The composition of phenolic acids in various parts of mangosteen fruit (Garcinia mangostana) was determined
by GC and MS. The total content of phenolic acids, identified by GC-FID ranged from 265.7 ± 12.7
(aril) to 5027.7 ± 188.0 (peel) mg per kg of dry matter of sample. Ten phenolic acids were identified in
mangosteen fruit. Of these, protocatechuic acid was the major phenolic acid in the peel and rind, while
p-hydroxybenzoic acid was the predominant phenolic acid in the aril. m-Hydroxybenzoic acid was
detected only in the peel, while 3,4-dihydroxymandelic was present only in the rind. The phenolic acids
liberated from esters and glycosidic bonds were the major fractions of phenolic acids in mangosteen fruit.