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protopanaxatriol/panax
Ο σύνδεσμος αποθηκεύεται στο πρόχειρο
Σελίδα 1 από 180 Αποτελέσματα
Production of aglycone protopanaxatriol from ginseng root extract using Dictyoglomus turgidum β-glycosidase that specifically hydrolyzes the xylose at the C-6 position and the glucose in protopanaxatriol-type ginsenosides.
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Σύνδεση εγγραφή
The hydrolytic activity of a recombinant β-glycosidase from Dictyoglomus turgidum that specifically hydrolyzed the xylose at the C-6 position and the glucose in protopanaxatriol (PPT)-type ginsenosides followed the order Rf > Rg₁ > Re > R₁ > Rh₁ > R₂. The production of aglycone protopanaxatriol
A novel strategy for rapid quantification of 20(S)-protopanaxatriol and 20(S)-protopanaxadiol saponins in Panax notoginseng P. ginseng and P. quinquefolium.
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Σύνδεση εγγραφή
A novel strategy for the qualitative and quantitative determination of 20(S)-protopanaxatriol saponins (PTS) and 20(S)-protopanaxadiol saponins (PDS) in Panax notoginseng, Panax ginseng and Panax quinquefolium, based on the overlapping peaks of main components of PTS (calibrated by ginsenoside Rg1)
Complete conversion of all typical glycosylated protopanaxatriol ginsenosides to aglycon protopanaxatriol by combined bacterial β-glycosidases.
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Σύνδεση εγγραφή
Aglycon protopanaxatriol (APPT) has valuable pharmacological effects such as anti-inflammatory and anti-stress activities. However, the complete conversion of all typical glycosylated protopanaxatriol ginsenosides to APPT has not been achieved to date. β-Glycosidase from the hyperthermophilic
Bioactive protopanaxatriol type saponins isolated from the roots of Panax notoginseng (Burk.) F. H. Chen.
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Seven new protopanaxatriol type saponins, 20S-sanchirhinosides A1 (1), A2 (2), A3 (3), A4 (4), A5 (5), and A6 (6), and sanchirhinoside B (7) were obtained as minor constituents from the root extract of Panax notoginseng (Burkill, F. H. Chen), which showed protection effects against antimycin A
Simultaneous determination of notoginsenoside R₁, ginsenoside Rg₁, ginsenoside Re and 20(S) protopanaxatriol in beagle dog plasma by ultra high performance liquid mass spectrometry after oral administration of a Panax notoginseng saponin preparation.
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Σύνδεση εγγραφή
20(S) protopanaxatriol is the main metabolite of notoginsenoside R1, ginsenoside Rg1, ginsenoside Re in Panax notoginseng and has significant activities. A ultra high performance liquid mass spectrometry method has been developed and validated for the simultaneous determination of notoginsenoside R₁
Integrated Chemical and Transcriptomic Analysis Reveals the Distribution of Protopanaxadiol- and Protopanaxatriol-Type Saponins in Panax notoginseng.
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Panax notoginseng is famous for its important therapeutic effects and commonly used worldwide. The active ingredients saponins have distinct contents in different tissues of P. notoginseng, and they may be related to the expression of key genes in the synthesis pathway. In our study,
Structure and biological activity of protopanaxatriol-type saponins from the roots of Panax notoginseng.
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Σύνδεση εγγραφή
The further purification of the total saponins from the roots of Panax notoginseng by using ordinary and reversed-phase silica-gel, as well as Sephadex LH-20 chromatography afford seven adjuvant active protopanaxatriol-type saponins (PTS), ginsenosides-Rh1 (Rh1),-Rh4 (Rh4),-Rg1 (Rg1),-Re (Re),
Panax ginseng extract rich in ginsenoside protopanaxatriol offers combinatorial effects in nitric oxide production via multiple signaling pathways.
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Σύνδεση εγγραφή
The root of Panax ginseng C.A. Meyer has been shown to induce nitric oxide (NO) release resulting in a hypotensive effect. However, the main active component contributing to vascular endothelium relaxation remains uncertain. In this study, we hypothesized that multiple components of ginseng extract
Inhibitory effect of protopanaxatriol ginseng metabolite M4 on the production of corticosteroids in ACTH-stimulated bovine adrenal fasciculata cells.
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OBJECTIVE
We investigated the pharmacological effects of saponins isolated from ginseng root and their metabolites, which occur by hydrolysis of the sugar moieties connecting the aglycone of saponins in the digestive tract, on the production of corticosteroids in bovine adrenal fasciculata cells in
Comparison of the antiobesity effects of the protopanaxadiol- and protopanaxatriol-type saponins of red ginseng.
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A previous study demonstrated that ginseng crude saponins prevent obesity induced by a high-fat diet in rats. Ginseng crude saponins are known to contain a variety of bioactive saponins. The present study investigated and compared the antiobesity activity of protopanaxadiol (PD) and protopanaxatriol
Enzymatic preparation of ginsenosides Rg2, Rh1, and F1 from protopanaxatriol-type ginseng saponin mixture.
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During investigations on the hydrolysis of a protopanaxatriol-type saponin mixture by various glycoside hydrolases, it was found that two minor saponins, ginsenosides Rg 2 and Rh 1, were formed in high yields by crude beta-galactosidase from Aspergillus oryzae and crude lactase from Penicillium sp.,
Photoprotective properties of 20(S)-protopanaxatriol, an aglycone of ginseng saponins: Protection from ultraviolet-B radiation-induced oxidative stress in human epidermal keratinocytes.
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Σύνδεση εγγραφή
Ginsenosides are responsible for diverse pharmacological properties ascribed to ginseng, a plant used in traditional medicine. Ginsenosides are classified into three categories: Protopanaxadiol, protopanaxatriol (PPT) and oleanolic acid. As an aglycone of PPT-type ginsenosides, PPT exists in two
Complete biotransformation of protopanaxatriol-type ginsenosides in Panax ginseng leaf extract to aglycon protopanaxatriol by β-glycosidases from Dictyoglomus turgidum and Pyrococcus furiosus.
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Σύνδεση εγγραφή
Aglycon protopanaxatriol (APPT) has valuable pharmacological effects such as memory enhancement and tumor inhibition. β-Glycosidase from the hyperthermophilic bacterium Dictyoglomus turgidum (DT-bgl) hydrolyzes the glucose residues linked to APPT, but not other glycoside residues. β-Glycosidase from
Gas chromatographic-mass spectrometric determination of 20(S)-protopanaxadiol and 20(S)-protopanaxatriol for study on human urinary excretion of ginsenosides after ingestion of ginseng preparations.
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Σύνδεση εγγραφή
An improved gas chromatographic-mass spectrometric method (GC-MS) with a fast solid-phase extraction on a newly introduced C18 microcolumn, was applied to study the urinary excretion 20(S)-protopanaxadiol and 20(S)-protopanaxatriol glycosides in man after oral administration of ginseng preparations.
Adjuvant effects of protopanaxadiol and protopanaxatriol saponins from ginseng roots on the immune responses to ovalbumin in mice.
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Σύνδεση εγγραφή
Protopanaxadiol saponins (Rg3, Rd, Rc, Rb1 and Rb2) and protopanaxatriol saponins (Rg1, Re and Rg2) isolated from the root of Panax ginseng C.A. Meyer were evaluated for their adjuvant effects on the immune responses to ovalbumin (OVA) in mice. BALB/c mice were subcutaneously injected twice at a
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