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91.
Quantitative determination of 15 bioactive triterpenoid saponins in different parts of Acanthopanax henryi by HPLC with charged aerosol detection and confirmation by LC–ESI‐TOF‐MS 下载免费PDF全文
Guo‐zhu Liu Xiang Wang Ok‐kyoung Kwon Hyeong‐kyu Lee Wan‐kyunn Whang Xiang‐qian Liu 《Journal of separation science》2016,39(12):2252-2262
Triterpenoid saponins are difficult to analyze using high‐performance liquid chromatography coupled to UV/vis spectrophotometry due to their lack of chromophores. This study describes the first analytical method for the determination of 15 triterpenoid saponins from the leaves, stems, root bark, and fruits of Acanthopanax henryi, using a high‐performance liquid chromatography with charged aerosol detection coupled with electrospray ionization mass spectrometry method. The separation was carried out on a Kinetex XB‐C18 column with an acetonitrile/water gradient as the mobile phase, followed by charged aerosol detection. The operating conditions of charged aerosol detection were set at 24 kPa for nitrogen pressure and 100 pA for the detection range. Liquid chromatography with electrospray ionization mass spectrometry is described for the identification of compounds in plant samples. The electrospray ionization mass spectrometry method involved the use of the [M + Na]+ and [M + NH4]+ ions for compounds 1 – 15 in the positive ion mode with an extracted ion chromatogram. The developed method was fully validated in terms of linearity, sensitivity, precision, repeatability, and recovery, then subsequently applied to evaluate the quality of A. henryi. 相似文献
92.
Simultaneous quantification of triterpenoid saponins in rat plasma by UHPLC–MS/MS and its application to a pharmacokinetic study after oral total saponin of Aralia elata leaves 下载免费PDF全文
Baimei Li Xiaoting Lin Zhibin Wang Hai Jiang Hongwei Zhang Haixue Kuang 《Journal of separation science》2016,39(22):4360-4368
A rapid, sensitive, and reliable analytical ultra performance liquid chromatography with tandem mass spectrometry method was developed for the simultaneous determination of Aralia‐saponin IV, 3‐O‐β‐d ‐glucopyranosyl‐(1→3)‐β‐d ‐glucopyranosyl‐(1→3)‐β‐d ‐glucopyranosyl oleanolic acid 28‐O‐β‐d ‐glucopyranoside, Aralia‐saponin A and Aralia‐saponin B after the oral administration of total saponin of Aralia elata leaves in rat plasma. Plasma samples were pretreated by protein precipitation with methanol. The analysis was performed on an ACQUITY UPLC HSS T3 column. The detection was performed on a triple quadrupole tandem mass spectrometer in multiple reaction monitoring mode using an electrospray ionization source with negative ionization mode. Under the experimental conditions, the calibration curves of four analytes had good linearity values (r > 0.991). The intra‐ and inter‐day precision values of the four analytes were ≤ 11.6%, and the accuracy was between –6.2 and 4.2%.The extraction recoveries of four triterpenoid saponins were in the range of 84.06–91.66% (RSD < 10.5%), and all values of the matrix effect were more than 90.30%. The developed analytical method was successfully applied to pharmacokinetic study on simultaneous determination of the four triterpenoid saponins in rat plasma after oral administration of total saponin of Aralia elata leaves, which helps guiding clinical usage of Aralia elata leaves. 相似文献
93.
Pro-inflammatory cytokines and anti-inflammatory cytokines are important mediators that regulate the inflammatory response in inflammation-related diseases. The aim of this study is to evaluate different New Zealand (NZ)-grown ginseng fractions on the productions of pro-inflammatory and anti-inflammatory cytokines in human monocytic THP-1 cells. Four NZ-grown ginseng fractions, including total ginseng extract (TGE), non-ginsenoside fraction extract (NGE), high-polar ginsenoside fraction extract (HPG), and less-polar ginsenoside fraction extract (LPG), were prepared and the ginsenoside compositions of extracts were analyzed by HPLC using 19 ginsenoside reference standards. The THP-1 cells were pre-treated with different concentrations of TGE, NGE, HPG, and LPG, and were then stimulated with lipopolysaccharide (LPS). The levels of pro-inflammatory cytokines, including tumor necrosis factor-alpha (TNF-α), interleukin-1 beta (IL-1β), interleukin-6 (IL-6), interleukin-8 (IL-8), and anti-inflammatory cytokines, such as interleukin-10 (IL-10), and transforming growth factor beta-1 (TGF-β1), were determined by enzyme-linked immunosorbent assay (ELISA). TGE at 400 µg/mL significantly inhibited LPS-induced TNF-α and IL-6 productions. NGE did not show any effects on inflammatory secretion except inhibited IL-6 production at a high dose. Furthermore, LPG displayed a stronger effect than HPG on inhibiting pro-inflammatory cytokine (TNF-α, IL-1β, and IL-6) productions. Particularly, 100 µg/mL LPG not only significantly inhibited the production of pro-inflammatory cytokines TNF-α, IL-1β, and IL-6, but also remarkably enhanced the production of anti-inflammatory cytokine IL-10. NZ-grown ginseng exhibited anti-inflammatory effects in vitro, which is mainly attributed to ginsenoside fractions (particularly less-polar ginsenosides) rather than non-saponin fractions. 相似文献
94.
