1g of fat oxidized in the body to produce energy value of 39.54KJ
1g of protein oxidized in the body to produce energy value of 18.2KJ
Generally, in a mixed diet, the absorption rate of carbohydrates is 98%, 95% of the fat, and protein is 92%. 92%, so the three energy-producing nutrients oxidized in the body to produce the actual energy value is:
1g carbohydrate: 17.15KJ * 98% = 16.81KJ (4.0kcal)
1g fat: 39.54KJ * 95% = 37.56KJ (9.0kcal)
1g protein: 18.2KJ * 92% = 16.74KJ. 92%=16.74KJ(4.0kcal)
Protein energy supply=Mass of protein intake*Energy supply of 1g of protein(i.e. 4.0kcal)
Fat energy supply=Mass of fat intake*Energy supply of 1g of fat(i.e. 9.0kcal)
Total energy=Carbohydrate energy supply+Protein energy supply+Fat energy supply
So 70*4 means how many kcal for protein and 58.3*9 means how many kcal for fat
Carbohydrates account for 60% of the total energy supply, but only approximately, it's an estimate, if the question is to ask you to prepare a meal, you can convert some of the staple food required according to the 60% of carbohydrates
Depending on the food intake, you may need to use the following formula: "Carbohydrates", "Fat", "Fat", "Fat", "Fat", "Fats", "Fats", "Fats", "Fats", "Fats". p>According to the intake of different food for energy is different, in the calculation of the exact number of functions is to be based on protein, fat for energy to calculate, can not be directly multiplied by 60%, unless the title of the topic clearly informs the carbohydrate energy is 60%
Placed in the red line of the one in fact, the same reason, the title of the topic informs the amount of protein needed and the percentage of fat energy supply, direct The same applies to the one underlined in red. If you don't understand it very well, look at the following equations:
Protein energy ratio = protein intake *4/total energy intake * 100%
Carbohydrate energy ratio = carbohydrate intake *4/total energy intake * 100%
Fat energy ratio = fat intake *9/total energy intake * 100%
Knowing the fat ratio, use the fat ratio to calculate the percentage of fat needed to provide energy. fat energy ratio, multiply fat energy ratio by total energy intake and you have fat intake*9.
It's the same thing as the one above
It's the same thing as the one above
It's the same thing as the one above
It's the same thing as the one above