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What causes brown patches on the skin of apples?
Brown patches on apples may be caused by the presence of too much oxygen during storage. It is called scald. The condition is similar to the browning that occurs when a cut apple is exposed to air.
Angela M. Fraser, Ph.D., Associate Professor/Food Safety Specialist, NC State University, Raleigh, NC (August 2004)
PREPARED BY: Angela M. Fraser, Ph.D., Associate Professor/Food Safety Specialist, and Carolyn J. Lackey, Ph.D., R.D., L.D.N., Professor/Food and Nutrition Specialist, North Carolina State University (August 2004)