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Title: 2D LC as a tool for standardization of Foenugraeci semen extracts containing compounds with anti-Helicobacter pylori activity. Author: Król-Kogus B, Głód D, Hałasa R, Krauze-Baranowska M, Pobłocka-Olech L. Journal: Food Funct; 2021 Mar 21; 12(6):2686-2692. PubMed ID: 33660729. Abstract: The on-line heart-cutting two-dimensional liquid chromatography method with the use of a diode array detector and a mass spectrometer (LC-LC-DAD-ESI-MS) was established and validated for quantitation of C-glycosylflavones in fenugreek seeds (Foenugraeci semen, Trigonella foenum-graecum L.). The first- (1D) and second- (2D) dimensional separations were performed on Kinetex C-18 columns with different diameters, respectively, and gradient (1D) and isocratic elution (2D). Finally, 17 compounds were separated, 13 of which were quantified by 1D separation and 4 compounds by 2D separation. As a result, it was pointed out that fenugreek seeds of Polish origin can be considered as a rich source of C-glycosylflavones. Antibacterial activity against Helicobacter pylori of standardized 70% methanol extract from fenugreek seeds has been demonstrated, in contrast to the inactive aqueous extract. Anti-H. pylori activity of the 70% methanol extract can be related to a higher concentration of C-glycosylflavones. This is the first report on the bactericidal activity of vitexin, diosgenin, tigogenin and sarsasapogenin against H. pylori and the bacteriostatic activity of orientin against this bacterium.[Abstract] [Full Text] [Related] [New Search]