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.
Total Fat. According to the IOM, fat should account for 20 to 35 percent of your total caloric intake. If you follow a 1,200 calorie diet, you would then need about 240 to 420 calories each day from fat.Since fat contains 9 calories per gram that is equivalent to about 27 grams to 47 grams of total fat per day.he U.S. Department of Agriculture, however, advises limiting saturated fat intake to less than 10 percent of your total daily calories. If you follow a 1,200-calorie diet, avoid consuming more than 120 calories from saturated fat, or 13 grams, each day.