Enzymes have active sites where they come into contact with particular substrates. The catalytic properties of enzymes are a cyclic process. Once a substrate has come into contact with the active site of an enzyme, it is modified by the enzyme to form the end product.
1 Reducing saturated fat to no more than 5 to 6 percent of total calories. 2  For someone eating 2,000 calories a day thatâs about 11 to 13 grams of saturated fat. 3  Reducing the percent of calories from trans fat.
We recommend that you limit your fat intake to 40 grams a day. 1  Eat foods that are low in fat, such as: 2  Food that is baked, broiled, or steamed. 3  Nonfat and low-fat milk and dairy products. 4  Low-fat and nonfat salad dressings. 5  Lean cuts of meat that have been trimmed of visible fat.