Wyniki wyszukiwania - BazTech

Ograniczanie wyników

2 Acta Chromatographica

2 2013

Powiadomienia systemowe

Sesja wygasła!

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Simultaneous determination of lycorine and galanthamine in Galanthus woronowii by HPLC-DAD

Emir A., Cicek-Polat D., Kaya G., Sarikaya B., Onur M. A., Unver-Somer N.

Acta Chromatographica

2013

Vol. 25, no. 4

755--764

Galanthamine, used as a drug for the treatment of Alzheimer’s disease and lycorine possessing important biological properties, are widely distributed alkaloids in the members of Amaryllidaceae family. In the present study, the contents of these alkaloids have been quantitatively determined by high-performance liquid chromatography (HPLC) coupled with diode array detector (DAD) in the aerial parts and bulbs of Galanthus woronowii Losinsk. collected from different localities in Northeastern Turkey. A simple extraction method utilizing columns pre-packed with diatomaceous earth (Extrelut®) was used. Chromatographic separation was achieved using an isocratic system with a mobile phase of trifluoroacetic acid-water-acetonitrile (0.01:90:10) applied at a flow rate of 1 mL min. -1. Validation studies were also carried out to show that the method is specific, accurate, and precise. In the tested specimens, the lycorine content ranged between 0.008 and 0.364% whereas the galanthamine content was found to be between 0.003 and 0.506%.

Quantitative analysis of lycorine in endemic Galanthus xvalentinei nothosubsp. subplicatus by HPLC-DAD

Unver-Somer N., Cicek-Polat D., Emir A., Onur M. A., Kaya G. I.

Acta Chromatographica

2013

Vol. 25, no. 2

331-338

Galanthus xvalentinei (J. Allen) Beck nothosubsp. subplicatus (N. Zeybek) A. P. Davis (Amaryllidaceae) is an endemic hybrid between G. nivalis L. and G. plicatus M. Bieb. subsp. byzantinus (Baker) D. A. Webb. Lycorine, a common alkaloid found in Amaryllidaceae plants, has been shown to display important biological activities. In the present study, a reversed-phase high-performance liquid chromatographic method has been used for the quantitative determination of lycorine in the aerial parts and bulbs of G. xvalentinei nothosubsp. subplicatus. A simple method for the extraction of lycorine in lowmass plant samples was employed utilizing pre-packed columns with diatomaceous earth (Extrelut®). The chromatographic separation was carried out using an isocratic system with a mobile phase of trifluoroacetic acid-water-acetonitrile (0.01:95:5) applied at a flow rate of 1 mL min -1 using diode array dedector. The content of lycorine in the bulbs of G. xvalentinei nothosubsp. subplicatus was found to be 0.0028%, however, it was not detected in the aerial parts of this hybrid.