NUTR100 Lecture Notes - Lecture 1: Food Storage, Triglyceride, Glycerol
13 Jun 2018
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Chapter 1: Food for health
Nutrition: studies the interactions between living organisms and the food they consume
- Energy is measured in kilocalories
- Essential nutrients must be supplied in the diet
- Previous concerns was obtaining all nutrients needed for good health, now it is
limiting consumption to prevent obesity
- Only in meat and alternatives Canadians get recommended intake
- Top three nutrition related deaths in Canada: heart disease, cancer, stroke
- Macronutrients:
o Energy yielding nutrients, includes carbohydrates, proteins, and fats
o Needed in large amounts each day
o Inludes ater, ut doesn’t proide energy
o Kcals per gram
▪ Carbohydrate = 4 kcal/gram
▪ Lipids = 9 kcal/gram
▪ Protein = 4 kcal/gram
▪ Alcohol = 7 kcal/gram
o 1kilocalorie = 4.18 kilojoules
o 4.18 kiljoules= 1 kilocalorie
o Capital c on Calorie means kilocalorie
o Carbohydrates made of sugar linked together
▪ Sugars(simplest) and starches (most complex)
o Lipids: concentrated form of energy, lightweight storage form
▪ Triglyceride: fatty acids and glycerol back bone
• Type of fat found in abundance in body
o Protein is made of amino acids linked together
▪ Growth, maintenance and repair of body
▪ Both plant and animal meat can provide all needed amino acids
▪ Amino group, carbon in middle with R group, carboxyl or acid group
at other end
- Micronutrients: provide no energy for the body bu are necessary for proper
functioning of the body
o Vitamins and minerals
o Important for good health but required in small amounts
o Canada allows fortified foods in which nutritents have been lost to be
replaced
- Water: lubricant, transport fluid, maintain body temp
- Body composiotion: Water 62%, 16% protein, 16% fat, 6% other substances
- Most of body weight is due to water, fat and protein
- Nutrients help form and maintain the body
- All reactions that occur in the body is called metabolism = homestasis
- Undernutrition is malnutrition caused by eating insufficient amounts of energy
providing foods
find more resources at oneclass.com
find more resources at oneclass.com
Document Summary
Nutrition: studies the interactions between living organisms and the food they consume. Essential nutrients must be supplied in the diet. Previous concerns was obtaining all nutrients needed for good health, now it is limiting consumption to prevent obesity. Only in meat and alternatives canadians get recommended intake. Top three nutrition related deaths in canada: heart disease, cancer, stroke. Macronutrients: energy yielding nutrients, includes carbohydrates, proteins, and fats, needed in large amounts each day. Micronutrients: provide no energy for the body bu are necessary for proper functioning of the body: vitamins and minerals. Important for good health but required in small amounts: canada allows fortified foods in which nutritents have been lost to be replaced. Water: lubricant, transport fluid, maintain body temp. Body composiotion: water 62%, 16% protein, 16% fat, 6% other substances. Most of body weight is due to water, fat and protein. Nutrients help form and maintain the body.
