A relatively unexplored method to enhance the sensory and nutritional properties of chocolate is to use
plant polyphenols. In this study, a low cost agricultural waste product – mangosteen (Garcinia mangostana
Linn.) pericarp – was added as powder in graded amounts (1%, 2% and 3% w/w) to dark and compound
chocolates during the mixing stage and evaluated. The particle size distributions of the chocolates
were mostly within 30 lm and the chocolates displayed a homogeneous morphology. The polyphenols
(procyanidins and xanthones) in mangosteen pericarp powder were also stable to simulated chocolate
processing. The 3% pericarp powder concentration significantly expanded the bioactive profile and total
phenolic content (13% in dark chocolates and 50% in compound chocolates) compared to their plain counterparts
without affecting sensory qualities. Such low cost plant polyphenols could enhance the bioactive
and flavor profile of chocolates, especially in low cocoa content compound chocolates.