“…When the value of L*, a*, and b* is negative, the color tends to be black, green, and blue, respectively. 55,56 After storage for 14 days, banana in the absence of Pt/CeO 2 -P exhibited a lower L* value, higher a* value, and lower b* value than those in the bags containing Pt/CeO 2 -P. The higher L* value, low a* value with Pt/CeO 2 -P treatment than those in control samples were due to the black and brown color created over the ripening process of bananas. Moreover, as shown in Figure 7e, the b* value of bananas with Pt/CeO 2 -P is higher than that for the control, which is attributed to the ripening process of bananas resulting in the color change from green to yellow.…”