title: Sample preparation for the analysis of isoflavones from soybeans and soy foods.
abstract: This manuscript provides a review of the actual state and the most recent advances as well as current trends and future prospects in sample preparation and analysis for the quantification of isoflavones from soybeans and soy foods. Individual steps of the procedures used in sample preparation, including sample conservation, extraction techniques and methods, and post-extraction treatment procedures are discussed. The most commonly used methods for extraction of isoflavones with both conventional and "modern" techniques are examined in detail. These modern techniques include ultrasound-assisted extraction, pressurized liquid extraction, supercritical fluid extraction and microwave-assisted extraction. Other aspects such as stability during extraction and analysis by high performance liquid chromatography are also covered.
authors.affiliation: Centro para la Calidad de los Alimentos, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Campus Universitario "Duques de Soria", 42004 Soria, Spain. rostagno.mauricio@inia.es
authors.forename: M A
authors.initials: MA
authors.lastname: Rostagno
authors.forename: A
authors.initials: A
authors.lastname: Villares
authors.forename: E
authors.initials: E
authors.lastname: Guillamón
authors.forename: A
authors.initials: A
authors.lastname: García-Lafuente
authors.forename: J A
authors.initials: JA
authors.lastname: Martínez
mesh_terms: D053000:Analytic Sample Preparation Methods / Q000379:methods*; D007529:Isoflavones / Q000032:analysis*; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification*; D015203:Reproducibility of Results; D045730:Soy Foods / Q000032:analysis*; D013025:Glycine max / Q000737:chemistry*
chemical_list: D007529:Isoflavones; D010936:Plant Extracts