Photo AI
Why is food processed? List the causes of food spoilage - Junior Cycle Home Economics - Question 2 - 2009
Question 2
Why is food processed? List the causes of food spoilage. Explain the conditions that cause foods to decay. Name two methods of preserving food at home and suggest... show full transcript
Worked Solution & Example Answer:Why is food processed? List the causes of food spoilage - Junior Cycle Home Economics - Question 2 - 2009
Step 1
Why is food processed?
Answer
Food is processed for several reasons:
-
To kill micro-organisms: Processing destroys harmful bacteria and pathogens, ensuring the food is safe to consume.
-
To prevent waste: By processing food, we can extend its shelf life and reduce spoilage, making it more efficient for producers and consumers alike.
-
To prevent enzyme activity: Processing can stop the action of naturally occurring enzymes that might cause deterioration.
-
Adds variety to the diet: Various processing techniques can create new flavors and textures, making food more enjoyable and diverse.
-
To retain nutritive value: Some processing methods help preserve the vitamins and minerals in food, making it healthier for consumers.
Step 2
Step 3
Explain the conditions that cause foods to decay.
Answer
Food decays primarily due to several conditions:
-
Warmth: High temperatures can accelerate spoilage by fostering the growth of harmful micro-organisms.
-
Oxygen: Oxygen exposure can cause oxidation, leading to rancidity and spoilage in many foods.
-
Moisture: Excess moisture creates an ideal environment for the growth of molds and bacteria, further contributing to food decay.
Step 4
Name two methods of preserving food at home and suggest a different food suitable for each method.
Answer
-
Freezing: Suitable foods include fish, bread, and carrots.
- Freezing method involves placing food in airtight containers or bags before freezing.
-
Jam-making: Suitable food includes strawberries.
- Jam-making method involves cooking fruit with sugar to create preserves.
Step 5
Select one of the foods you have named and describe in detail how you can preserve and store it in the home.
Answer
I will select strawberries for preservation:
-
Method of Preservation: Jam-making.
- To make strawberry jam, wash and trim the strawberries. Mash them in a pot and add sugar. Cook the mixture while stirring constantly until it thickens.
- Pour the hot jam into sterilized jars and seal them immediately.
-
Storage: Store the jars in a cool, dark place. Ensure proper labeling with the date of preservation. Once opened, store in the refrigerator and consume within a few weeks.
Step 6
What information does this symbol give to the consumer?
Answer
The symbol indicates that:
-
Food has been irradiated: This means that the food has been treated with radiation to kill harmful micro-organisms and parasites.
-
Energy waves have passed through the food: This can help in preserving the food for a longer time.
-
Many micro-organisms have been killed: The treatment helps in ensuring the food is safe and reduces spoilage.