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Acetylcholinesterase Inhibitors among Zingiber officinale Terpenes—Extraction Conditions and Thin Layer Chromatography-Based Bioautography Studies
Molecules ( IF 4.6 ) Pub Date : 2020-04-03 , DOI: 10.3390/molecules25071643
Lidia Czernicka 1 , Agnieszka Ludwiczuk 2 , Edward Rój 3 , Zbigniew Marzec 1 , Agata Jarzab 4 , Wirginia Kukula-Koch 5
Affiliation  

Although numerous studies have been conducted on ginger extracts and fractions, the data on the pharmacological activity of single constituents of Zingiber officinale are still insufficient. To assess the antidementia properties of the plant, a thin layer chromatography (TLC)-based bioautography acetylcholinesterase inhibitory assay was performed on the Zingiber officinale diethyl ether extract. It led to the recognition of three active inhibitors among volatile constituents of the plant: ar-curcumene (A), α-sesquiphellandrene (B) and a-zingiberene (C). The identification of the components was possible thanks to the application of a TLC–HPLC-MS interface analysis of active zones and the GC-MS qualitative analysis of the tested samples. Based on the obtained results, the influence of several extraction techniques (hydrodistillation—HD, pressurized liquid extraction or accelerated solvent extraction—ASE, shaking maceration–SM, supercritical fluid extraction–SFE, and ultrasound-assisted extraction—UAE) on the recovery of the active metabolites from plant material was assessed to deliver enriched extracts. As a result, HD and SFE, were found to be the most efficient methods to recover the volatile components and the concentrations of A, B, and C reached 0.51 ± 0.025, 0.77 ± 0.045, and 1.67 ± 0.11 percent, respectively. Only HD and SFE were found to recover monoterpene hydrocarbons from the plant matrix. The remaining techniques provided extracts rich in more complex constituents, like sesquiterpenes.

中文翻译:

姜萜中的乙酰胆碱酯酶抑制剂——提取条件和基于薄层色谱的生物自显影研究

尽管已经对生姜提取物和馏分进行了大量研究,但关于生姜单一成分的药理活性数据仍然不足。为了评估植物的抗痴呆特性,对姜二乙醚提取物进行了基于薄层色谱 (TLC) 的生物自显影乙酰胆碱酯酶抑制试验。它导致在植物的挥发性成分中识别出三种活性抑制剂:姜黄烯 (A)、α-倍半水芹烯 (B) 和姜黄烯 (C)。由于应用了活性区域的 TLC-HPLC-MS 界面分析和测试样品的 GC-MS 定性分析,可以识别组分。根据获得的结果,几种提取技术(水蒸馏-HD、加压液体萃取或加速溶剂萃取 - ASE、摇动浸渍 - SM、超临界流体萃取 - SFE 和超声辅助萃取 - 阿联酋)对从植物材料中回收活性代谢物进行了评估,以提供富集的提取物。结果发现 HD 和 SFE 是回收挥发性成分的最有效方法,A、B 和 C 的浓度分别达到 0.51 ± 0.025、0.77 ± 0.045 和 1.67 ± 0.11%。发现只有 HD 和 SFE 可以从植物基质中回收单萜烃。其余的技术提供了富含更复杂成分的提取物,如倍半萜。和超声辅助提取(UAE)对从植物材料中回收活性代谢物的影响进行了评估,以提供富集的提取物。结果发现 HD 和 SFE 是回收挥发性成分的最有效方法,A、B 和 C 的浓度分别达到 0.51 ± 0.025、0.77 ± 0.045 和 1.67 ± 0.11%。发现只有 HD 和 SFE 可以从植物基质中回收单萜烃。其余的技术提供了富含更复杂成分的提取物,如倍半萜。和超声辅助提取(UAE)对从植物材料中回收活性代谢物的影响进行了评估,以提供富集的提取物。结果发现 HD 和 SFE 是回收挥发性成分的最有效方法,A、B 和 C 的浓度分别达到 0.51 ± 0.025、0.77 ± 0.045 和 1.67 ± 0.11%。发现只有 HD 和 SFE 可以从植物基质中回收单萜烃。其余的技术提供了富含更复杂成分的提取物,如倍半萜。发现只有 HD 和 SFE 可以从植物基质中回收单萜烃。其余的技术提供了富含更复杂成分的提取物,如倍半萜。发现只有 HD 和 SFE 可以从植物基质中回收单萜烃。其余的技术提供了富含更复杂成分的提取物,如倍半萜。
更新日期:2020-04-03
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