Food spoilage

Food preserved

Preventing or delaying microorganisms life processes

Unpreserved food

Microorganisms processes cause food becomes spoilt

Causes of food spoilage

Exposed food to environment, actions by microorganisms

Characteristics of spoilt food

Changes of colour, unpleasent smell, tastes sour & slimy

Characteristics of spoiled food

The texture, smell and taste of food are not the same as before

Characteristics of spoiled meat

The meat looks black and smells bad

Preservation by drying

Removes water content in food using heat

Vacuum curing

Removing air content can prevent microorganisms

Curing by ignition

Igniting is a method of drying over fire with a long period of time.

Preservation by pickling

Use a solution of sugar or vinegar to prevent the growth of microorganisms