YR2-K4-LSN5

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 2

HAVE READY:

- JOIN THIS LESSONUP

- KERBOODLE PAGE 45

- YOUR NOTEBOOK

- GOOGLE CLASSROOM

LESSON 5 and 6: additives, preservation and disorders

TODAY'S LEARNING GOALS:

• I know the basics of what foods need to be prepared in what ways and why.
• I know various methods of food preservation and can name examples.
• I know what food additives are and why they are used.
• I understand what is on the labels on various foods in the supermarket.
• I know where my food comes from and how it is produced.

TODAY'S KEY WORDS:

• Preservatives
• Food coloring
• E-numbers 
• Drying
• Canning
• UHT
• Pasteurisation

read kerboodle pages 53

Why add additives?

Look up basic information on the use of additives. 

Focus on the main question: For what specific reason can additives be added to food?

Drag the additive type to the corresponding description

increases the volume of the foodproduct

prevents food product from dehydrating

prevents or inhibit spoilage of food due to fungi, bacteria and other microorganisms.

allows water and oils to remain mixed together in, as in mayonnaise, ice cream, and homogenized milk.

emulsifier

bulking agent

humectant

preservative

Have a look at your own food

Investigate the nutritional information of at least three food products. 

Prepare a short presentation on:

- what additives are added to what products

- what are their "E-numbers" 

- for what reason are they added to your products.

Diet-related deficiencies

You will now watch two clips on diet-related deficiences. Afterwards you will read p. 47-50 from Kerboodle.

Diet-related deficiencies

You will now read p. 47-50 from Kerboodle.

An iron deficiency can lead to:

1. kwashiorkor
2. anemia
3. scurvy
4. rickets

What dietary change would you recommend when someone becomes anemic?

Rickets is caused by a deficiency in?

1. iron
2. calcium
3. vitamin C
4. vitamin D

What dietary change do you recommend when vitamin D levels are low? Look up your answer on the internet.

Why add additives?

Look up basic information on the use of additives. 

Focus on the main question: For what specific reason can additives be added to food?

Preservation methods

• Invest the time in looking up information on the following preservation methods. Focus on:
• how they work
• for what food products they are well suited
• advantages
• disadvantages

Freezing

Canning

Salting

Candying

Pasteurizing

Sterilizing

Explain what method you would use to preserve fresh milk. Include at least an advantage and a drawback.

Explain what method you would use to preserve fish. Include at least an advantage and a drawback.

HW for lesson 6

Prepare a flyer in which you give information on one of the indicated psychological disorders. Specify:

- the characteristics of the disorder

- how do you recognize it?

- what can you do to help?

Anorexia nervosa

Boulimia nervosa

Orthorexia