NTDT200 Lecture Notes - Lecture 4: High Fructose Corn Syrup, Diverticular Disease, Corn Syrup
6 Jan 2018
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Document Summary
Major part of polysaccharides > major food source of energy: galactose. Naturally occurs in only small amounts as monosaccharide. Disaccharides: maltose = glucose + glucose, sucrose = glucose + fructose. Polysaccharides: glycogen: storage form of chos in animals (muscle and liver, minimal amounts in meats; none in plant foods, consists of 100s of glucose units. Polysaccharides: starches: cho storage form for plants, grains, legumes, potatoes, corn, peas. Polysaccharides: dietary fibers: structural part of plants > found in all plant foods. Soluble fiber: dissolve in water > form gels, fermented by colonic bacteria, appear to decrease blood cholesterol and glucose > protect against heart disease and dm. Insoluble fiber: do not dissolve in water or form gels, not easily fermented by colonic bacteria, promotes bowel movements, alleviates constipation and prevents diverticular disease. Digestion: stomach: stomach acid inactivates salivary amylase. 100s or 1000s of glucose molecules: dietary fiber delays gastric emptying.
