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.
The American Heart Association recommends limiting saturated fats to less than 7 percent of total daily calories, which means no more than 9 grams of saturated fat based on eating 1,200 calories daily. If you canât eliminate trans fats, limit them to less than 1 gram daily.