Food Processing, Food Preservation,Convenience Foods and Leftovers

1 Chapter 12Activity Packs

Chapter 12Food Processing, Food Preservation,

Convenience Foods and Leftovers

Activity 1Explain in detail how you would freeze 500g of fresh strawberries.

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2 Chapter 12 Food Processing, Food Preservation,Convenience Foods and Leftovers

Activity Packs

Activity 2Foods from the four food groups are listed below. Which method(s) of preservation are suitablefor each food? Indicate your answers with a tick. Often more than one method is suitable.

Food Freezing Drying CanningChemicalpreserva-

tion

Pasteuris-ation

Vacuuumpacking

Other(name)

Protein group

Red meat

Poultry

Fish

Eggs

Fruit and vegetable group

Mushrooms

Potatoes

Peas

Sprouts

Bananas

Apples

Strawberries

Peaches

Milk group

Milk

Yoghurt

Cheese

Bread and cereal

Rice

Corn

Breakfast cereals

3 Chapter 12Activity PacksFood Processing, Food Preservation,Convenience Foods and Leftovers

Activity 3Each of the foods pictured below has been preserved. Explain how preservation has beenachieved in each case.

(i)

(ii)

(iii)

(iv)

(v)

4 Chapter 12 Activity PacksFood Processing, Food Preservation,Convenience Foods and Leftovers

Activity 4Below is a list of single-product convenience foods. Combine each one with fresh ingredients ofyour choice to make a nutritious dish or meal.

Activity 5Compare a convenience meal, e.g. lasagne, with a home-made version under each of thefollowing headings.

Product Description of nutritious dish/meal

Tin of tuna

Cheese sauce mix

Frozen peas

Tin of tomatoes

Oven chips

Dried pasta shapes

Bolognese sauce

Ready-to-roll pastry

Raisins

• Cost

• Preparation and cooking time

• Taste

• Food value

5 Chapter 12Activity PacksFood Processing, Food Preservation,Convenience Foods and Leftovers

Activity 6

1. What is the name of this product?

2. What ingredient is most plentiful in this product?

3. How long can this product be stored in the icebox of a fridge?

4. Where has this product been manufactured?

8. There are two precautions written on this product that relate to the safe use of cook-chill foods.What are they?

7. How does the manufacturer suggest this product be best cooked?

6. How many kilocalories does this pack provide?

5. If you are not satisfied with this product, where does the label suggest you write to?

(i)

(ii)

9. Find out why it is necessary to ‘stand’ microwaved foods before eating them.

6 Chapter 12 Activity PacksFood Processing, Food Preservation,Convenience Foods and Leftovers

Now test yourself at www.eTest.ie

Activity 7Revision crossword

ACROSS3 Allows water and oil to mix (8)6 Possible effect of mixing additives (8)7 Cause fruit to ripen naturally (7)

10 What happens when food is leftexposed in freezer (7, 4)

11 Prevent fats reacting with air and goingrancid (12)

13 Plunging vegetables into boiling waterthen cold to destroy enzymes (9)

14 Industrial method of preservation –extreme heat and exclusion of air (7)

15 Micro-organism used in making breadand beer (5)

DOWN1 Reheated (9)2 Short for well-known flavour enhancer (3)4 Process that slows down food spoilage

(12)5 Causes bread and fruit to spoil (5)8 Method of freezing foods likely to stick

together (4)9 Controversial method of preserving fruit

and veg (11)12 Freezing at –35°C (5)

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