Cereals Flashcards

1
Q

Structure of cereal

A

Germ
Outerhusk
Endosperm
Hair/Beard
Bran layers
Scutellum
Aleurone layer

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2
Q

Buying and storing cereals

A

Packaging secure
Date stamp
Cool dry area
When opened, store in an airtight container and use within recommended time
Wholegrain cereals such as brown flour deteriorate faster because of the fat content in the germ

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3
Q

Types of Wheat (list)

A

Spring
Winter

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4
Q

Spring wheat

A

Sown in March and harvested in September
Grown in climates with cold winters and hot summers (North America)
Fast growing wheat
High gluten content

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5
Q

Winter wheat

A

Sown in autumn and harvested in late summer
Suitable for climates with mild winters (ireland)
Slower growth
Lower gluten content

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6
Q

Plain flour

A

A blend of spring and winter wheat

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7
Q

Flour milling steps

A

Cleaning
Conditioning
Blending
Break rolling
Sifting and purifying

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8
Q

Acronym to remember steps for flour milling

A

CCBBS

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9
Q

Cleaning

A

A series of sieves remove any stones straw soil and dust from the wheat grains before washing
Wheat grains are scoured to remove the beard

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10
Q

Conditioning

A

This process ensures that the grains have the correct moisture content making it easier to mill
Water may be added to make it easier to roll and blend

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11
Q

Blending

A

Involves mixing different wheats together to form a grist depending on the four type required

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12
Q

Break rolling

A

Rigid rollers revolve at high speed in opposite directions, peeling open the grain and releasing the endosperm without breaking the bran layer into tiny fragments
Wholegrain flour has been produced at this stage

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13
Q

Sifting and purifying

A

The opened grain passes through a series of rotating sirves, which seperate the grain into bran, germ and rough endosperm.
Air is blown through the grain, separating the lighter bran from the heavier endosperm
They are packaged and sold separately

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14
Q

Packing flour

A

Flour is weighed (1/2kg)
Packed in a strong paper or cardboard container

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15
Q

Labelling includes

A

Type of flour
Nutrional information
Storage instructions

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16
Q

Types of flours

A

Wholegrain/meal
Brown/wheaten meal
White/plain/cream
Self raising
Strong
Gluten free

17
Q

Effects of processing on flour

A

Wholegrain = more protein than white as the germ and aleurone layer are removed for white
White = less fibre than wholegrain
White = more starch than wholegrain
White = no germ, no fat (longer shelf life)

18
Q

Effect of heat on cereals

A

Moist heat = Starch grains swell and burst and absorb liquid
Dry heat = starch grains swell and burst and absorb fat
Cellulose is softened
Starch becomes digestible
Protein coagulates in dry heat (setting bread)
Dextrinisation
Caramelisation
Loss of some B group

19
Q

Cereal products

A

Oats
Maize
Barley
Rye
Wheat

20
Q

Varieties of rice

A

Long grain (basmati)
Short grain (Carolina)
Medium grain (arborio)
Brown

21
Q

Seeds in the diet

A

Omega fatty acids
Fibre
Vitamin É

22
Q

Protein

A

LBV
lysine, threonine in reduced amounts
Gluten (wheat and rye) in endosperm
Growth and repair

23
Q

Fat

A

Germ
Polyunsaturated fat
Essential fatty acids (linolenic, linoleic, archiodonic)
Necessary for the formation of cell membranes and therefore essential for growth

24
Q

Carbohydrates

A

Principle nutrient in cereals
Starch (endosperm)
Cellulose (fibre, peristalsis)
Cellulose is removed in production of white flour

25
Q

Vitamins

A

B1
B2
Niacin
Essential for the release of energy from food
Processing removes vitamins
Germ: É

26
Q

Minerals

A

Calcium - bones
Iron - rbc
Phosphorus

27
Q

Extraction rate

A

The % of the grain used in producing flour; which effects the nutritive value