Measuring Nutritional Value

Why just burning a food item [provide:proofs] information about its value as a portion of food the nutritional value of [food:nuts] can be measured on many different scales the most basic measurement scale is the free energy content of the food in other [words:world] how much energy is released when chemical bonds within the food are [broken:crack] the energy content of food is measured in [calories:weight] the amount of kinetic energy required to raise the temperature of 1ml of water one-degree food is [burned:burning] under controlled conditions breaking chemical bonds and releasing free energy the burning is chemically similar to the [breakdown:breaking] of food in cellular respiration all over the process occurs much more quickly and in a less controlled [fashion:style] during a connection calorimeter can measure the energy and food but cannot measure the digested energy of what we have.