HLSC 2P91 Lecture Notes - Lecture 3: Ribose, Health Canada, Lactose Intolerance
5 Feb 2016
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Document Summary
Low carb diets increased in risk in mortality. Convert sunlight into a macronutrient through photosynthesis. Sweet sugar/fruit sugar (found naturally in veggies/fruit) Same chemical formula as glucose but structurally different (pentagon shape) Same chemical composition as glucose but with a small structural difference. Break up into 2 mono-saccharides by hydrolysis. Condensation form a bond between 2 compounds, water released. Hydrolysis bond broken, water required for this reaction. Doesn"t generally occur by itself in foods (by-product) Higher in human breast milk than cow milk. Beta bond difficult and requires lactase enzyme. More than 2 saccharides strung together (raffinose and stachyose) Storage form in plants (grains, legumes, tubers) Major source of digestible cho in diet (some starches are not digestible-resistant starch) Important role in carb storage in body (muscle, liver) Dietary fibre non-digestible part of plants (grains, rice, seeds, legumes, fruits) Functional fibre non-digestible carbs extracted from plants and added to food (cellulose, guar gum, pectin, psyllium)
