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Identification and occurrence of phenylethanoid and iridoid glycosides in six Polish broomrapes (Orobanche spp. and Phelipanche spp., Orobanchaceae)
Phytochemistry ( IF 3.8 ) Pub Date : 2020-02-01 , DOI: 10.1016/j.phytochem.2019.112189
Dariusz Jedrejek 1 , Sylwia Pawelec 1 , Renata Piwowarczyk 2 , Łukasz Pecio 1 , Anna Stochmal 1
Affiliation  

There are about 200 holoparasitic broomrapes (Orobanchaceae) known worldwide, however, only several species have been so far investigated phytochemically. Among Orobanche s.l. are both rare and endangered species, as well as onerous crop pests. This study aims to give a phytochemical description, both qualitative and quantitative, of six broomrape species (Orobanche and Phelipanche taxa) growing in Poland, including species that have not been tested in detail (O. caryophyllacea, O. lutea, O. picridis, and P. arenaria). Sixteen metabolites, including 14 phenylethanoid glycosides (PhGs) and 2 iridoid glycosides (IrGs), were isolated and identified using NMR spectroscopy and hydrolysis, revealing the presence of two previously undescribed PhGs in P. ramosa, named ramoside A and 2'-acetylramoside A. In addition, in the example of O. caryophyllacea, we have reported as the first occurrence of IrGs in broomrapes. Concentrations of phenylethanoids, the main constituents of broomrapes, in the studied plant material (flowering shoots with haustoria) were determined using the UHPLC-PDA method. It was found that P. ramosa has been the richest source of PhGs. In addition, the differences between broomrapes have been visualized using principal component and cluster analysis. The results of the antiradical DPPH test of 13 PhGs confirmed previous findings on the relation of the antioxidant potential with the structure of phenolic moieties - phenolic acid and phenylethanoid unit.

中文翻译:

六种波兰扫帚菜(Orobanche spp. 和 Phelipanche spp., Orobanchaceae)中苯乙醇和环烯醚萜苷的鉴定和存在

全世界已知大约有 200 种全寄生的扫帚菜(Orobanchaceae),然而,迄今为止,只有几种物种进行了植物化学研究。Orobanche sl 中既有稀有和濒危物种,也有繁重的农作物害虫。本研究旨在对生长在波兰的六种扫帚菜品种(Orobanche 和 Phelipanche 分类群)进行定性和定量的植物化学描述,包括尚未经过详细测试的物种(O. caryophyllacea、O. lutea、O. picridis、和 P. arenaria)。使用 NMR 光谱和水解分离并鉴定了 16 种代谢物,包括 14 种苯乙醇苷 (PhG) 和 2 种环烯醚萜苷 (IrG),揭示了 P. ramosa 中存在两种以前未描述的 PhG,分别命名为 ramoside A 和 2'-acetylramoside A . 另外,在 O. caryophyllacea 的例子中,我们已经报道了第一次在扫帚中出现 IrG。使用 UHPLC-PDA 方法测定了所研究植物材料(具有吸器的开花枝条)中苯乙醇(扫帚菜的主要成分)的浓度。发现 P. ramosa 是最丰富的 PhG 来源。此外,还使用主成分和聚类分析将扫帚之间的差异可视化。13 种 PhG 的抗自由基 DPPH 测试结果证实了先前关于抗氧化潜力与酚部分结构 - 酚酸和苯乙醇单元的关系的发现。使用 UHPLC-PDA 方法测定所研究植物材料(具有吸器的开花芽)中的 发现 P. ramosa 是最丰富的 PhG 来源。此外,还使用主成分和聚类分析将扫帚之间的差异可视化。13 种 PhG 的抗自由基 DPPH 测试结果证实了先前关于抗氧化潜力与酚部分结构 - 酚酸和苯乙醇单元的关系的发现。使用 UHPLC-PDA 方法测定所研究植物材料(具有吸器的开花芽)中的 发现 P. ramosa 是最丰富的 PhG 来源。此外,还使用主成分和聚类分析将扫帚之间的差异可视化。13 种 PhG 的抗自由基 DPPH 测试结果证实了先前关于抗氧化潜力与酚部分结构 - 酚酸和苯乙醇单元的关系的发现。
更新日期:2020-02-01
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