POD activity detected in this study is vague on browning incidence of the fresh-cut wax apple fruits during storage. In previous work, we showed that pineapple fruit core extract prevented browning of the fresh-cut wax apples but POD activity of the treated fruit was higher than that of the uncoated fresh-cut fruit while PPO activity of the control was significantly higher than that of the treated fresh-cut fruits (Supapvanich et al. 2012). From these results, we suggest that the main factor relating browning incidence of fresh-cut wax apple fruits during storage is the activity of PPO on phenolic compounds in the fruit. The A. vera gel coating could retard PPO activity and the increase in TP content during storage.