Graduate Program of Food Science and Technology (PPGCTA), Institute of Technology (ITEC), Federal University of Pará (UFPA), 66075-110 Belém, Pará, Brazil.
Brazilian Agricultural Research Corporation (EMBRAPA), Embrapa Eastern Amazon Research Center, Laboratory of Food Processing, 66095-100 Belém, Pará, Brazil.
Food Res Int. 2018 Jun;108:405-412. doi: 10.1016/j.foodres.2018.03.056. Epub 2018 Mar 22.
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 Oenocarpus distichus 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 种油棕果实的 32 种基因型，分析其总酚类化合物、类黄酮、黄烷醇、单体花青素、抗氧化能力（ABTS 和 DPPH 测定）和 5 种产量最高的基因型的酚类化合物谱。这些基因型是在巴西北部帕拉州的三个不同地点（贝伦、圣若昂-杜阿拉瓜亚和马拉巴）收获的。在 32 种基因型中，在贝伦（B-3、B-7 和 B-8）收获的三个基因型和在圣若昂-杜阿拉瓜亚（SJ-1 和 SJ-4）收获的两个基因型具有最高的生物活性化合物含量和抗氧化能力，总酚含量为 131.97 至 363.01mg 没食子酸当量/100g，总类黄酮含量为 24.23 至 38.19mg 槲皮素当量/100g，总黄烷醇含量为 72.29 至 259.18mg 儿茶素当量/100g，单体花青素含量为 21.31 至 67.76mg 矢车菊素 3-芸香糖苷/100g。在五个选定的基因型中，初步鉴定出的主要酚类化合物为矢车菊素 3-O-芸香糖苷（48.47 至 196.51μg/g），这是首次在油棕果实中鉴定和定量的主要酚类化合物，其次是绿原酸（0.71 至 64.56μg/g）和芦丁（13.98 至 56.76μg/g）。
