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Option B: Food Science
Food and diet…read more

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Specification objectives
Recall the sources and roles of nutrients
required in a balanced diet including
carbohydrates, fats, proteins, vitamins,
mineral ions, dietary fibre and water.
Understand the nutritional requirements
with reference to energy, total fat,
polyunsaturated and saturated fat, dietary
fibre, sodium and sugars.…read more

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What is food?
"Anything which when taken into the body,
serves to nourish or build up the tissues or to
supply body heat; aliment; nutriment" ?
"Substances taken in by mouth which maintain
life and growth, i.e. supply energy and build or
repair tissue"
"What one takes into the system to maintain life
and growth, and to supply waste; aliment,
nourishment, victuals" ?…read more

Slide 4

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What is Food?
"....Only those substances which, when
eaten and absorbed by the body,
produce energy, promote the growth
and repair of tissues or regulate these
processes. The chemical components
of food which perform these functions
are called nutrients..."…read more

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Nutritional values
Food Energy Protein Carbohydrate Fat Sodium Calcuim
Milk 272 KJ 3.3 g 4.7 g 3.8 g 0g 203 mg
bread 990 KJ 8.8 g 38.1 g 2.7 g 0g 23 mg
cheese 1680 KJ 26 g 0g 34 g 0g 800 g
Chicken 508 KJ 21 g 0g 4g 0g 10 mg
Eggs 612 KJ 12.3 g 0g 10.9 g 140 mg 52 mg
High energy density High nutrient density…read more

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Balanced diet
Should contain adequate quantities of all the
nutrients needed for growth and
Should maintain a high nutrient density so
that all the essential nutrients are included,
but keep the energy density low.
Should satisfy the energy requirements for
the level of activity undertaken.…read more

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