Results 21 to 30 of about 460,559 (312)

Validation of a chromatographic method to routine analysis of trans-resveratrol and quercetin in red wines [PDF]

open access: yesPesquisa Agropecuária Brasileira, 2017
: The objective of this work was to validate a fast method with low-solvent use, for the analysis of trans-resveratrol and quercetin in red wines. The wines were prepared, using a classical method, from the grape (Vitis vinifera) cultivars Cabernet Franc,
Letícia Flores da Silva   +4 more
doaj   +1 more source

Taxonomic study and partial characterization of antimicrobial compounds from a moderately halophilic strain of the genus Actinoalloteichus [PDF]

open access: yes, 2011
A moderately halophilic actinomycete strain designated AH97 was isolated from a saline Saharan soil, and selected for its antimicrobial activities against bacteria and fungi.
Boudjelal, Farida   +4 more
core   +3 more sources

Analysis of ochratoxin A in pig tissues using high pressure liquid chromatography (HPLC) and liquid chromatography tandem mass spectrometry (LC/MS/MS) as confirmative methods [PDF]

open access: yesZbornik Matice Srpske za Prirodne Nauke, 2009
Two different analytical methods for the determination and confirmation of ochratoxin A (OTA) in blood serum, kidney and liver of pigs have been compared. Sample clean-up was based on liquid-liquid phase extraction.
Milićević Dragan R.   +4 more
doaj   +1 more source

Toxicological Analysis of Some Drugs of Abuse in Biological Samples [PDF]

open access: yes, 2015
Consumption of drugs of abuse is a scourge of modern world. Abuse, drug addiction and their consequences are one of the major current problems of European society because of the significant repercussions in individual, family, social and economic level ...
Baconi, Daniela Luiza   +5 more
core   +3 more sources

Numerical Simulation of Fluid Dynamics in a Monolithic Column

open access: yesSeparations, 2017
As for the measurement of polycyclic aromatic hydrocarbons (PAHs), ultra-performance liquid chromatography (UPLC) is used for PAH identification and densitometry.
Kazuhiro Yamamoto, Yuuta Tajima
doaj   +1 more source

Analysis of total urinary catecholamines by liquid chromatography: methodology, routine experience and clinical interpretations of results [PDF]

open access: yes, 1983
A simple routine method is described for simultaneous assay of total urinary adrenaline, noradrenaline and dopamine. The catecholamines are pre-purified on a small ion-exchange column, separated by reversed phase ion-pair liquid chromatography, and are ...
Kees, Frieder K.   +2 more
core   +1 more source

Fast determination of biogenic amines in beverages by a core-shell particle column [PDF]

open access: yes, 2015
A fast and reliable HPLC method for the determination of 11 biogenic amines in beverages has been performed. After pre-column derivatization with dansyl-chloride a Kinetex C18 core–shell particle column (100 mm × 4.6 mm, 2.6 μm particle size) has been ...
Giuliana Vinci   +3 more
core   +1 more source

The separation of sterol intermediates in cholesterol biosynthesis by high pressure liquid chromatography

open access: yesJournal of Lipid Research, 1980
A three-step procedure has been developed for the separation of complex mixtures of sterol intermediates in cholesterol biosynthesis. The method has been applied to the separation of sterol intermediates formed from [14C]mevalonate by normal rat ...
E Hansbury, T J Scallen
doaj   +1 more source

Review of High-Speed Countercurrent Chromatography in Separation of Lanthanides and Actinides

open access: yesHe huaxue yu fangshe huaxue, 2022
In the field of radiochemistry, separation of lanthanides and actinides has always been one of the research hotspots. In order to achieve the burnup analysis, the lanthanide and actinide elements in the solution need to be separated.
LI Yu-hao   +6 more
doaj   +1 more source

Recent developments in the rapid analysis of plants and tracking their bioactive constituents [PDF]

open access: yes, 2009
Natural products chemistry has witnessed many new developments in the last 5 years like extractions with subcritical water and ionic liquids, LC/HRMS and LC/SPE/cryo-NMR, UHPLC, TLC/MS, MS-based preparative HPLC, comprehensive chromatography (GC × GC, LC
Beek, T.A., van   +7 more
core   +2 more sources

Home - About - Disclaimer - Privacy