Concise Synthesis and Antidiabetic Effect of Three Natural Triterpenoid Saponins Isolated from Fadogia ancylantha (Makoni tea) 下载免费PDF全文
The first concise synthesis of the bidesmosidic oleanolic acid saponins 1 – 3 isolated from Fadogia ancylantha (Makoni tea) have been accomplished through a ‘one‐pot sequential glycosylation’ strategy with two glycosyl 1‐(trichloroacetimidate)s as glycosyl donors. The synthesized natural products 1 – 3 were then evaluated for their inhibitory activities against α‐glucosidase, α‐amylase, and lipase. Among the assayed compounds 1 – 3 , compound 1 showed strong α‐glucosidase and α‐amylase inhibition, with IC50 values of 160 and 180 μM , respectively. Moreover, compounds 2 and 3 showed strong inhibition against α‐glucosidase and lipase, with the respective IC50 values of 170 and 190 μM , and 190 and 200 μM . 相似文献
95.
A simple and accurate analytical method was developed for simultaneous and quantitative analysis of six triterpenoid saponins in Schefflera kwangsiensis via high-performance liquid chromatography (HPLC) with mass spectrometry (MS) in this study. Separation was performed on a Thermo hypersil GOLD C18 column (150 mm × 2.1 mm, 5 μm). A mobile phase consisting of methanol/acetonitrile/8 mM ammonium acetate in water was used with a flow rate of 0.3 mL/min. The analytes were detected by MS with the electrospray ionisation (ESI) source combined with negative monitoring and full scan mode, and were analysed by extracted ion chromatography. This established HPLC-ESI-MS analysis demonstrated good linearity, sensitivity, stability, precision, accuracy and recovery. Therefore, this analytical method has great potential to be a novel tool to qualify S. kwangsiensis. 相似文献
96.
Separation and purification of both tea seed polysaccharide and saponin from camellia cake extract using macroporous resin 下载免费PDF全文
Pengjie Yang Mingda Zhou Chengyun Zhou Qian wang Fangfang Zhang Jian Chen 《Journal of separation science》2015,38(4):656-662
A novel method to separate and purify tea seed polysaccharide and tea seed saponin from camellia cake extract by macroporous resin was developed. Among four kinds of resins (AB‐8, NKA‐9, XDA‐6, and D4020) tested, AB‐8 macroporous resin possessed optimal separating capacity for the two substances and thus was selected for the separation, in which deionized water was used to elute tea seed polysaccharide, 0.25% NaOH solution to remove the undesired pigments, and 90% ethanol to elute tea seed saponin. Further dynamic adsorption/desorption experiments on AB‐8 resin‐based column chromatography were conducted to obtain the optimal parameters. Under optimal dynamic adsorption and desorption conditions, 18.7 and 11.8% yield of tea seed polysaccharide and tea seed saponin were obtained with purities of 89.2 and 96.0%, respectively. The developed method provides a potential approach for the large‐scale production of tea seed polysaccharide and tea seed saponin from camellia cake. 相似文献
97.
