Results 41 to 50 of about 786,883 (190)

Clarification of the Saponin Composition of Tubers

open access: yesNatural Product Communications, 2006
Six known saponins, glycosides of hederagenin and oleanolic acid, have been isolated from the tubers of Ranunculus ficaria L. (Ranunculaceae). Their separation included the use of centrifugal partition chromatography (CPC).
Andrew Marston   +5 more
doaj   +1 more source

Counter-current chromatography for the separation of terpenoids: A comprehensive review with respect to the solvent systems employed [PDF]

open access: yes, 2014
Copyright @ 2014 The Authors.This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited.Natural ...
Skalicka-Woźniak, K   +3 more
core   +1 more source

Extensive Phytochemical Assessment of Hook (Orchidaceae)

open access: yesNatural Product Communications, 2022
Dendrobium fimbriatum Hook is an important medicinal and ornamental orchid that may lead to important drugs and cosmetics. In this study, 2 analytical strategies were combined to describe the detailed composition of a hydroethanolic extract of the whole ...
Quentin Favre-Godal   +8 more
doaj   +1 more source

Advanced modelling and visualisation of liquid-liquid separations of complex sample components, with variable phase distribution and mode of operation [PDF]

open access: yes, 2013
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.This research is about liquid-liquid chromatography modelling.
De Folter, Jozefus Johannes Martinus
core   +6 more sources

Structural Elucidation of Novel Saponins in the Sea Cucumber Holothuria lessoni

open access: yesMarine Drugs, 2014
Sea cucumbers are prolific producers of a wide range of bioactive compounds. This study aimed to purify and characterize one class of compound, the saponins, from the viscera of the Australian sea cucumber Holothuria lessoni.
Yadollah Bahrami   +3 more
doaj   +1 more source

Conformational Switching of Proteins on Material Surfaces Enabled by Peptide‐Oriented Adsorption

open access: yesAdvanced Functional Materials, EarlyView.
Responsive biointerfaces could be achieved using conformationally responsive proteins; however, their interconversion can be lost upon surface adsorption. Herein, we demonstrate that the incorporation a Au binding peptide into calmodulin allows for binding control on Au wherein the protein retains conformational switching. This capability was confirmed
Sakthirupini Ramamurthy   +7 more
wiley   +1 more source

Remote Activation of Wnt Signaling and Cell Proliferation by E‐Cadherin Magnetomechanical Stimulation

open access: yesAdvanced Functional Materials, EarlyView.
A pioneering magnetogenetic toolkit enables non‐invasive, precise spatiotemporal modulation of intracellular Wnt/β‐catenin signaling. Functionalized magnetic nanoparticles (MNPs@E/EC15) target cellular E‐cadherins to generate localized magnetomechanical forces under low‐intensity magnetic fields.
Christian Castro‐Hinojosa   +7 more
wiley   +1 more source

Gonadotropin‐Inhibitory Hormone (GnIH) and Its Receptor GPR147 Mediates Acute Stress‐Induced Activation of the Locus Coeruleus‐SAM Axis

open access: yesAdvanced Science, EarlyView.
ABSTRACT Gonadotropin‐inhibitory hormone (GnIH, also known as RFamide‐related peptide‐3, RFRP‐3) is a hypothalamic neuropeptide that regulates vertebrate reproduction via its receptor GPR147. Although GnIH is known to mediate stress‐induced reproductive suppression, its role in broader stress responses remains unclear.
Jiani Zhang   +18 more
wiley   +1 more source

Monoclonal antibody (mAb) purification by counter current chromatography (CCC) [PDF]

open access: yes, 2011
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.Counter current chromatography (CCC) is a form of liquid liquid chromatography, which the Brunel Institute for Bioengineering (BIB) team have developed to ...
Fernando, Samantha
core   +6 more sources

Isolation of N-Ethyl-2-pyrrolidinone-Substituted Flavanols from White Tea Using Centrifugal Countercurrent Chromatography Off-Line ESI-MS Profiling and Semi-Preparative Liquid Chromatography

open access: yesMolecules, 2021
N-Ethyl-2-pyrrolidinone-substituted flavanols (EPSF) are marker compounds for long-term stored white teas. However, due to their low contents and diasteromeric configuration, EPSF compounds are challenging to isolate.
Weidong Dai   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy