2. The purine content of beef is 87 mg of purine per 100 grams, which is a medium purine food.

3. According to the purine content per 100 grams of food can be divided into five categories: containing more than 100 milligrams of purine for high-purine food, 75 to 100 milligrams of medium-purine food, 10 milligrams to 75 milligrams of less purine food, 10 milligrams of the following for the very few purine food, as well as no purine food.

4. Purine is an organic compound, is a colorless crystal, in the body of purine oxidation into uric acid, purine is mainly in the form of purine nucleotides, as the energy supply and metabolic regulation and the composition of coenzymes and so on play a very important role.