Resumen

BECQUER ROMAGOSA, Clara; QUERT ALVAREZ, Rolando; CASTINEIRA DIAZ, Mirta  y  CAPOTE HERNANDEZ, Raúl. Determinación de vitamina (a -Tocoferol) en Pinus Caribaea Morelet y Eucalyptus SP.. Rev Cubana Farm [online]. 1996, vol.30, n.2, pp. 0-0. ISSN 1561-2988.

A fast methods of thin layer chromatography for the qualitative and quantitative determination of vitamine E (a -tocopherol) in samples of Pinus caribaea Morelet and Eucalyptus sp. is presented. The ethereal extracts were chromatographied in plates preelaborated with silica gel, for which chloroform was used as a mobile phase. Quantification was carried out by densitometric detection of the compound stains, using a computer controlled system in the modes of reflexion absorbability at a wave longitude of 280 nm. This paper is the first report about the presence of this substance in Cuba. Vitamin E has been found in concentrations of 177 and 2 400 mg/kg of dry drug in pine and eucalyptus respectively.

Palabras clave : VITAMIN E [analysis]; EUCALYPTUS; CHROMATOGRAPHY, THIN LAYER; PLANT EXTRACTS [analysis].