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1.
J AOAC Int ; 85(3): 563-6, 2002.
Article in English | MEDLINE | ID: mdl-12083248

ABSTRACT

A gas chromatographic method using a packed column and 1-eicosanol as an internal standard was validated for the determination of the fatty alcohols that compose policosanol in 10 mg film-coated tablets. The alcohols were determined as trimethylsilyl derivatives, prepared with N-methyl-N-trimethylsilyltrifluoroacetamide. The method can detect degradation products with high retention times, without interfering with the peaks of the active principle. Good linearity (correlation coefficient = 0.9992) and accuracy (mean recovery -100.27 +/- 1.66%) were proven over a range of 25-200% of the nominal concentration. Within- and between-day precision at the nominal 100% value met the acceptance criteria (<2%). Ruggedness was examined through an intralaboratory experimental study in which 6 operational changes were made; the changes were found to have no effect on quantitation, repeatability, resolution, and relative retention time. The method is suitable for the quality control process and stability studies of these tablets.


Subject(s)
Chromatography, Gas/methods , Fatty Alcohols/analysis , Tablets
2.
Rev. cuba. farm ; 24(1): 99-108, ene.-abr. 1990. tab
Article in Spanish | LILACS | ID: lil-92561

ABSTRACT

Se estudió la composición química del aceite esencial de Eucalyptus grandis (Hill ex Maiden), obtenido de plantas cultivadas en la Estación Experimental de Topes de Collantes, provincia de Sancti Spiritus, mediante la cromatografía gaseosa, la espectroscopía infrarroja y el sistema acoplado cromatografía gaseosa-espectometría de masas. Se determinó que el aceite esencial de E. grandis está formado por una mezcla compleja de componentes, de los cuales se identificaron 42


Subject(s)
Chromatography, Gas , Eucalyptus/analysis , Plant Oils/isolation & purification
3.
Rev. cuba. farm ; 24(1): 99-108, ene.-abr. 1990. tab
Article in Spanish | CUMED | ID: cum-1614

ABSTRACT

Se estudió la composición química del aceite esencial de Eucalyptus grandis (Hill ex Maiden), obtenido de plantas cultivadas en la Estación Experimental de Topes de Collantes, provincia de Sancti Spiritus, mediante la cromatografía gaseosa, la espectroscopía infrarroja y el sistema acoplado cromatografía gaseosa-espectometría de masas. Se determinó que el aceite esencial de E. grandis está formado por una mezcla compleja de componentes, de los cuales se identificaron 42


Subject(s)
Eucalyptus , Plant Oils/isolation & purification
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