Bacteria and Moisture Differences
Country: United States
Date: January 2009
How do moisture levels affect bacterial growth?
Bacteria need a certain moisture level to grow. Some bacteria can surive
dry conditions by forming what is known as a spore and can germinate once
the moisture conditions they need are re-established. This is why in the
past, before refrigeration, some foods were preserved by drying them, ie.
beef jerky, prunes (dried plums), etc. Also, as long as foods like cereal
are kept dry, they don't spoil. They may taste stale, though.
Click here to return to the Molecular Biology Archives
Update: June 2012