microorganisms

• microorganisms need five conditions to grow quickly and multiply:

  • a warm temperature
  • plenty of moisture
  • plenty of food
  • the right pH
  • enough time
• some microorganisms can spoil food and others can cause food poisoning
• changing one of the conditions needed will slow or stop the growth of microorganisms altogether eg: using a fridge, pickling the food to change pH, adding salt which absorbs water, drying it out