RAISING AGENTS

Raising agents

A raising agent is a substance that produces gas in a mixture, causing it to rise and become light in texture.

Self-raising flour

Self-raising flour is soft cake flour that already contains a standard amount of raising agent.

Explain how raising agents work in food products.

Raising agents introduce gases into a mixture. When heated, the gases expand and make the mixture rise, producing a light and airy texture.

What is a biological raising agent?

A biological raising agent is a living organism, such as yeast, that produces carbon dioxide through fermentation.

What is a chemical raising agent?

A chemical raising agent produces carbon dioxide through a chemical reaction, such as baking powder or bicarbonate of soda.

What is a mechanical raising agent?

A mechanical raising agent introduces air into a mixture through physical methods such as whisking, creaming, or sieving.

List the raising agents used in making cakes and dough batters.

The raising agents used are air, steam, baking powder, bicarbonate of soda, and yeast.

The chemical raising agents used in batters

The chemical raising agents used in batters are baking powder and bicarbonate of soda.

The mechanical methods that can be used in mixtures

The mechanical methods are sieving, creaming, whisking, folding, and rubbing-in.

Define the term fermentation.

Fermentation is a series of chemical reactions in which yeast produces carbon dioxide gas and alcohol.

Explain what is yeast.

Yeast is a microscopic living fungus used in baking to produce carbon dioxide gas that helps dough rise.

Identify different types of yeast

The main types of yeast are dried yeast and fresh yeast.

State the importance of food for yeast fermentation

Food, such as sugar or flour, provides energy for the yeast to grow and produce carbon dioxide.

State the importance of warmth for yeast fermentation

Warmth provides the correct temperature for yeast activity and fermentation to take place.

State the importance of moisture for yeast fermentation

Moisture activates the yeast and allows fermentation to occur.