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.
Daily Grams of Fat. Based on a 2,000 calorie diet, your recommended fat intake is around 400 to 700 calories per day, which is 20 to 35 percent. Since each gram of fat has 9 calories, your ideal amount ranges between 45 to 78 grams of fat per day. Your recommended saturated fat intake is 22 grams or less per day. If you are at risk or have heart disease, reduce your saturated fat intake even further to 7 percent of your calories, equivalent to 140 calories or 15 grams per day. Trans fats should be limited to no more than 20 calories or 2.2 grams per day.