Milling

Question 1

What invention enabled flour milling to be done on the industrial scale rather than having to be done locally?

Answer 1

Roller mill

Question 2

What were the two technical developments that have contributed most to the UK becoming largely self-sufficient in breadmaking wheat since the Second World War and how did they do it?

Answer 2

The Chorleywood Bread Process enabled bread to be made with flour containing 1% less protein

Semi-dwarf wheat is a shorter plant with a stronger stalk, which will not fall over in the wind or if the grain head gets heavy. This increased the yield of wheat

Question 3

What factors related to land use make food security an issue today?

Answer 3

Increased demand for food from growing economies

Increased use of land for growing fuel crops, crops that will not be directly eaten

Question 4

What are the objectives of milling?

Answer 4

• To separate bran and germ from the endosperm
• To reduce the particle size to that of flour
• To sell as much of the grain as possible as flour

Question 5

What do these 3 types of milling equipment do?

1. Sifter
2. Roller Mill
3. Purifier

Answer 5

1. Separates into different particle sizes.
2. Reduces particle size.
3. Separates by particle density and shape.

Question 6

When the output from a roller mill is sieved what do the largest particles consist of and what do the smallest particles consist of?

Answer 6

• Largest = bran

* Smallest = endosperm

Question 7

The output from a purifier that is bran with endosperm attached goes to what sort of milling equipment next?

Answer 7

Roller mills