□　Basic introduction
　　Lecithin is derived from Greek word-Lekiths, which means yolk. Lecithin is discovered from yolk originally and a fresh yolk contains about 10% lecithin. In recent years, lecithin is reputed as three nutrients, ranking with protein and vitamin, and become golden product on health products market. Lecithin is basic ingredient of body cell membrane which is the safeguard of cell and decides transfer of energy and information between cells. Enough lecithin means good immunity, metabolism and vitality. It fastens more on brain and cerebral nerve system, blood circulation system, immune system and some important organs like heart, liver and kidney.

□　Main effect
　　1. protect liver function
　　2. nutriments for diabetics
　　3. keep clearness of blood
　　4. promote growth of nerve system of fetus and baby
　　5. hairdressing
　　6. prevent senile dementia
　　7. cure and prevent gallstone
　　8. regulate mood and relieve mental pressure

□　Introduction of yolk lecithin
　　At present, most lecithin products on market are soybean lecithin whose bioactivity is worse than yolk lecithin. As embryo phospholipid, soybean lecithin is not as good as yolk lecithin. In international market, the price of soybean lecithin is10 times than soybean lecithin and even more, westerners prefer yolk lecithin and make the other food additive. Yolk lecithin is easier to absorb and its main feature is oxidation resistance, high purity, good absorption and no side effect.
　　Made from lecithin which is developed by experts of CAU on 95 National Science Important Project, according to physiologic tendency of middle aged and elderly people, Beijing Webly Sci.&Tech. Development Co., Ltd. developed high-nutrition food-Bolile. Through biotechnology, this product lowers the content of cholesterol and saturated fatty acid in vitellolutein, keeps bioactivity of DHA, lecithin, linolenic acid and vitamin E, and strengthens their content in vitellolutein. So it is the optimal functional nutritious food for middle aged and elderly people.