CCEA GCSE Food and Nutrition: The science of food overview
An overview of the science of food module of CCEA GCSE Home Economics: Food and Nutrition, mapping the functional and chemical properties of ingredients, cooking and heat transfer, food spoilage, food preservation, and food safety and hygiene, and how they are examined on Unit 1.
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The third module of CCEA GCSE Home Economics: Food and Nutrition is the science behind cooking and food safety: what ingredients do, how heat works, why food goes off, how to make it last, and how to keep it safe. It sits in Unit 1 Food and Nutrition and underpins the practical work. This page maps the topics and links to a focused answer page for each.
What this module covers
- Functions of ingredients
- The functional and chemical properties such as gelatinisation, coagulation, denaturation, aeration, shortening, emulsification, dextrinisation and caramelisation, with example dishes. Start with Functions of ingredients.
- Cooking and heat transfer
- Why we cook, the three methods of heat transfer (conduction, convection, radiation), the main cooking methods, and the effects of cooking on appearance, texture and nutrients. See Cooking and heat transfer.
- Food spoilage
- The micro-organisms that spoil food (bacteria, yeasts, moulds), the conditions they need, enzymic browning, and the signs of spoilage. See Food spoilage.
- Food preservation
- The principle of preservation and the main methods (freezing, chilling, canning, drying, salting, sugar and pickling) and how each works. See Food preservation.
- Food safety and hygiene
- Personal and kitchen hygiene, cross-contamination, temperature control and the danger zone, food-poisoning bacteria, safe storage and date marks. See Food safety and hygiene.
How it is examined
These topics appear on Unit 1, worth 50% of the GCSE, and support Unit 2. Expect questions defining and giving examples of functional properties, explaining heat transfer, explaining spoilage and preservation in terms of the conditions micro-organisms need, and practical food-safety questions on cross-contamination and temperature control.
How to study it
Tie each functional property to an example dish. Learn the three heat-transfer methods with examples. Master the conditions micro-organisms need, then use them to explain both spoilage and preservation. Memorise the danger-zone figures and the date marks. Then practise applying it, and finish with the module quiz.