natural gas & oil. Duke Energy operates a system of generating plants fueled by oil or natural gas, including combustion turbines, combined-cycle units and oil-fired units. Combustion turbines. Many of our combustion turbine units are used to supplement power supply during peak demand periods when electricity use is highest.
Carbohydrates are a type of macronutrient found in many foods and beverages. Most carbohydrates are naturally occurring in plant-based foods, such as grains. Food manufacturers also add carbohydrates to processed foods in the form of starch or added sugar.Common sources of naturally occurring carbohydrates include: 1  Fruits. 2  Vegetables.3  Milk. 4  Nuts. 5  Grains. 6  Seeds. 7  Legumes.ood manufacturers also add carbohydrates to processed foods in the form of starch or added sugar. Common sources of naturally occurring carbohydrates include: 1  Fruits. 2  Vegetables. 3  Milk. 4  Nuts. 5  Grains. 6  Seeds. 7  Legumes.
General names for carbohydrates include sugars, starches, saccharides, and polysaccharides. The term saccharide is derived from the Latin word sacchararum from the sweet taste of sugars. The simplest carbohydrates are monosaccharides (single sugar units) such as glucose, fructose and galactose.ugar. Sugar is sucrose, a carbohydrate found in every fruit and vegetable and is the major disaccharide (see below) in most diets. All green plants manufacture sucrose through photosynthesis, the process by which plants transform sunlight into their food and energy supply.