High resolution mass spectrometry identification of 25 phenolic acids in Fuji, Golden Delicious, Granny Smith, and Pink Lady apples.
Tentative identification of 8 phenolic acids not previously described in apples based upon accurate mass and MS/MS.
Identification of significant varietal differences in free and total phenolic acids in the peel and pulp of four important commercial apples.
Inclusion of mass spectra and fragmentation information for the key phenolic acids identified in apples.