Why does a banana touching an apple cause a 'bruise' on the apple?

MadSci Network: Agricultural Sciences

Subject: Why does a banana touching an apple cause a 'bruise' on the apple?

Date: Fri Sep 29 11:53:14 2000
Posted by Mark Blake
Grade level: nonaligned School: Charles Schwab & Co.
City: Denver State/Province: CO Country: USA
Area of science: Agricultural Sciences
ID: 970242794.Ag

Message:


I typically pack a lunch which contains an apple and a banana.  More than 
once, the two have been touching one another (not actively) for several 
hours.  The result is a bruised spot on the apple.  I assume a chemical 
exchange and subsequent reaction takes place.  Any idea?  Thank you.

Re: Why does a banana touching an apple cause a 'bruise' on the apple?

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