Thin-layer systems giving maximum separation of α- and β-tocopherols

✍ Scribed by P.G. Roughan

• Book ID: 104144213
• Publisher: Elsevier Science
• Year: 1967
• Tongue: English
• Weight: 288 KB
• Volume: 29
• Category: Article
• ISSN: 1873-3778
• DOI: 10.1016/s0021-9673(00)92667-0

✦ Synopsis

Thin-layer systems giving maximum separation of at-and pltocopherols

No thin-layer adsorption technique has been described which will resolve CP and /3-tocopherol as effectively as zinc carbonate impregnated paperl. SENER~ has reported useful separations of tocopherols on thin layers of alumina with benzene as developing solvent and on silica gel with chloroform as solvent. DILLEV AND CRANES separated.

c+ and /?-tocopkerol on Silica Gel G using benzene and BOLLIGER* reported better separation on Silica Gel G with benzene-methanol (98: 2) than with cyclohexanediethyl ether (80: 20). Secondary magnesium phosphate, which gives a useful separation of cd-and /3-tocopherols by column chromatography", proved slightly inferior to. silica gel as a thin layer*.

SCHMANDKE~, however, reported an excellent separation of cc-from y-tocopherol (which should migrate close to &tocopherol) on a mixed layer of alumina-zinc carbonate (3 : I) with chloroform as developing solvent, A mixed layer of silica gel-