Food such as rice, cereal, pasta, potatoes and bread contain high amounts of starchy carbohydrates, according to Great Britain's National Health Service. Whole grains, vegetables, fruits and beans are carbohydrates that contain high amounts of fiber, according to WebMD. Carbohydrates are needed by the human body for energy production and digestion.
Foods high in carbohydrates per serving include russet potatoes, bagels, brown rice, pasta, oatmeal, bran muffins, raisins, lima beans and garbanzo beans, according to a chart from the Massachusetts Institute of Technology (MIT). All of these foods have more than 20 available grams of carbohydrates per serving.
Other foods high in carbohydrates include stuffing, raisin bran, apples, oranges, bananas, grapes, carrots, sweet corn, peas and lentils. MIT states that various carbohydrates have different glycemic effects on the human body depending upon how the carbohydrates are utilized in the body.
Starch and fiber are two complex carbohydrates necessary for nutrition. The Palo Alto Medical Foundation (PAMF) states that polysaccharides such as fiber aid in digestion and starches produce energy. Fiber slows the digestion of foods, prevents large changes in blood sugar, lowers cholesterol and promotes intestinal health. The PAMF warns consumers about eating refined grains that have been stripped of their fiber content. The more a food is refined, the less fiber the food contains.