Introduction to folic acid
Folic acid is a derivative of pteridine, which was originally isolated from the liver. Later, it was found that the green leaves of plants are very rich, so it is named folic acid. It widely exists in meat, fresh fruits and vegetables. It is a yellow crystalline powder, tasteless and odorless. Its sodium salt is easily soluble in water, insoluble in alcohol, ether and other organic solvents, insoluble in cold water but slightly soluble in hot water. It is unstable in acidic solution and easily d