NUTR SCI 132 Lecture Notes - Lecture 4: Dextrin, Guar Gum, Constipation
8 Feb 2018
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Document Summary
Starch, biggest source of calories, 3000-4000 glucose units long. Anything that ends in -ose is a carbohydrate. As we expose starch to amylase, it gets shorter and shorter. The shorter they are, the sweeter they get- sometimes used as a sweetener. Intensity in exercise cannot be high without glycogen. Also a glucose polymer, like starch, chemical bonds holding the glucose together are a different kind. Other than lactose, carbohydrates are found mostly in plants. Whole grains (3 parts- germ (vitamins and minerals), endosperm (energy source- protein and starch), bran layer (vitamins, minerals and all fiber)) Whole wheat flour, bread, etc. has all these parts. White bread and flour removes bran and germ, removes many. White bread and flour removes bran and germ, removes many vitamins and minerals and fiber. Sometimes have problems bc we do not produce enough of the enzyme. Passes into large intestine undigested, metabolic products are irritating to the large intestine.
