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What conditions are most favourable for microbial food production? -…

- - - - Requires bacteria to develop flavour
      - milk coagulation
        
        Possible investigation: Effect of temperature on milk coagulation time.
    - - Fermentation develops flavour
- - - - oxygen levels
    - - hot
      - cold
  - - - size of vessel
      - type of vessel
        
        bottle
        
        jar
- - - - Bacteria
        
        used in yoghurt and cheese
      - Yeast
        
        used in beer and bread
- - - - animals
        
        lactic acid
      - yeast
        
        ethanol
        
        Possible investigation: Effect of fermentation time on ethanol production
        
        produces CO2 (bubbles)
        
        dependent variable
        
        measure bubble volume with ruler (cm)
        
        Possible investigation: Effect of temperature on yeast fermentation.
        
        Possible investigation: Effect of fermentation time on yeast fermentation.
- - - - number of microbes present
      - time taken for microbe growth