Turibio Kuiate Tabopda Anne‐Claire Mitaine‐Offer Tomofumi Miyamoto Chiaki Tanaka Jean‐François Mirjolet Olivier Duchamp Bonaventure Tchaleu Ngadjui Marie‐Aleth Lacaille‐Dubois 《Helvetica chimica acta》2011,94(11):2066-2076
The four new acylated triterpene saponins 1 – 4 , isolated as two pairs of isomers and named libericosides A1/A2 and B1/B2, one pair of isomers 5 / 6 , the (Z)‐isomer libericoside C2 ( 5 ) being new, one new sucrose ester, atroximoside ( 7 ), and eight known compounds were isolated from the roots of Atroxima liberica by repeated MPLC and VLC on normal and reversed‐phase silica gel. Their structures were elucidated on the basis of extensive 1D‐ and 2D‐NMR studies (1H‐ and 13C‐NMR, DEPT, COSY, TOCSY, NOESY, HSQC, and HMBC) and mass spectrometry as 3‐O‐β‐D ‐glucopyranosylpresenegenin 28‐{O‐α‐L ‐arabinopyranosyl‐(1→3)‐O‐β‐D ‐xylopyranosyl‐(1→4)‐O‐α‐L ‐rhamnopyranosyl‐(1→2)‐4‐O‐[(E)‐3,4‐dimethoxycinnamoyl]‐β‐D ‐fucopyranosyl} ester ( 1 ) and its (Z)‐isomer 2 , 3‐O‐β‐D ‐glucopyranosylpresenegenin 28‐{O‐α‐L ‐arabinopyranosyl‐(1→4)‐O‐β‐D ‐xylopyranosyl‐(1→4)‐O‐α‐L ‐rhamnopyranosyl‐(1→2)‐O‐[O‐β‐D ‐xylopyranosyl‐(1→3)‐β‐D ‐glucopyranosyl‐(1→3)]‐4‐O‐[(E)‐3,4‐dimethoxycinnamoyl]‐β‐D ‐fucopyranosyl} ester ( 3 ) and its (Z)‐isomer 4 , 3‐O‐β‐D ‐glucopyranosylpresenegenin 28‐{O‐β‐D ‐xylopyranosyl‐(1→4)‐O‐α‐L ‐rhamnopyranosyl‐(1→2)‐O‐[6‐O‐acetyl‐β‐D ‐glucopyranosyl‐(1→3)]‐4‐O‐[(Z)‐3,4‐dimethoxycinnamoyl]‐β‐D ‐fucopyranosyl} ester ( 5 ), and 3‐O‐[(Z)‐feruloyl]‐β‐D ‐fructofuranosyl α‐D ‐glucopyranoside ( 7 ). Compounds 1 – 6 and the known saponins 8 / 9 were evaluated against the human colon cancer cells HCT 116 and HT‐29 and showed moderate to weak cytotoxicity. 相似文献
98.
99.
Jabrane A Ben Jannet H Miyamoto T Tanaka C Mirjolet JF Duchamp O Harzallah-Skhiri F Lacaille-Dubois MA 《Magnetic resonance in chemistry : MRC》2011,49(2):83-89
From the roots of Atriplex glauca L. var. ifiniensis (Caball) Maire (syn. of Atriplex parvifolia Lowe var. genuina Maire), three new saikosaponins designated as glaucasides A-C (1-3) were isolated together with the known 3-O-β-D-glucopyranosyl-(1 → 2)-β-D-galactopyranosyl-saikogenin F (4). The structures of the new compounds were elucidated by extensive analysis of one-dimensional and two-dimensional NMR spectroscopy, FABMS, HR-ESIMS and chemical evidence as 13β,28-epoxy-16β,21β-dihydroxyolean-11-en-3β-yl O-β-D-[2-O-sulfate]-glucopyranosyl-(1 → 2)-α-L-arabinopyranoside (1), 13β,28-epoxy-16β,21β-dihydroxyolean-11-en-3β-yl O-β-D-[2-O-sulfate]-glucopyranosyl-(1 → 2)-α-L-arabinopyranosyl 21-O-{4-(secbutylamido)-butanoyl ester} (2) and 3-O-β-D-glucopyranosyl-(1 → 2)-β-D-galactopyranosyl saikogenin G (3). The cytotoxic activities of these compounds were evaluated against the HT-29 and HCT 116 human colon cancer cell lines. 相似文献
100.
建立了同时测定抗肿瘤中药复方——重楼消瘤方中重楼皂苷Ⅰ、重楼皂苷Ⅱ、重楼皂苷Ⅶ、柴胡皂苷a、柴胡皂苷d 5种皂苷类成分含量的超高效液相色谱-蒸发光散射检测(UPLC-ELSD)法。复方制剂经甲醇提取,采用Waters Cortecs UPLC C18(150 mm×2.1 mm,1.6μm)色谱柱分离,乙腈-水为流动相进行梯度洗脱,蒸发光散射检测器进行检测,以外标法定量。结果显示,5种皂苷类成分的分离度良好,分别在7.1174~177.94μg/mL、 9.4072~235.18μg/mL、 8.8726~221.82μg/mL、 7.4862~187.15μg/mL、9.761 3~244.03μg/mL范围内线性关系良好,相关系数(r)为0.999 2~0.999 8,检出限为0.7~1.0μg/mL,定量下限为1.8~2.4μg/mL;平均回收率分别为93.9%、103%、102%、104%、105%,相对标准偏差(RSD)分别为3.8%、4.0%、4.2%、3.6%、3.2%。该方法简便、快速、准确,可同时对重楼消瘤方中的5个皂苷类成分进行分析,能有效地消... 相似文献