Results 11 to 20 of about 756,054 (237)

Preparation and Antioxidant Activities of Phenylethanoids from Dracocephalum heterophyllum

open access: yesSeparations, 2022
The health benefits of Dracocephalum heterophyllum are widely reported in traditional Tibetan medicines, but the reported chemical composition is limited, probably due to difficulties in separating and purifying compounds.
Yue Lv   +6 more
doaj   +1 more source

Lipophilicity determination of β-hydroxy-β-arilalkanoic acids by reversed phase liquid chromatography under high pressure [PDF]

open access: yesArhiv za farmaciju, 2018
Lipophilicity parameters (logP) were determined for thirteen synthesized β-hydroxy-β-arilalkanoic acids using reversed phase high performance liquid chromatography.
Savić Jelena   +4 more
doaj   +1 more source

Separation of the natural retinoids by high-pressure liquid chromatography

open access: yesJournal of Lipid Research, 1978
A reverse phase high-pressure liquid chromatography system for rapid separation of various retinoids (vitamin A and its analogs) with little or no degradation is described. This method permits detection of as little as 22 pmol of retinoic acid.
C A Frolik, T E Tavela, M B Sporn
doaj   +1 more source

Application of New Supercritical Extraction Technology in Extraction and Separation of Effective Components of Traditional Chinese Medicine [PDF]

open access: yesMATEC Web of Conferences, 2021
Supercritical CO2 extraction technology uses supercritical CO2 fluid as extractant to extract and separate effective components from plants from liquid or solid. At present, CO2 is widely used in supercritical fluid, with a critical temperature of 31.265
Cheng Lijuan
doaj   +1 more source

A Straightforward Method for Glucosinolate Extraction and Analysis with High-pressure Liquid Chromatography (HPLC)

open access: yesJournal of Visualized Experiments, 2017
Glucosinolates are a well-studied and highly diverse class of natural plant compounds. They play important roles in plant resistance, rapeseed oil quality, food flavoring, and human health.
K. Großer, N. V. van Dam
semanticscholar   +1 more source

High pressure liquid chromatography solvent systems for studies of bile acid biosynthesis.

open access: yesJournal of Lipid Research, 1988
Reversed phase high pressure liquid chromatography (HPLC) solvent systems have been developed for the separation of intermediates in the formation of bile acids and bile acid conjugates from cholesterol.
K Prydz, B F Kase, J I Pedersen
doaj   +1 more source

High pressure liquid chromatography of benzimidazolcs

open access: yesPesticide Science, 1976
AbstractA laboratory‐assembled high pressure liquid chromatograph with variable wavelength ultraviolet detector is described. The chromatography of the systemic fungicides benomyl, thiabendazole, thiophanate, related fungicides and benzimidazoles (13 compounds in all) is described using reverse phase and adsorption systems.
Austin, D. J.   +2 more
openaire   +2 more sources

Current developments in LC-MS for pharmaceutical analysis [PDF]

open access: yes, 2002
The current developments in liquid chromatography-mass spectrometry (LC-MS) and its applications to the analysis of pharmaceuticals are reviewed. Various mass spectrometric techniques, including electrospray and nanospray ionization, atmospheric pressure
Lim, Chang-Kee, Lord, Gwyn A.
core   +1 more source

Bacterial Cell Wall Precursor Phosphatase Assays Using Thin-layer Chromatography (TLC) and High Pressure Liquid Chromatography (HPLC)

open access: yesBio-Protocol, 2018
Peptidoglycan encases the bacterial cytoplasmic membrane to protect the cell from lysis due to the turgor. The final steps of peptidoglycan synthesis require a membrane-anchored substrate called lipid II, in which the peptidoglycan subunit is linked to ...
Manuel Pazos   +2 more
doaj   +1 more source

Inhibitory compound produced by Pseudomonas with effectiveness on Vibrio harveyi [PDF]

open access: yes, 2010
Persistence of the antivibrio property of the potential antagonistic probiotics, Pseudomonas MCCB 102 and 103, at di¡erent temperatures, pH and in organic solvents was studied.
Bright Singh, I S   +6 more
core   +1 more source

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