Why are Green Apples on Kaufmann 1 and Red Apples not?

Green vs. Red apples

Malic acid is a natural antifungal and is found in apple cider vinegar.  Long before the young girl in the link below was born, I hypothesized that the tartness of green apples meant that their malic acid content would be much higher than the malic acid in sweet red apples.

As it turns out, I was right as proven by this wonderful girls science project 10 years ago. Do you suppose she is a FUPO head (fungus until proven otherwise) today?

Research paper by Brittany B. 2003-04

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