, and have certain preventive and therapeutic effects on vascular headache and autonomic nervous dysfunction. The study also found that rice bran oil has sedative and hypnotic effects.

Extraction of phytic acid

Phytic acid, namely cyclohexanol phosphate, usually appears in the form of calcium phytate in plants. The content of calcium phytate in rice bran can reach 10%~ 1 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. In Japan, the rice bran from which calcium phytate is extracted is called high-protein processed rice bran, and the protein content can be as high as 25%.