Variation in Phenolic Compounds Content and Antioxidant Activity of Different Plant Organs from Rumex crispus L. and Rumex obtusifolius L. at Different Growth Stages

被引:82
作者
Feduraev, Pavel [1 ]
Chupakhina, Galina [1 ]
Maslennikov, Pavel [1 ]
Tacenko, Natalia [1 ]
Skrypnik, Liubov [1 ]
机构
[1] Immanuel Kant Baltic Fed Univ, Inst Living Syst, Kaliningrad 236000, Russia
关键词
Rumex L; polyphenols; catechins; antioxidant activity; DPPH; ABTS; FRAP; OXIDATIVE STRESS; LEAFY VEGETABLES; ACID-COMPOSITION; POLYPHENOLS; EXTRACTS; GENETICS; HEALTH; LEAVES; ROOTS; WILD;
D O I
10.3390/antiox8070237
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The study investigated the accumulation of phenolic compounds and the antioxidant activity of extracts of various parts of R. crispus and R. obtusifolius, 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.
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页数:15
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