Food Composition
21 important questions on Food Composition
What are three Food components?
- Marco-nutrients
- Micro-nutrients
- Non-nutrients
What are 4 components of marco-nutriens?
- Protein
- Fat
- Carbohydrates
- water
What are the 2 components of micro-nutrients ?
- Vitamins
- Minerals
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What are the 3 components of non-nutrients?
- Dietary fibre
- oligosaccharides
- secondary plant metabolites
What is function op Proteins?
- Growth of new cells such as skin, hair and blood
- Repair of damaged cells
- Production of heat and energy
- Manufacture of important body chemicals such as enzymes, hormones and antibodies
What are high protein foods?
What structure give protein?
- Give structure to the body
- Building block are amino acids
What is the protein structure?
- H brides, s-s bridges, non covalent bond
- Different structure: primary, secondary, tertiary, quaternary
What enzymatic browning?
- By cutting oxygen is introduced into plant tissue
- Oxidation catalysed by polyphenol oxidase enzymes
- Solutions
- Lemon juice
- Heating
- Coating
What is the function of Fat?
- Layer of fat under the skin insulates the body
- Protection of delicate organs with layer of fat
- Provides the body with heat and energy
- Source of the fat-soluble vitamins
What is function of Carbohydrates (plant sources)?
- Provide the body with heat and energy
- Fiber stimulates moment of food through intestine
- Foods rich in fiber rich and starch provide "full feeling"
What are 6 minerals and there function?
- Calcium: Formation of health bones and teeth
- Sodium: Regulation of water balance in blood
- Potassium: Growth of lean tissue
- Phosphorus: Combines with calcium
- Iron: Foramtion of heamoglobin in red blood celss
- Iodine: controls metabolism
Which vitamins do find in water?
- B1: Thiamine: Essential for release of energy from carbohydrates
- B2
- B3
- B6
- B12: Essential for formation of red blood cells
- C: for health skin gums and blood vessels, iron absorpiton
What is Nutrient profiling?
What is the goal of Nutrient profiling?
- Problem: diets high in calories but low in nutrients
- To guide better food choices and more healthful diets
- Each food is assigned a unique score that best reflects its overall nutrient quality
What energy density ?
What is nutrient density?
- System is based on nutrients, not based on any physiological consequence of nutrition
- Analyzing whole diet
- Western orientation, needs to be evaluated over time
Difference between macro, micro and non-nutrients ?
What is basic structure protein?
What is basis structure of water?
What basic structure of Carbohydrates?
The question on the page originate from the summary of the following study material:
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