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.
Assuming 2,000 calories per day, the recommended fat intake for a full day is between 44 and 78 grams. The Healthy Dining fat guideline for one meal is 25 grams or fewer. Most of the menu items featured on this site have considerably fewer than 25 grams of fat.