In particular, the total phenolic content of rind extract was approximately 3-fold and 5-fold higher than those of the flesh and seed extracts, respectively (Table 1). Phenolic compounds are commonly found in plants, both edible and inedible. Like mangosteen extract,
5
in addition, Zadernowski et.al. (2009) reported that the rind extract also had the highest content of polyphenol as compared with its peel and aril.