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.
Based on these guidelines, limit your saturated fat intake to 18 grams or less when consuming 1,600 calories per day, 22 grams if you eat 2,000 calories per day, and 29 grams or less when consuming 2,600 calories per day.