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Eggs are a good choice as part of a healthy, balanced diet - Leaving Cert Home Economics - Question 2 - 2021
Question 2
Eggs are a good choice as part of a healthy, balanced diet. (a) Discuss the nutritional significance of eggs in the diet. (b) Describe how eggs work as an emulsifi... show full transcript
Worked Solution & Example Answer:Eggs are a good choice as part of a healthy, balanced diet - Leaving Cert Home Economics - Question 2 - 2021
Step 1
Discuss the nutritional significance of eggs in the diet.
Answer
Eggs are highly nutritious and play a vital role in a balanced diet. They are a rich source of:
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Proteins: Eggs contain around 13% protein, which provides essential amino acids needed for growth and repair of body tissues. The high biological value (HBV) of egg protein makes it an important alternative source in vegetarian diets.
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Vitamins: Eggs are rich in vitamins such as A, D, E, and B-complex. Vitamin A is essential for vision, while Vitamin D helps in calcium absorption, crucial for bone health. B vitamins, including B12, are needed for energy production and maintaining healthy nerve cells.
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Minerals: Key minerals found in eggs include iron, which supports blood health, phosphorus, which aids in bone maintenance, and selenium, an antioxidant that helps protect cells from damage.
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Fats: Eggs contain approximately 11% fat, predominantly unsaturated fats, which are beneficial to heart health. They also provide cholesterol, necessary for hormone production.
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Water: Comprising about 75% of an egg, water supports hydration and helps maintain overall body function.
The overall nutrient profile of eggs makes them a valuable inclusion in daily diets, supporting various bodily functions.
Step 2
Describe how eggs work as an emulsifier in food production. Refer to one culinary application.
Answer
In food production, eggs act as an emulsifier due to the presence of lecithin in the yolk. Lecithin is a phospholipid that allows two immiscible liquids, such as oil and water, to blend seamlessly. When whisked together, the proteins in egg yolks stabilize the emulsion, preventing separation.
Culinary Application: A classic example is mayonnaise, where egg yolks are combined with oil and vinegar. The lecithin allows these ingredients to mix together smoothly, creating a stable emulsion that provides the rich, creamy texture characteristic of the condiment.
Step 3
Evaluate the role of food labelling as a source of consumer information when buying eggs.
Answer
Food labeling plays an essential role in informing consumers about the products they purchase, particularly eggs. Key components of egg labeling include:
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Product Information: Labelling provides details regarding the origin of the eggs, whether they are organic or free-range, and class/type. This helps consumers make informed choices based on their preferences and dietary needs.
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Traceability: Labelling includes codes that enable traceability. This information allows consumers to trace the eggs back to their source, ensuring quality and safety standards are met.
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Nutritional Information: Labels often display nutritional content, which assists consumers in understanding the health benefits and contributions of eggs in their diets.
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Regulatory Compliance: Effective labeling ensures conformity with food safety regulations, which safeguard public health.
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Consumer Rights: Essential information regarding allergens, storage instructions, and expiration dates is provided, empowering consumers to make safe choices.
In conclusion, food labeling is crucial as it enhances transparency, aids in decision-making, and helps consumers make informed dietary choices concerning eggs.