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.
Limit saturated, or âbad,â fats found in high-fat meats, butter and full-fat dairy products to less than 10 percent of your energy intake, or fewer than 23 grams for a 2,000-calorie diet and less than 29 grams per day for 2,600 calories.