3.3. Color
Fig. 1 shows L* (lightness), a* (green to red), whiteness index (WI) and browning index (BI) of the fresh-cut apples. WI and L* value of all the samples declined significantly throughout storage (P < 0.05). No significant differences (P > 0.05) were observed as a consequence of UV and CA + UV treatment compared to control. The lowest WI and L*value was found in the CA treated samples, indicating that CA treated fresh-cut apples surfaces was darker when compared to control. It has been reported that the change inL* of fresh-cut mango associated with the loss of water ( Rattanapanone et al., 2001). Therefore, the loss of water during storage may be a factor affecting the decrease of L*and whiteness index in CA treated fresh-cut apples.