Food spoilage Food spoilage organismsorganisms

Lesson objective – to Lesson objective – to understand the conditions understand the conditions that cause food spoilagethat cause food spoilage

Questions Questions • Do you know when food spoilage

may occur?• What is physical contamination?• How could transportation affect food?• What is the average shelf life of fresh

food?

Lesson objective – to understand the conditions that cause Lesson objective – to understand the conditions that cause food spoilagefood spoilage

Micro-organismsMicro-organisms• Yeasts• Mounds• Bacteria• Task 1 – find out what all three of

these mean

Lesson objective – to understand the conditions that cause Lesson objective – to understand the conditions that cause food spoilagefood spoilage

Did you know? Did you know? • Ion order to grow and multiply micro-

organisms you need:– Warmth\moisture– Food supply– Time– Air\neutral pH– If one or more of these conditions is

removed then growth of micro-organisms is slowed

Lesson objective – to understand the conditions that cause Lesson objective – to understand the conditions that cause food spoilagefood spoilage

Task 2Task 2• Go onto the internet and copy and paste a

temperature control that shows the prevention of food spoilage indicators

• Task 3 • Now read the case study on page 79 and

answer the questions 1-2-3• List what micro organisms are (all three)• What does aerobic bacteria need to grow?• Wht does Anaerobic bacteria need to

grow?Lesson objective – to understand the conditions that cause Lesson objective – to understand the conditions that cause food spoilagefood spoilage