A Level Nutrition and Food Science Eduqas

This subject is broken down into 25 topics in 4 modules:

  1. Meeting the Nutritional Needs of Specific Groups 7 topics
  2. Ensuring Food Is Safe to Eat 6 topics
  3. Experimenting to Solve Food Production Problems 4 topics
  4. Current Issues in Food Science and Nutrition (Optional) 8 topics
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  • 4
    modules
  • 25
    topics
  • 9,868
    words of revision content
  • 1+
    hours of audio lessons

This page was last modified on 28 September 2024.

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Nutrition and Food Science

Meeting the Nutritional Needs of Specific Groups

Nutrients and their function

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Nutrients and their function

Macronutrients

- Carbohydrates: Primary source of energy, stores energy, helps in digestion, and helps to control weight. - Proteins: Essential for growth and repair of body tissues, helps to produce enzymes, hormones, and antibodies. They can also be used for energy in the absence of carbohydrates.
- Fats: Provide the highest energy content per gram, aids nutrient absorption, body insulation, padding for organs, and contributes to cell health.

Micronutrients

- Vitamins: Facilitate numerous metabolic processes. Different vitamins have specific roles including boosting immunity (Vitamin C), promoting healthy vision (Vitamin A), and aiding in calcium absorption (Vitamin D). - Minerals: Are equally vital for high functioning bodily systems such as the nervous system (sodium), bones and teeth formation (calcium), and red blood cell formation (iron). - Fibre: Known as indigestible carbohydrates, they aid in maintaining bowel health, controlling blood sugar levels, managing weight, and reducing cholesterol levels.

Macronutrient Specifics for Certain Groups

- Pregnant Women: Require an increased intake of protein, certain vitamins and minerals, and extra calories for energy. - Children: Need high protein levels for growth and development, fats for energy and to assist absorption of certain vitamins, and carbohydrates for energy. - Elderly People: May require fewer overall calories but still need to ensure adequate intake of vitamins and minerals.

Water

- Water: Essential for a myriad of bodily functions such as the transportation of nutrients and oxygen, maintaining body temperature, helps digestion and absorption.

Alcohol

- Alcohol: Not a necessary nutrient, but important to mention due to the potential health consequences of overconsumption. It provides 'empty' calories which can lead to weight gain. Long-term abuse can result in liver disease, heart disease, and certain cancers.

Food Choices for Specific Groups

  • People with diabetes: Need to regulate carbohydrate intake to manage blood glucose levels and avoid complications.
  • Vegans: Must find alternative sources of protein and B12 normally found in animal products, and may need to supplement omega-3 fatty acids.
  • People with lactose intolerance: Need to avoid dairy or consume lactose-free variants, and may need to find alternative sources of calcium.
  • People with coeliac disease: Should follow a gluten-free diet to prevent harm to their intestinal lining. Gluten is found in wheat, barley, and rye products.

Course material for Nutrition and Food Science, module Meeting the Nutritional Needs of Specific Groups, topic Nutrients and their function

Nutrition and Food Science

Experimenting to Solve Food Production Problems

Food science and nutrition experiments

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Food science and nutrition experiments

Understanding and Identifying Food Production Problems

  • Grasping the concept that food production problems arise from factors including production inefficiencies, spoilage during storage or transportation, and poor product quality or safety.
  • Identifying common problems faced in food production such as poor shelf life, contamination, nutritional degradation, and wastage due to improper handling.
  • Recognising that solutions to these problems may involve various approaches, such as improving processing methods, implementing better hygiene practices, or enhancing storage and preservation techniques.

Designing Experiments to Address Issues

  • Understanding that the experiment design process starts with identifying the problem in the food production line.
  • Establishing a hypothesis regarding the possible cause of the identified problem and projecting a potential solution.
  • Designing an experiment to test this hypothesis, which may involve altering the production process, changing storage methods, or introducing new handling techniques.
  • Remembering that each experiment should include variables and controls. The variables are the aspects that you change, and the controls are the aspects that remain constant.

Conducting the Experiment

  • Gearing up for the process of conducting the experiment, including collecting necessary equipment and supplies, setting up the environment, and preparing the food samples.
  • Taking precautions to ensure safety, such as wearing personal protective equipment and disposing of waste properly.
  • Documenting the experiment process in detail, including any observations, measurements, or unexpected outcomes.

Analysing Experiment Results

  • Collecting data from the experiment and analysing it to determine if the hypothesis was supported or disproved:
    • If the data supports the hypothesis, the proposed solution may effectively solve the food production problem.
    • If the data does not support the hypothesis, the experiment may need to be repeated with modifications, or a new hypothesis may need to be formulated.
  • Considering statistical relevance - it's important to run enough trials to ensure that the results are not due to chance.

Implementing Solutions and Evaluating Effectiveness

  • Making necessary changes to the food production process based on the experiment's results.
  • Implementing the solution on a small scale initially before scaling up to minimise potential risks.
  • Continually monitoring and evaluating the effectiveness of the solution implemented in improving the identified problem.
  • Carrying out further experiments as needed to refine and improve the solution.

Understanding the concepts and steps outlined above will ensure you're equipped to design, conduct, and evaluate experiments aimed at solving food production problems. Remember to approach experiments logically, thoughtfully, and objectively to achieve reliable results. Make sure your safety, observations, and documentation practices are thorough.

Course material for Nutrition and Food Science, module Experimenting to Solve Food Production Problems, topic Food science and nutrition experiments

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