PUBH 1517 - (Chapter 4) Carbohydrates 1

PUBH 1517 - (Chapter 4) Carbohydrates 1 - Nutrition:...

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Nutrition: Concepts and Controversies, 8 ed Chapter 4 The Carbohydrates
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Monosaccharraides to Disaccharides
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Glucose to Polysaccharides
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Dietary Fiber Definition: substances that cannot be broken down by human digestive enzymes Classification for dietary purposes soluble (in water) insoluble Recommended intake: 25-30g/day Average U.S. intake: 14-15g/day
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Soluble Fiber Types : gums, mucilages, pectins, psyllium, some hemicellulose Major food sources : barley, fruits, legumes, oats, oat bran, rye, seeds, vegetables Possible Health Effects : helps lower blood cholesterol slows glucose absorption slows transit thru upper GI t holds moisture partly fermentable
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Fiber and Cholesterol
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Carrageenan Polysaccharide extracted from seaweed initially assumed harmless Form of dietary fiber Food additive used to stabilize food mixtures add body to infant formulas, milk pudding, sour cream, ice cream highly active polyanionic electrolyte that can cause breakdown of mucosal integrity guinea pigs & rabbits developed intestinal ulcers at levels less than 1%
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PUBH 1517 - (Chapter 4) Carbohydrates 1 - Nutrition:...

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