Food Tech - Raising Agents

Question 1

3 gases that make mixture rise

Answer 1

1. air (mixture of gas)
2. C02
3. steam (water as gas)

Question 2

3 ways to add raising agents

Answer 2

1. mechanical
2. chemical
3. biological

Question 3

mechanical - raising agent method

Answer 3

• manually adding air
  eg. sieving, whisking, folding, rolling

Question 4

chemical - raising agent method

Answer 4

• adding a chemical which causes a reaction to produce C02
• C02 gas will expand and push mixture up
  eg. baking powder & bicarbonate of soda

Question 5

biological - raising agent method

Answer 5

• microorganisms to produces C02 gas
  eg. yeast to ferment (proofing)