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.
You should limit your average daily cholesterol intake to less than 300 milligrams. Mono and polyunsaturated fats, both of which are considered good fats, should take up no â¦ more than 20 percent of your total calorie intake each day.