title: Simultaneous quantitation of free and conjugated phytoestrogens in Leguminosae by liquid chromatography-tandem mass spectrometry.
abstract: Phytoestrogens are diphenolic compounds that are present in several edible plants and are particularly abundant in soybeans. Because of their estrogenical, antriestrogenical, anticarcinogenic and antioxidant activities in animal and humans, they became of great interest. Dietary factors are considered important in determination of risks, in fact, studies have revealed beneficial or protective effects of the consumption of vegetables, in particular soy and soybean products. So that in the present paper the simultaneous determination of eight isoflavones and coumestrol in vegetables is reported. The quantitative analysis has been made by means of LC separation combined with tandem mass spectrometry. In particular, a new simple and fast extraction methodology and a clean-up, based on cold aided de-fatting, is proposed. Method performance was evaluated by comparison with a reference procedure. The developed procedure was then used for a survey of phytoestrogens concentration in some selected vegetables.
authors.affiliation: Dipartimento di Chimica, Università "La Sapienza", Piazzale Aldo Moro 5, 00185 Roma, Italy.
authors.forename: Marta Letizia
authors.initials: ML
authors.lastname: Antonelli
authors.forename: Angelo
authors.initials: A
authors.lastname: Faberi
authors.forename: Elisabetta
authors.initials: E
authors.lastname: Pastorini
authors.forename: Roberto
authors.initials: R
authors.lastname: Samperi
authors.forename: Aldo
authors.initials: A
authors.lastname: Laganà