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.
On a standard 2,000-calorie diet, that means restricting yourself to 55-77 grams of fat and 16 grams of saturated fat per day. If you already have heart problems, you may need to cut your fat intake even more, but only with your doctor's guidance.