MadSci Network: Microbiology

Re: what components in coffee and tea make it mold?

Date: Tue Mar 15 13:34:41 2005
Posted By: Charlene Wolf-Hall, Faculty, Food Science & Food Safety
Area of science: Microbiology
ID: 1109471056.Mi

Hi Chelsea,

Although coffee and tea do not contain much for nutrition for us a humans, they do contain carbon compounds and nitrogenous compounds which some fungi can use for food. If you leave a cup of coffee or tea sitting out over time, fungal spores in the air will land on the surface and, if conditions are favorable, the spore will germinate and a colony will start to grow.

More about chemistry of coffee, try Decaffeinating coffee and lectures on coffee.

More about the chemistry of tea try tea talk.

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