Analyses of phytosterols and free radical scavengers in the bulbs of Ornithogalum cuspidatum Bertol
Titel:
Analyses of phytosterols and free radical scavengers in the bulbs of Ornithogalum cuspidatum Bertol
Auteur:
Abbas DELAZAR Ehsan NAZIFI Ali MOVAFEGHI Hossein NAZEMIYEH Salar HEMMATI Lutfun NAHAR Satyajit D. SARKER
Verschenen in:
Boletín latinoamericano y del Caribe de plantas medicinales y aromáticas
Paginering:
Jaargang 9 (2010) nr. 2 pagina's 87-92
Jaar:
2010
Inhoud:
The gas chromatography-mass spectrometry (GC-MS) analyses of the methanol (MeOH) extract of the bulbs of Ornithogalum cuspidatum led to the identification of thirteen phytosterols, namely cholesterol, 3,5-didehydro-stigmastan-6,22-diene, 4,4-dimethyl-5a-cholest-7-en-3-one, 4B-methyl-cholesterol, 5-cholestene-3b,7b-diol, campesterol, cholest-4-ene-3,6-dione, stigmast-4-en-3-one, stigmasta-3,5-dien-7-one, stigmasterol, A5-ergostenol, B-sitosterol, y-sitosterol The free radical scavenging activity of the MeOH extract, and its solid-phase extraction fractions were assessed by the 2,2-diphenyl-1-picryl hydrazyl (DPPH) assay, and the 40% MeOH-water fraction showed the highest degree of free radical scavenging property (RC50 8.87 x 10-2 mg/mL), compared to that of the positive controls Trolox® and quercetin 3.07 x 10-3 and 2.78 x 10-4 mg/mL, respectively. The 40% MeOH-water fraction also had the highest level of total phenolics content.
Uitgever:
Sociedad Latinoamericana de Fitoquímica (provided by DOAJ)