Does mold ever grow on nonperishable food?

By Susan Brewer, Ph.D., University of Illinois,
Department of Food Science and Human Nutrition
 

That depends on what you consider perishable.  We usually consider perishable foods to be those with high water content and plenty of nutrients capable of  encouraging  microbial growth.  Molds require less water than bacteria.  For this reason, they can grow on foods that we often consider only semi-perishable, such as  bread.
 
Source(s):
 
Mortimer, S. and Wallace, C. 1998.  HACCP: A Practical Approach.  Ch. 7. “An Introduction to Hazards and Their Control.”  Aspen Publishers, Gaithersburg, MD. Pp. 78-80.
 
Suite101.com. Reinhardt, D. 2009. “Importance and Significance of Molds and Yeast.”  “The Basic Features, Habits, and Characteristics of Mold and Yeast.”