First, nutrient density is defined as a ratio of nutrient content (in grams) to the total energy content (in kilocalories or joules). Nutrient-dense food is opposite to energy-dense food (also called "empty calorie" food). According to the Dietary Guidelines for Americans 2005, nutrient-dense foods are those foods that provide substantial amounts of vitamins and minerals and relatively few calories. For example, fruit and vegetables are considered nutrient-dense food, while products containing added sugars, saturated fats, and alcohol are considered nutrient-poor food.
Second, nutrient density is defined as a ratio of food energy from carbohydrate, protein or fat to the total food energy. To calculate nutrient density (in percent), divide the number of calories or joules from one particular nutrient by the total number of calories or joules in the given food and then multiply this by 100.
Third, nutrient density is understood as the ratio of the nutrient composition of a given food to the nutrient requirements of the human body. Therefore, a nutrient-dense food is the food that delivers a complete nutritional package.
Nutrient density and dairy foods: the USDA Dietary Guidelines Advisory Committee has expressed concern that many Americans are consuming excess calories, but not meeting nutritional requirements. A look at some of the advantages and challenges in the development of the concept and possible labeling of nutrient-dense foods is provided.(ingredient challenges)(Reprint)
Aug 01, 2008; [ILLUSTRATION OMITTED] In 2005, the USDA Dietary Guidelines Advisory Committee (DGAC) expressed concern that many Americans are...
Influence of lighting schedule and nutrient density in broiler chickens: effect on growth performance, carcass traits and meat quality.(Report)
Nov 01, 2010; INTRODUCTION Broiler chickens have usually been kept on a continuous or nearly continuous lighting (23 L:1 D, CL) schedule so as...