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Polysaccharides

Meaning

Polysaccharides are a major class of complex carbohydrates that are high-molecular-weight polymers formed by long chains of monosaccharide, or simple sugar, units linked together by glycosidic bonds. These macromolecules perform essential functions in living organisms, primarily serving as energy storage compounds and structural components. In human nutritional science, this term encompasses starches, which are digestible energy sources, and dietary fibers, which are indigestible but vital for gastrointestinal health. Understanding their structure dictates their function and their impact on metabolic health.