Eggs Flashcards
What are the nutritive value groups of eggs?
Protein - HBV, growth & repair of body cells.
Fat - Saturated, heat & energy (1g=9kcal).
Carbs - 0%, Serve with potatoes, pasta or rice.
Vit D - Assists calcium absorption.
Vit A - Makes rhodopsin, preventing night blindness.
Who should eat eggs?
Children: should eat eggs as they contain calcium for strong bones & teeth.
Ovo-vegetarians: They have HBV protein for growth & repair.
People who are trying to lose weight: Eggs are low in calories & keep you full for longer.
What is the cost benefit of eggs?
Eggs are cheaper than meat and provide excellent protein.
What are some cooking uses of eggs?
Many uses in cooking meals: Meringues, omelette, quiche.
What are the cooking methods for eggs?
Wide variety of cooking methods: Frying, baking, poaching, & boiling.
What are the properties of eggs?
Foam formation, coagulation, emulsification.
What is foam formation in eggs?
When egg whites are whisked, protein chains unravel & air bubbles are trapped, creating temporary foam that must be cooked to become permanent.
What is coagulation in cooking eggs?
Protein coagulates during cooking, causing protein chains to unravel, denature & stick together. Egg whites coagulate at 60-65°C.
What is emulsification in eggs?
Egg yolk contains lecithin, allowing 2 immiscible liquids to combine, such as water & oil.
What is a temporary emulsion?
This occurs when oil and vinegar are mixed without lecithin, resulting in separation after a short period.
What are culinary uses of eggs?
To bind ingredients (burgers), as an emulsifier (mayonnaise), as a glaze (scones), to coat (nuggets), and as food (fried, boiled, poached, scrambled).
What are the effects of heat on eggs?
Protein coagulates, loss of vitamin B group, egg white changes from clear to white, and salmonella is destroyed.
What are the rules for buying eggs?
No cracks, be heavy for size, check expiry, and look for Bord Bia Q mark.
How should eggs be stored?
Store away from strong-smelling foods and with the pointed end facing downwards.
What are organic eggs?
Eggs from hens not treated with growth hormones, antibiotics, or artificial pesticides.
What are free range eggs?
Eggs from hens allowed to roam outside during the day and housed at night.
What are barn eggs?
Eggs from hens kept indoors in a large barn or shed.
What are caged eggs?
Eggs from hens kept in small cages (less than A4-sized floor area).
What must egg packaging include?
Expiry date, farming method, ID of farm, and no misleading information.
What is the Egg Quality Assurance Scheme (EQAS)?
An EU approved salmonella plan ensuring the health of Irish laying stock is maintained.
What is lecithin?
A natural emulsifier found in egg yolks that allows 2 immiscible liquids to join together.
What happens to stale eggs?
Stale eggs will float.
