Liquid chromatography-nuclear magnetic resonance , natural

S. C. Bobzin, S. Yang, and T. P. Kasten, Apphcations of Liquid chromatography-nuclear magnetic resonance spectroscopy to the identihcation of natural products, /. Chromatogr. B 748 (2000), 259-267. [Pg.931]

Bohzin, S.C. Yang, S. Kasten, T.P. Application of liquid chromatography-nuclear magnetic resonance spectroscopy to the identification of natural products. J. Chromatogr., B, Biomed. Sci. Appl. 2000, 748, 259 -267. [Pg.912]

Liquid chromatography-nuclear magnetic resonance (LC-NMR) combines the separating power of LC with the structural elucidation capabilities of NMR. It is now possible to separate and elucidate the structures of components in a mixture on-line using this technique. It is most often used to identify natural products, novel compounds and metabolites. [Pg.117]

Yang Z. Online hyphenated liquid chromatography-nuclear magnetic resonance spectroscopy-mass spectrometry for drug metabolite and nature product analysis. J Pharm Biomed Anal 2006 40 516-527. [Pg.367]

Schneider B (2000) Natural products Liquid chromatography-nuclear magnetic resonance. In Wilson ID, Adlard TR, Cooke M, and Poole CF (eds.) Encyclopedia of Separation Science, pp. 3434-3445. London Academic Press. [Pg.2667]

Although saponification was found to be unnecessary for the separation and quantification of carotenoids from leafy vegetables by high performance liquid chromatography (HPLC) or open column chromatography (OCC), saponification is usually employed to clean the extract when subsequent purification steps are required such as for nuclear magnetic resonance (NMR) spectroscopy and production of standards from natural sources. [Pg.452]

SD standard deviation SDE simultaneous distillation extraction SDS sodium dodecyl sulfate SFC solid fat content SFI solid fat index SHAM salicylhydroxamic acid SIM selected ion monitoring SNIF-NMR site-specific natural isotope fractionation measured by nuclear magnetic resonance spectroscopy SP-HPLC straight-phase high-performance liquid chromatography... [Pg.1309]

Liquid chromatography (LC) has already been described and is an excellent separation technique for compounds that are nonvolatile, thermally unstable and relatively polar in nature. The usual detectors for LC are based on refractive index, conductivity, amperometry, light scattering, UV and fluorescence, all of which have been discussed in Section 3.2. However, sometimes it is desirable to have a more powerful detector attached to an LC instrument and, as such, the following combinations are possible LC-infrared spectrometry, LC-atomic spectrometry, LC-inductively coupled plasma-mass spectrometry, LC-mass spectrometry, LC-UV-mass spectrometry, LC-nuclear magnetic resonance and even LC-nuclear magnetic resonance-mass spectrometry. [Pg.108]

Efficient detection and rapid characterisation of natural products play an important role as an analytical support in the word of phytochemists. The identification of a metabolite at the earliest stage of separation is a strategic element for guiding an efficient and selective isolation procedure. In this respect, the role of hyphenated techniques such as high performance liquid chromatography coupled to mass spectrometry (LC/MS) or to nuclear magnetic resonance (LC/NMR) has became of great interest. [Pg.233]

Dai DM, He JM, Sun RX, Zhang RP, Haji AA, Abliz Z. Nuclear magnetic resonance and liquid chromatography—mass spectrometry combined with an incompleted separation strategy for identif5nng the natural products in crude extract. Anal Chim Acta 2009 632 221-228. [Pg.610]

See also Infrared Spectroscopy Overview Sample Presentation Industrial Applications. Liquid Chromatography Size-Exclusion. Microscopy Overview Microscopy Techniques Light Microscopy Scanning Electron Microscopy. Nuclear Magnetic Resonance Spectroscopy Overview. Textiles Natural. [Pg.4749]