NUTR 100 Study Guide - Vitamin A, Mypyramid, Periodontitis
Document Summary
Composition of foods includes the six nutrient classes of water, carbohydrates, lipids, proteins, vitamins and minerals. Foods can also contain non-nutrients and other compounds, such as fibers, phytochemicals, pigments, additives, alcohols and others. Composition of the human body is made of chemicals similar to food. The nutrients: nutrients in foods and in the body. Chemical composition of nutrients includes both organic (those that contain carbon) and inorganic (those that do not contain carbon) compounds. Essential nutrients are those the body cannot make or cannot make in sufficient quantities to meet needs. (e. g. cholesterol) Energy is measured in calories (kilocalories, kcalories, kcal): internationally, food energy is measured in joules. The nutrients: energy-yielding nutrients: carbohydrate, fat and protein. This 450-gram breakfast delivers 500 kcal, for an energy density of 1. 1 (500 kcal/450 g = 1. 1 kcal/g) This 144-gram breakfast delivers 500 kcal, for an energy density of 3. 5 (500 kcal/144 g = 3. 5 kcal/g) The nutrients: energy-yielding nutrients: carbohydrate, fat and.
