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.
To reduce your disease risks, the Dietary Guidelines for Americans 2010 encourage you to limit saturated fat intake to less than 10 percent of your total energy intake, or less than 22 grams per day for a 2,000-calorie diet, by replacing it with healthier, unsaturated fats.