This research aimed to evaluate 32 genotypes of Oenocarpus distichus fruits regarding the contents of total phenolic compounds, flavonoids, flavanols, monomeric anthocyanins, antioxidant capacity (ABTS and DPPH assays), and the phenolic compound profiles of the five genotypes that presented the highest yields of bioactive compounds. The genotypes were harvested in three different locations in Pará State, Northern Brazil, (Belém, São João do Araguaia and Marabá). Among the 32 genotypes, the highest bioactive compound contents and antioxidant capacity were found for three genotypes harvested in Belém (B-3, B-7 and B-8) and two harvested in São João do Araguaia (SJ-1 and SJ-4), and the total phenolic compounds varied from 131.97 to 363.01 mg gallic acid equivalent/100 g, total flavonoids from 24.23 to 38.19 mg quercetin equivalent/100 g, total flavanols from 72.29 to 259.18 mg catechin equivalent/100 g, and monomeric anthocyanins from 21.31 to 67.76 mg cyanidin 3-rutinoside/100 g. The main phenolic compounds tentatively identified in the five selected genotypes were cyanidin 3-O-rutinoside (48.47 to 196.51 μg/g), which could be identified and quantified as the major phenolic compound in bacaba-de-leque fruits for the first time, followed by chlorogenic acid (0.71 to 64.56 μg/g) and rutin (13.98 to 56.76 μg/g).

本研究旨在评估32种Oenocarpus distichus基因型关于总酚类化合物，类黄酮，黄烷醇，单体花色苷，抗氧化能力（ABTS和DPPH分析）的含量以及五种基因型的酚类化合物概况，这些化合物代表了最高的生物活性化合物产量。基因型在巴西北部帕拉州的三个不同地点（贝伦，圣若昂杜阿拉瓜和马拉巴）收获。在这32个基因型中，在贝伦（B-3，B-7和B-8）收获的三种基因型和在圣若昂多阿拉瓜（SJ-1和SJ-4）收获的三种基因型中发现了最高的生物活性化合物含量和抗氧化能力），总酚化合物含量从131.97到363.01 mg没食子酸当量/ 100 g，总黄酮从24.23到38.19 mg槲皮素当量/ 100 g，总黄烷醇从72.29到259.18 mg儿茶素当量/ 100 g，以及从21.31至67.76 mg的花青素3-芸香糖苷/ 100 g单体花色苷。暂定在五种选定的基因型中初步鉴定出的主要酚类化合物是花青素3-O-芸香糖苷（48.47至196.51μg/ g）首次被鉴定和定量为bacaba-de-leque水果中的主要酚类化合物，然后是绿原酸（0.71至64.56μg/ g）和芦丁（ 13.98至56.76μg/ g）。