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. You can find a full list of low-fat foods listed in the low-fat, low-fiber guidelines at the end of this resource. Low-fiber foods. We recommend that you limit your fiber intake to 12 grams a day.