Nutritional energy

Nutritional energy values are usually measured in kilocalories (kcal or simply calories). One kilocalorie represents the amount of heat required to raise the temperature of 1 kg of water by 1°C at room temperature. In the metric system, the energy value is expressed in joules (J), with 1 kcal being equal to 4.184 kilojoules (kJ). 

Nestle Boost (nestle-nutrition.com)—superfruit flavored products (strawberry, raspberry) sold as a nutritional energy drink fortified with an impressive array of added nutrients... 

In discussions of metabolism and nutrition, energy is often expressed in units of calories. Calorie in this context really means kilocalorie (kcal). Energy is also expressed in joules. One kilocalorie equals 4.18 kilojoules (kJ). Physicians tend to use units of calories, in part because that is what their patients use and understand. 

Hocman G (1988) Prevention of cancer. Restriction of nutritional energy intake (joules). Comp Biochem Physiol 91 A 209-220... 

A candy bar contains 225 Cal of nutritional energy. How many joules does it contain ... 

An adult eats food whose nutritional energy totals approximately 2.2 X 10 Cal per day. The adult bums 2.0 X 10 Cal per day. How much excess nutritional energy, in kilojoules, does the adult consume per day If 1 lb of fat is stored by the body for each 14.6 X 10 kj of excess nutritional energy consumed, how long will it take this person to gain 1 lb ... 

Various categories of sweetener may be distinguished, e.g. nutritive (energy producing) and non-nutritive as well as natural and synthetic. If a nutritive sweetener is intensely sweet the amount of energy derived from it will, in fact, be negligible. 

The starch found in amyloplasts forms an important source of nutritional energy in the human diet. A high proportion of the world s food energy is in the form of starch that is obtained from cultivated plants (see Chapter 1). 

The simplest nutritional role of fats in the diet is that of energy supply. There are differences between members of the same class of food materials, but the accepted convention attributes a value of 9 kcal (37.7 kJ) of energy per gram of fat, and 4 kcal (16.7 kJ) of energy per gram of all carbohydrates and proteins. This is a serious consideration in generating weight loss diets. 

Fa.ts nd Oils. Eats and oils from rendering animal and fish offal and vegetable oilseeds provide nutritional by-products used as a source of energy, unsaturated fatty acids, and palatabiHty enhancement. Eats influence the texture in finished pet foods. The use and price of the various melting point fats is deterrnined by the type and appearance of the desired finished food appearance. 

Plants, in contrast to animals, have the ability to convert carbon dioxide from the atmosphere and inorganic components of the earth direcdy into high energy carbohydrates (qv), fats, and proteins (qv). These plant materials are absolutely essential to human nutrition as well as to the nutrition of other animal species. Thus consumption of plant matter, either directly or through a food chain, is essential to animal life and humans are totally dependent on agricultural endeavors, ie, the culture and harvesting of plant matter. 

Horton, E. S., and Terjung, R. L., eds. 1988. Exercise, Nutrition and Energy Metabolism. New York Macmillan. 

A 12-oz can of most colas has about 120 nutritional calories (1 nutritional calorie = 1 kilocalorie). Approximately how many minutes of walking are required to bum up as energy foe calories taken in after drinking a can of cola (Walking uses up about 250 kcal/h.)... 

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