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Food Preparation and Nutrition
AQA GCSE Food Preparation and Nutrition
Food Science
Functional and Chemical Properties
Raising Agents Properties
AQA GCSE Food Preparation and Nutrition · 8585
Raising Agents Properties
What you need to know
Understand the scientific principles of chemical, mechanical, steam, and biological raising agents during food preparation and cooking.
Describe how chemical raising agents (like baking powder, bicarbonate of soda, and self-raising flours) produce carbon dioxide.
Describe how mechanical raising methods (whisking, beating, folding, sieving, creaming, and rubbing in) incorporate air into a mixture.
Explain how steam acts as a raising agent when water in a moist mixture reaches boiling point.
Describe the working characteristics and functional properties of yeast as a biological raising agent.
Apply practical skills using chemical raising agents, such as self-raising flour and baking powder, in baking.
Demonstrate the use of steam as a raising agent in mixtures like choux pastry or batters.
Demonstrate the use of eggs to create a gas-in-liquid foam for dishes like whisked sponges or savoury roulades.
Demonstrate the use of yeast in practical bread making.
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Raising Agents Properties
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Previous subtopic
Fruit and Vegetable Properties
Next section: Food Safety
Microorganisms and Enzymes