Complex carbohydrates are also known as oligosaccharides and polysaccharides. Some examples of complex carbohydrates are starches and dietary fiber. Starches consist primarily of long, interlocking chains of glucose or fructose units.
Examples of foods containing large amounts of starch are rice, wheat, corn and potatoes. Most starches can be digested and absorbed by the human body ("modified" starch is less digestible). Dietary fiber consists of non-digestible complex carbohydrates found in plants.
Dietary fiber is poorly broken down by human digestive enzymes. Well-known sources of dietary fiber include whole grains, dried peas and beans, fruits and vegetables.
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