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@article{571881, author = {KLEJDUS, Bořivoj and Mikelová, Radka and Adam, Vojtěch and ZEHNÁLEK, Josef and VACEK, Jan and Kizek, René and Kubáň, Vlastimil}, article_number = {1-2}, keywords = {accelerated solvent extraction; daidzin; foodstuffs; genistin; high-performance liquid chromatography; isoflavones; mass spectrometry; solvent extraction; Soxhlet extraction; soybean food; ultrasonic extraction; UV spectrophotometric detection}, language = {cze}, issn = {0003-2670}, journal = {Analytica Chimica Acta}, title = {Liquid chromatographic-mass spectrometric determination of genistin and daidzin in soybean food samples after accelerated solvent extraction with modified content of extraction cell.}, volume = {517}, year = {2004} }
TY - JOUR ID - 571881 AU - KLEJDUS, Bořivoj - Mikelová, Radka - Adam, Vojtěch - ZEHNÁLEK, Josef - VACEK, Jan - Kizek, René - Kubáň, Vlastimil PY - 2004 TI - Liquid chromatographic-mass spectrometric determination of genistin and daidzin in soybean food samples after accelerated solvent extraction with modified content of extraction cell. JF - Analytica Chimica Acta VL - 517 IS - 1-2 SP - 1-11 EP - 1-11 SN - 00032670 KW - accelerated solvent extraction KW - daidzin KW - foodstuffs KW - genistin KW - high-performance liquid chromatography KW - isoflavones KW - mass spectrometry KW - solvent extraction KW - Soxhlet extraction KW - soybean food KW - ultrasonic extraction KW - UV spectrophotometric detection N2 - A newly elaborated accelerated solvent extraction (ASE) procedure allowed more accurate (<2%) and precise (<5-8% rel.) HPLC/UV/MS determination of isoflavones in different kinds of food made from soybean (products of ecological agriculture), i.e. soy farina, soy meat granulate, soy meat laminae, soy meat bits, Protmix and EKO-B1. The on-column limits of detection (LOD) for daidzin/genistin were 1.2/1.6 fmol for the signal-to-noise ratio S/N = 3 and 1-3 fmol for daidzem, genistein, formononetin, biochanin A and ononin, respectively. Final concentrations of daidzin in soybean foods fluctuated between 30 and 60 mug/g of dry matter (DM). Significantly higher concentrations of genistin (between 60 and 130 mug/g DM) were found in the soybean foods. ER -
KLEJDUS, Bořivoj, Radka MIKELOVÁ, Vojtěch ADAM, Josef ZEHNÁLEK, Jan VACEK, René KIZEK and Vlastimil KUBÁŇ. Liquid chromatographic-mass spectrometric determination of genistin and daidzin in soybean food samples after accelerated solvent extraction with modified content of extraction cell. \textit{Analytica Chimica Acta}. 2004, vol.~517, 1-2, p.~1-11. ISSN~0003-2670.
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