How does companys tell how much calories are in there product?!
How does companys tell how much calories are in there product?
Answers:
There are food labs that can do this. The University where I live does this. I have a friend who works there.
They employ a technique called calorimetry. "The heat energy from the combustion of the food will be transferred to a measured quantity of water. By measuring the temperature change of the water, you will be able to determine how much energy was released per gram of food burned. It is well documented that in order to make the temperature of one gram of water rise by 1 Co, one calorie of heat must be absorbed. This quantity of energy is called a calorie. You will determine how many calories of heat are given off per gram of food reacted."
Source(s):
http://www.algebralab.org/activities/act...