Feduraev Pavel, Chupakhina Galina, Maslennikov Pavel, Tacenko Natalia, Skrypnik Liubov
Institute of Living Systems, Immanuel Kant Baltic Federal University, Kaliningrad 236000, Russia.
Antioxidants (Basel). 2019 Jul 23;8(7):237. doi: 10.3390/antiox8070237.
The study investigated the accumulation of phenolic compounds and the antioxidant activity of extracts of various parts of and , collected at the flowering stage and the fruiting stage. Half of the collected plants were divided into root, stem, leaves, and reproductive organs (inflorescence). The other half was used to study the vertical distribution of biologically active components and antioxidants throughout the plant. The samples were analyzed for total catechins content, total proanthocyanidins content, total phenolic content, and total antioxidant activity (1,1-diphenyl-2-picrylhydrazyl (DPPH), 2,2'azinobis(3)ethylbenzthiazoline-6-sulfonic acid (ABTS), and ferric reducing antioxidant power (FRAP) assays). All analyses were performed in four replicates. In general, a similar trend was observed in the distribution of phenolic compounds in the studied species. The maximum content of these secondary metabolites was noted in the reproductive organs, both in the flowering and fruiting period. Stems were characterized by a minimum content of the studied classes of substances. The antioxidant activity of the sorrels studied parts can be arranged in the following order: the generative part (flowers, seeds) > leaves > root > stem (for flowering and fruiting stages). It was found that parts of the root closer to the stem differed in higher activity.
该研究调查了在开花期和结果期采集的酸模属植物和皱叶酸模不同部位提取物中酚类化合物的积累情况及其抗氧化活性。所采集植物的一半被分为根、茎、叶和生殖器官（花序）。另一半用于研究生物活性成分和抗氧化剂在整株植物中的垂直分布。对样品进行了总儿茶素含量、总原花青素含量、总酚含量和总抗氧化活性（1,1 - 二苯基 - 2 - 苦基肼（DPPH）、2,2'- 联氮 - 双 -（3 - 乙基苯并噻唑啉 - 6 - 磺酸）（ABTS）和铁还原抗氧化能力（FRAP）测定）分析。所有分析均重复进行四次。总体而言，在所研究的物种中，酚类化合物的分布呈现出相似的趋势。在开花期和结果期，这些次生代谢物的最大含量均出现在生殖器官中。茎中所研究物质类别的含量最低。所研究的酸模属植物各部位的抗氧化活性可按以下顺序排列：生殖部位（花、种子）＞叶＞根＞茎（开花期和结果期均如此）。研究发现，根部靠近茎的部分活性较高。
