3.1. Color
3.1.1. Color parameters a, b and L
The increase of a and b parameters was independent of the
drying temperature (Fig. 2). The relative visual yellow color
(b value) was slightly increased during drying at 45 and 60◦
C,
andpracticallyremainedwithoutchangesduringthedryingat
75◦
C. Similar results for the variationof values ofparameter a
werefoundbyChutintrasriandNoomhorm(2007)inpineapple
puree during thermal processing at 70–110◦
C. These authors
found that values of parameter b remained constant during
thermal processing at 70◦
C