Flavonoid and Phenolic Quantification from Açaí (Euterpe oleracea Mart, Euterpe precatoria Mart), Mirití (Mauritia flexuosa L.), and Cupuassu (Theobroma grandiflorum (Wild. Ex Spreng.) Schum) from Vaupés – Colombia Using LC-QqQ-MS

Amazonian fruits are valued for their rich phytochemical composition, yet limited data exist for species in Colombia. This study aimed to characterize the flavonoid and phenolic acid profiles of Euterpe olereacea, Euterpe precatoria (açaí) Mauritia flexuosa (mirití) and Theo-broma grandiflorum (cupuassu) from Vaupes, Colombia. Liquid chromatography coupled with triple quadrupole mass spectrometry (LC-QqQ-MS) was used to identify and quanti-fy bioactive compounds in fruit pulp samples. A total of 14 flavonoids and 23 phenolic acid derivatives were detected. M. flexuosa exhibited the highest total flavonoid content, particularly catechin (4.86 µg/g) in overripe fruits. E. oleracea and E. precatoria showed the highest phenolic acid concentrations, with 4-hydroxybenzoic acid and ferulic acid as dominant compounds. Compared to international reports, the Colombian samples gener-ally presented lower concentrations, likely due to genotypic, environmental, and method-ological differences. These findings contribute to the phytochemical profiling of un-derrepresented Amazonian fruits and support their potential for functional food and nutraceutical applications. Further studies are recommended to evaluate the bioavailabil-ity and health-promoting effects of these compounds.