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.
General recommendations for a low-calorie diet include: Reducing calorie intake to 1,200 to 1,500 calories per day for women and 1,500 to 1,800 calories per day for men. Women should not restrict themselves to fewer than 1,000 calories per day and men to fewer than 1,200 calories per day without medical supervision. Limiting fat intake to no more than 20% to 35% of your total calorie intake. For a person following a 1,500-calorie diet, this means eating no more than 35 to 60 grams of fat per day.