Laboratory of Flavor & Chromatographic Analysis, PROCTA, Federal University of Sergipe, 49100-000 - São Cristóvão, SE, Brazil.
Laboratory of Flavor & Chromatographic Analysis, PROCTA, Federal University of Sergipe, 49100-000 - São Cristóvão, SE, Brazil.
Food Res Int. 2020 Apr;130:108899. doi: 10.1016/j.foodres.2019.108899. Epub 2019 Dec 24.
Edible flowers are receiving renewed interest as potential sources of bioactive compounds. The present study aimed to investigate the presence of bioactive compounds and antioxidant activity of some exotic flowers present in Brazil such as Amaranthus hypochondriacus, Tropaeolum majus (red), Tropaeolum majus (orange) and Spilanthes oleracea L. The content of total phenolic compounds, flavonoids, condensed, hydrolysable tannins and antioxidante capacity were determined. The identification and quantification of the phenolic compounds was performed through the UHPLC-QDa-MS system. The compounds p-coumaric acid and ferulic acid were identified and quantified for the first time in all flowers. Tropaeolum majus (red) presented the hightest amounts of total phenolic compounds and hydrolysable tannins. Also, it presented the highest antioxidant capacity for ORAC and FRAP assays. Thus, this study showed the diversity and abudance of natural antioxidants present in edible flowers, which could be explored for application in functional foods and pharmaceuticals.
食用花卉作为生物活性化合物的潜在来源，正重新受到关注。本研究旨在调查巴西一些外来花卉（如苋菜、红花菜豆（红色）、红花菜豆（橙色）和斯潘兰斯奥勒拉西亚 L）中生物活性化合物和抗氧化活性的存在。测定了总酚类化合物、类黄酮、缩合单宁、水解单宁和抗氧化能力的含量。通过 UHPLC-QDa-MS 系统进行了酚类化合物的鉴定和定量。首次在所有花朵中鉴定和定量了对香豆酸和阿魏酸。红花菜豆（红色）的总酚类化合物和可水解单宁含量最高。此外，它在 ORAC 和 FRAP 测定中表现出最高的抗氧化能力。因此，本研究表明，食用花卉中存在着丰富多样的天然抗氧化剂，可用于功能性食品和制药。
