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Lecture 3c- 23 Sept. 2013 CARBOHYDRATES I II. Overview of lecture 3c Carbohydrate content of foods -impact of diet on health and disease Functional foods in the management of health and disease Nutraceuticals in the management of health and disease
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Lecture 3c- 23 Sept. 2013 CARBOHYDRATES III
Overview of lecture 3c • Carbohydrate content of foods • -impact of diet on health and disease • Functional foods in the management of health and disease • Nutraceuticals in the management of health and disease • Next lecture-fibre -carbohydrates in health and disease • -WHATS NEW IN CARBOHYDRATE • RESEARCH
INTRODUCTION • Different “regular” foods have differing levels of a variety of carbohydrates-can affect bodily function • Functional foods can manage carbohydrates in the body and can affect bodily function • Nutraceuticals can manage carbohydrates in the body and can affect bodily function
Foods Glycaemic index • grains (includes breads and pastas) • breads -wheat higher than rye • pastas - lower than breads • rice and pasta about the same as each other
Foods continued-glycaemic index continued Vegetables and fruits on average Glycemic index potato > yam legumes > root veggies fruits ~ legumes
Foods continued Glycemic index continued milk products ~ fruits on average why? lactose=fructose in glycemic index
Foods continued Glycemic index continued meats -very low glycemic index - but do not gorge gorge
Functional foods Health Canada definition A functional food is similar in appearance to, or may be, a conventional food that is consumed as part of a usual diet, and is demonstrated to have physiological benefits and/or reduce the risk of chronic disease beyond basic nutritional functions, i.e. they contain bioactive compound.
Functional food examples • fish • flax • canola • chicory seed-contains an oligosaccharide
Functional food examples • http://www.foodfacts.com/NutritionFacts/Bread-and-Flour-Products/Presidents-Choice-Blue-Menu-Multigrain-Flax-Loaf-Bread--oz/37196 • http://www.countryharvest.com/en/product/sunflower-flax-breads/
Fish increase insulin sensitivity? -perhaps due to w3 fatty acids
Canola omega 3 fatty acids -may increase insulin sensitivity
Flax • omega 3 fatty acids may increase insulin sensitivity
Chicory seed • example of a resistant carbohydrate • affect colonic pH and stool bulking ol BULKING
Nutraceuticals Health Canada definition A nutraceutical is a product isolated or purified from foods that is generally sold in medicinal forms not usually associated with foods. A nutraceutical is demonstrated to have a physiological benefit or provide protection against chronic disease.
Nutraceutical examples • fish oil • flax lignan complex • flax oil • canola oil • evening primrose oil • hemp oil • chondroitin sulphate • glucosamine
Fish oil omega 3 fatty acids – increased insulin sensitivity in some studies INCREASE?
Flax lignan complex Secoisolariciresinol diglucoside molecule metabolites decrease blood plasma glucose concentrations perhaps via insulin sensitivity increase?
Flax oil Omega 3 fatty acid may increase insulin sensitivity?
Canola oil Omega 3 fatty acid may insulin sensitivity?
Evening primrose oil -omega 6 fatty acids -reduces glucose impact on nerves in diabetes (improves nerve transmission speed)
Hemp oil • mix of omega 3 and omega 6 fatty acids • speculation-effects as above with omega 3 and omega 6 fatty acids
Chondroitin sulphate polysaccharide -found in joints-cartilage -reduced in arthritis
Glucosamine -polysaccharide linked to nitrogen group -found in cartilage in joints -reduced in arthritis