HPTLC on inert pre-coated layers of cellulose and of silica 50000

Hauck, H. E.; Halpaap, H.

doi:10.1007/bf02311857

Cited by 18 publications

(6 citation statements)

References 71 publications

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“…Conditions for their separation on Si 50000 H P T L C plates were optimized, using a solvent system similar to that used earlier [1], consisting of n-propanol/water/25% NH3. Conditions for their separation on Si 50000 H P T L C plates were optimized, using a solvent system similar to that used earlier [1], consisting of n-propanol/water/25% NH3.…”

Section: Resultsmentioning

confidence: 99%

“…A novel synthetic porous silica, Si 50000, has proven very useful for separating polar analytes such as amino acids [1] and sugars [1 3] by HPTLC. Si 50000 has an extremely large pore diameter (5000 nm) and a low surface area of about 0.5 m2/g [1].…”

Section: Introductionmentioning

confidence: 99%

“…Other HPTLC quality silica gels have a pore diameter of about 6 nm and a surface area of about 500 m2/g [4]. The low surface activity [1] of Si 50000 results in minimal spot tailing of polar compounds such as carbohydrates.…”

Section: Introductionmentioning

confidence: 99%

“…Optimal HPTLC resolution of monosaccharides on Si 50000 was obtained using a single development with a solvent system consisting of n-propanol/water/25% NH3 [1]. When other silica gels were used [5 8] as stationary phases, multiple plate developments were required in order to achieve comparable resolution of sugars.…”

Section: Introductionmentioning

confidence: 99%

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Determining sugar composition of food gum polysaccharides by HPTLC

Doner

2001

Chromatographia

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Most commercially important food gums, including gum arabic, guar gum, and carrageenan are polysaccharides which consist of multiple sugars, including uronic acids. For the first time, the sugars in these and other gums were determined by comparison of R F values with standards by HPTLC on Si 50000 plates after acid hydrolysis of the polysaccharides. The solvent system consisted of n propanol:water:triethylamine:30% NH3 (80:20:0.2:4). Analysis was rapid, as the separations were accomplished using a single plate development and the sugars were located by simple charring. Sugar separations on Si 50000 with this solvent system are more efficient than others and provide the additional advantage over bonded-phase silicas in that sugars can be detected using aggressive methods.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Determining sugar composition of food gum polysaccharides by HPTLC

Doner

2001

Chromatographia

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“…The mean particle size and the particle size distribution correspond to HPTLC quality. Typical applications of this wide-pore material in partition chromatography are separations of amino acids (76), carbohydrates (77)(78)(79), and digitalis glycosides (80).…”

Section: Silica 50000mentioning

confidence: 99%