Thin-layer chromatography methods on the preparative and analytical scale are presented for the separation of porphyrin methyl esters according to the number of ester groups in each porphyrin. Complete and sharp separations are obtained on silica gel glass plates or aluminium cards run in benzene-ethyl acetate-methanol solvent systems. Dicarboxylic porphyrin esters from proto-, deuteroand hemat...

Pinda Taila is a medicated oil used Ayurveda for vaatharakta, the aim of the present study is to fix physicochemical standards for the above Taila. Though the analytical values can be as preliminary reference standards, these values are mostly related to the purity of the sesame oil, the thin layer chromatography (TLC) studies of the Taila are more useful to detect the presence of single drugs ...

Ten strains of endophytic fungi were isolated from the bulbs of the traditional Chinese medicinal plant Fritillaria ussuriensis. The extract from one of them, Fu7, showed a positive reaction with Dragendorff's reagent and the same Rf value in thin-layer chromatography (TLC) analysis as authentic sipeimine. A further TLC scan and high-performance liquid chromatography-evaporative light-scatterin...

The development of ultrathin-layer silica gel plates with a monolithic structure opens up a new dimension in thin-layer chromatography (TLC). The very small layer thickness of approximately 10 microm and the absence of any kind of binder in combination with the framework of this stationary phase lead to new and improved properties of these ultrathin-layer chromatographic (UTLC) silica-gel plate...

A faster and more efficient way of isolating and subsequently cleaning up the sterol fraction obtained from seed oils was developed based on an existing established method that used thin-layer chromatography (TLC) to isolate the sterol fraction (3). The newly developed method used solidphase extraction (SPE) to separate the sterol fraction from other compounds found in the unsaponifiable portio...

Submit Manuscript | http://medcraveonline.com Abbreviations: NMR: Nuclear Magnetic Resonance; HPLC: High Performance Liquid Chromatography; RP-HPLC: Reverse Phase High Performance Liquid Chromatography; HPTLC: High Performance Thin Liquid Chromatography; TLC: Thin Liquid Chromatography; API’s: Active Pharmaceutical Ingredient’s; LOD: Limit of Detection; LOQ: Limit of Quantitation; FTIR: Fourier...

Thin-layer or planar chromatography (TLC) continues to evolve, albeit at a slower pace than its more powerful counterparts, liquid and gas chromatography. This is easy understand as TLC has always been very simple alternative these methods without the need for complex instrumentation. does not mean, however, that cannot be combined with sophisticated detection such mass spectrometry performed i...

———————————————————————————————— ————————————————————————————————— 3 Abstract An analytical technique to combine TLC with MS was developed. The initial study was carried out on a graphite plate, which functions as a photon absorbing material. A continuous wave diode laser replaced traditional pulsed lasers as the desorption source, which was employed for this purpose for the first time. The the...

In this paper, two of the new antipyrine heterocyclic derivatives have been synthesized via formation Schiff bases. The bases compounds were generated from reaction 4-Ameno-antipyrine (4-AAP) with 3- hydroxybenzaldehyde and 4- nitrobenzaldehyde, which was converted to imidazolidinone by glycine. reactions monitored Thin Layer Chromatography (TLC). structure prepared confirmed physical available...

Given that fermented dairy products exhibit high bioactivities against cardiovascular diseases (CVDs), the anti-thrombotic properties, fatty acid profiles and sensory properties of cow, goat and ewe derived Greek yogurts have been assessed and compared. The total lipids (TL), total polar lipids (TPL), total neutral lipids (TNL) were obtained and the polar lipid fractions were further separated ...