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Sugars liquid chromatography

While there appears to be a profusion of methods for the analysis of carbohydrates in seawater, a study of the actual capabilities of the methods soon reveals that few of them furnish us with much useful information. At the moment only the methods of Johnson and Sieburth [158] and Burney and Sieburth [159], and the bicinchoninate method of Mopper and Gindler [157], furnish any real estimate of the total amount of carbohydrate present in seawater. For the analysis of the separate sugars, liquid chromatography of carbohydrate derivatives would seem to be the obvious choice. Several methods of determining carbohydrates have been described [177-184]. [Pg.399]

HPLC High pressure liquid chromatography. Hudson s isorotadon rule For a pair of sugars... [Pg.206]

The purpose of the experiment is to illustrate the application of derivatisation in the analysis of sugar and related substances by gas-liquid chromatography. The silylation method described is an almost universal derivatisation procedure for carbohydrate analysis by GC.79... [Pg.250]

Dominguez, L. M. and Dunn, R. S., Analysis of OPA-derived amino sugars in tobacco by high-performance liquid chromatography with fluorimetric detection, /. Chromatogr. Sci., 25, 468, 1987. [Pg.194]

Tomiya, N., Suzuki, T., Awaya, J., Mizuno, K., Matsubara, A., Nakano, K., and Kurono, M., Determination of monosaccharides and sugar alcohols in tissues from diabetic rats by high-performance liquid chromatography with pulsed amperometric detection, Anal. Biochem., 206, 98, 1992. [Pg.282]

Gas lasers, 14 681-696 carbon dioxide, 14 693-696 excimer lasers, 14 691-693 helium-neon, 14 681-683 ion lasers, 14 683-688 molecular nitrogen, 14 688-691 Gas lift electrolyte circulation, 9 621 Gas-liquid base stocks, 15 217 Gas-liquid chromatography (glc), 6 374 analysis of sugars via, 23 476 silylation for, 22 692, 697 Gas-liquid contactor, reciprocating jet,... [Pg.392]

This technique is complementary to the thermospray technique. Relative advances of the particles beam technique over thermospray include library searchable electron impact spectra, improved reproducibility, easier use and increased predictability over a broad range of compounds. But since a particle beam requires same sample volatility, very large and polar compounds such as proteins may not provide satisfactory results using particle beam liquid chromatography-mass spectrometry. Additionally, certain classes of compounds such as preformed ions, azo dyes and complex sugars may not yield satisfactory electron impact spectra, but can be run on thermospray. In other words, both liquid chromatography-mass spectrometry techniques complement each other s limitations and the analyst may want to add both to address a broader range of samples. [Pg.56]

Englyst, H.N. and Cummings, J.H. (1984) Simplified method for the measurement of total non-starch polysaccharides by gas-liquid chromatography of constituent sugars as alditol acetates. Analyst 109, 937-942. [Pg.210]

Much data on the structure of flavonoids in crude or semipurified plant extracts have been obtained by HPLC coupled with MS, in order to obtain information on sugar and acyl moieties not revealed by ultraviolet spectrum, without the need to isolate and hydrolyze the compounds. In the last decade, soft ionization MS techniques have been used in this respect, e.g., thermospray (TSP) and atmospheric pressure ionization (API). However, the most used methods for the determination of phenols in crude plant extracts were the coupling of liquid chromatography (LC) and MS with API techniques such as electrospray ionization (ESI) MS and atmospheric pressure chemical ionization (APCI) MS. ESI and APCI are soft ionization techniques that generate mainly protonated molecules for relatively small metabolites such as flavonoids. [Pg.893]

Shaw, D. H., Moss, G. W. (1964). Quantitative estimation of neutral sugars by gas-liquid chromatography. Journal of Chromatography A, 41,350-357. [Pg.247]

The present article is concerned with the use of gas-liquid chromatography for neutral, basic, and acidic sugars and some of their simple derivatives. A succeeding article will treat the separation of methylated sugars and their derivatives. [Pg.13]

Some workers have performed hydrolyses in an autoclave, but it has been shown that 0.5 M sulfuric acid at 120° degrades 33% of L-arabinose and 22% of D-galactose in two hours.75 Such methods are, therefore, only suitable for qualitative analyses, unless accurate corrections are made. Similarly, 90% formic acid has been found76 to decompose 48% of D-xylose and 36% of D-galactose in 20 hours at 100°. Gas-liquid chromatography has been used to examine the products formed by the acid degradation of sugars.77... [Pg.20]

See other pages where Sugars liquid chromatography is mentioned: [Pg.61]    [Pg.1555]    [Pg.449]    [Pg.45]    [Pg.984]    [Pg.105]    [Pg.194]    [Pg.228]    [Pg.253]    [Pg.58]    [Pg.436]    [Pg.795]    [Pg.355]    [Pg.391]    [Pg.195]    [Pg.153]    [Pg.269]    [Pg.260]    [Pg.205]    [Pg.588]    [Pg.751]    [Pg.92]    [Pg.223]    [Pg.37]    [Pg.38]    [Pg.39]    [Pg.44]    [Pg.57]    [Pg.58]    [Pg.78]    [Pg.85]   
See also in sourсe #XX -- [ Pg.708 ]



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Sugar chromatography

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