SC115: Unit 3 Carbohydrates and Glycemic Index Deborah Zippel MS, RD, LD Kaplan Nutrition Adjunct Professor
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Agenda 1.Welcome and Tech Check 2.Unit 3 responsibilities 3.Tonight’s Seminar: Carbohydrates and Glycemic Index
Unit 3 Responsibilities (See Unit Home Tab and Course Syllabus for details) - Read chapter 4 - Discussion – Diabetes - Seminar – Carbohydrates - Assignment – Fiber paper Unit 3 assignments are due no later than 11:59 pm Tuesday.
Carbohydrates What are they?
What types of carbohydrates are there in the diet?
Simple carbohydrates Monosaccharides -Glucose -Fructose -Galactose Disaccharides -Maltose = glucose + glucose -Lactose = glucose _ galactose -Sucrose = glucose + fructose
Simple Carbohydrates (sugars) Single sugars (monosaccharides) are absorbed directly into the blood Disaccharides (2 sugars) must be split into monosaccharides before they can be absorbed
Complex Carbohydrates: Polysaccharides Starch and Glycogen Fiber -Insoluble and Soluble
Complex Carbohydrate Starch, Glycogen & Fiber
What is the role of carbohydrates in the body?
Cruise with Carbohydrates Primary energy source for muscles Only source of energy for THE BRAIN Helps maintain nerve tissues Must be present for fat metabolism
Energy Stores 154 lb.(70 kg) man Glycogen -Liver~ kcal -Muscle ~ kcal -Blood Protein 40,000 kcal Fat 140,000 kcal
Why Do We Need Carbohydrates The DRI committee recommends that 45% - 65% of daily calories come from carbohydrates Fats are not normally used as fuel by the brain and central nervous system -Glucose is the primary energy source for nerve cells Gram for gram carbohydrates contain fewer calories (4) than do dietary fats (9) Converting glucose into fat is metabolically costly
What food groups contain carbohydrates?
Learning Labels
Glycemic Index
Are alternative sweeteners safe?
Types of sweeteners Saccharin Acesulfame-K Sucralose Aspartame
Carbohydrate related disorders
Why to carbohydrates get such a bad rap in the media?
What are the consequences of eating low-carb, high-fat, high-protein diets?
Questions and Sleep well