Results 41 to 50 of about 318,662 (245)

Performance of Electropun Polyacrylonitrile Nanofibrous Phases, Shown for the Separation of Water-Soluble Food Dyes via UTLC-Vis-ESI-MS [PDF]

open access: yes, 2006
Research in the miniaturization of planar chromatography led to various approaches in manufacturing ultrathin-layer chromatography (UTLC) layers of reduced thickness (
Andrew, Lachlan L. H.   +3 more
core   +2 more sources

Preparative thin-layer and column chromatography of prostaglandins

open access: yesJournal of Lipid Research, 1969
Analytical and preparative chromatographic methods for monounsaturated prostaglandins are described. The systems were developed specifically for separation of the various hydroxy epimers of prostaglandin E1 and F1 but also offer superior separations for ...
Niels H. Andersen
doaj   +1 more source

Isolasi Dan Identifikasi Struktur Karotenoid Dari Ekstrak Bayam Merah (Amaranthus Tricolor L.) [PDF]

open access: yes, 2014
Amaranthus tricolor L. was reported as source of carotenoid compounds (tetraterpenoids) which is a natural pigments and has bioactivity as antioxidants. They are beneficial to health.
Sulistyaningrum, N. (Novi)
core  

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

Thin-layer chromatography of tissue lipids without extraction

open access: yesJournal of Lipid Research, 1970
Frozen tissue sections were applied directly to silica gel plates, and the lipids were separated by developing the plates in different solvent systems.
George D. Cherayil, K.S. Scaria
doaj   +1 more source

Seagrass Posidonia oceanica (L.) Delile as a marine biomarker: A metabolomic and toxicological analysis [PDF]

open access: yes, 2018
A human-made environmental disaster due to the shipwrecked of Costa Concordia cruise vessel on the Tuscan Island of Giglio (Italy) coast and the possible pollutants release has been feared, so requiring the activation of removal operations and the ...
Agostini   +39 more
core   +1 more source

Obtenção de biodiesel por transesterificação em dois estágios e sua caracterização por cromatografia gasosa: óleos e gorduras em laboratório de química orgânica

open access: yesQuímica Nova, 2013
Methanolic transesterification of oils and fats was carried out in a two steps procedure, under basic and acidic catalysis. Palm, soybean, canola, corn, rice, grapeseed, sunflower, peanut, pequi and olive oils, besides tallow and lard were used as ...
Diogo Müller de Oliveira   +9 more
doaj   +1 more source

"Dry-column" chromatography of plant pigments [PDF]

open access: yes, 1973
Separation of plant pigments which can be accomplished on thin-layer silica plates with mixture of petroleum ether, halocarbon, acetone, and polar solvent can be readily translated into dry-column technique that yields reproducible chromatograms after ...
Lehwalt, M. F.   +2 more
core   +1 more source

Chemical analysis of soluble fractions from normal and autolysed rabbit liver by column chromatography [PDF]

open access: yes, 1966
Chromatography on Sephadex G-200 was performed with the soluble fraction of homogenated rabbit liver, which was extracted with 0.1 M phosphate buffer containing 0.1 M NaCl.
Aizawa, Tadashi   +4 more
core   +1 more source

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