Investigation of Antioxidant Interactions between Radix Astragali and Cimicifuga foetida and Identification of Synergistic Antioxidant Compounds
文献类型： 外文期刊
作者： Wang, Fei 1 ; Zhao, Shancang 2 ; Li, Feng 1 ; Zhang, Bo 1 ; Qu, Yi 1 ; Sun, Tianlei 1 ; Luo, Ting 1 ; Li, Dapeng 1 ;
作者机构： 1.Shandong Agr Univ, Dept Food Sci, Tai An, Shandong, Peoples R China
2.Shandong Acad Agr Sci, Shandong Prov Key Lab Test Technol Food Qual & Sa, Jinan, Shandong, Peoples R China
3.Shandong Acad Agr Sci, Cent Lab, Jinan, Shandong, Peoples R China
期刊名称：PLOS ONE （ 影响因子：3.24； 五年影响因子：3.788 ）
ISSN： 1932-6203
年卷期： 2014 年 9 卷 1 期
页码：
收录情况： SCI
摘要： The medicinal plants of Huang-qi (Radix Astragali) and Sheng-ma (Cimicifuga foetida) demonstrate significantly better antioxidant effects when used in combination than when used alone. However, the bioactive components and interactional mechanism underlying this synergistic action are still not well understood. In the present study, 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assay was employed to investigate the antioxidant capacity of single herbs and their combination with the purpose of screening synergistic antioxidant compounds from them. Chromatographic isolation was performed on silica gel, Sephadex LH-20 columns and HPLC, and consequently to yield formononetin, calycosin, ferulic acid and isoferulic acid, which were identified by their retention time, UV lambda(max), MS and MS/MS data. The combination of isoferulic acid and calycosin at a dose ratio of 1:1 resulted in significant synergy in scavenging DPPH radicals and ferric reducing antioxidant power (FRAP) assay. Furthermore, the protective effects of these four potential synergistic compounds were examined using H2O2-induced HepG2 Cells bioassay. Results revealed that the similar synergy was observed in the combination of isoferulic acid and calycosin. These findings might provide some theoretical basis for the purported synergistic efficiency of Huang-qi and Sheng-ma as functional foods, dietary supplements and medicinal drugs.
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