Food Calories
Food Calories - How to Measure Food Calories
Executive Summary about Food Calories by Wayne Mcgregor
We hear about them everyday: food calories. Food has them. We usually eat more of them than are good for us. We want to burn them as rapidly as possible to look our best. But what are they? A food calorie is the amount of energy required to raise the temperature of one gram of water (one milliliter) by one degree Celsius. We also use food calories to measure the amount of energy we get from the food that we eat.
Different foods contain varying numbers of food calories. One gram of protein or carbohydrate has 4 calories. The same amount of fat has 9 food calories. To further compound matters, there are empty and nutritional calories. A cup of orange soda has fewer calories than one cup of orange juice, but its calories are empty, they have no real nutritional value.
Food Calories have been scientifically measured. You can determine this for yourself by burning a cashew, for example, underneath a container of 100ml of water. Record the weight of the cashew before (W1) and after (W2) burning. The difference (W1-W2=W3) is the amount of energy expended. Next, record the temperature of the water when the cashew is lit (T1) and again when it has burned out (T2). The amount of the remaining cashew (W3) and the temperature increase (T2-T1=T3) will be equal. Unless you have constant access to a calculator, figuring out the caloric value of foods for yourself is going to be difficult and time consuming.
- food calorie counter
Fortunately, we don’t have to go to this much trouble. By law, the manufacturers of foods are required to place nutrition panels on the packaging to tell you how many food calories are in one serving size. You may see caloric values on the menus of some restaurants and fast food stores. Another way is to use the Fat and Calorie Calculator from FoodNetwork.Com. It will tell you the caloric value of foods and how this changes by the way food is prepared.
Let’s look at one food item, a chicken drumstick (1 pound, ready-to-cook):
- Raw (meat and skin): 70 calories, 36 being from fat.
- Roasted: 66 and 27.
- Stewed: 69 and 36.
- Flour fried: 71 and 36.
- Batter fried: 115 and 63.
- Raw (meat only): 44 calories, 9 being from fat.
- Roasted: 44 and 9.
- Stewed: 47 and 18.
- Fried: 48 and 18.
- Breaded and fried (two pieces from a Fast Food Chain): 430 and 244
You can see three things quite easily. Frying, leaving the skin on, and coating with a batter increases the total number of calories. Chicken from a fast food chain has 6 times the food calories of raw chicken consisting of meat and skin. We should, therefore, prepare our foods by baking, roasting or stewing them at home to get the most nutritional calories and the least empty food calories.
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