BIO 111 Lecture Notes - Lecture 2: High Fructose Corn Syrup, Tunxis Community College, Corn Starch
6 Jan 2021
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Simple sugars -- limit (added) sugars to 10% - upper limit 25% of calories. Notice that glucose and galactose have a similar chemical structure with the exception of the hydroxyl groups ( oh) Which face in opposite directions and that fructose has a 5-sided ring structure, whereas glucose and galactose have 6-sided ring structures. Disaccharides: consist of two monosaccharides bonded together. Notice that each disaccharide has at least 1 glucose molecule. Sucrose: fructose + glucose lactose: galactose + glucose. Names you"ll see listed on the ingredients lists of food products or used in recipes for cooking fructose. Sucrose (or table sugar) - 50 glucose:50 fructose. Comes in brown, raw, white (dissolved, bleached, re-crystallized) Fructose [mainly fruit and high fructose corn syrup (hfcs)] 45 glucose: 55. Problem is that is easier to consume excess energy from liquids than solids. Corn syrup made by adding enzymes to corn that convert corn starch to sugar.
