# Food spoilage

Source: https://projectgcse.co.uk/food_technology/safety_and_hygiene/food_spoilage

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#### **Yeast**

- Yeast are microscopic fungi which reproduce by budding.
- Yeast grow on sugar and produce carbon dioxide.
- Yeast can attack sugary foods such as fruit and jam and cause spoilage.
- Yeast is used usefully to make alcohol.

#### **Bacteria**

- Bacteria are single celled organisms which are widely found in soil and air.
- Some bacteria are useful but others cause food spoilage and are poisonous.
- Useful bacteria are used to make yoghurt and cheese.

#### **Moulds**

- Moulds are a form of fungi.
- Moulds are carried on wind and settle on food.
- They grow on the surfaces of food such as bread, meat and cheese.