title: Composition of quince (Cydonia oblonga Miller) seeds: phenolics, organic acids and free amino acids.
abstract: Phenolic compounds, organic acids and free amino acids of quince seeds were determined by HPLC/DAD, HPLC/UV and GC/FID, respectively. Quince seeds presented a phenolic profile composed of 3-O-caffeoylquinic, 4-O-caffeoylquinic, 5-O-caffeoylquinic and 3,5-dicaffeoylquinic acids, lucenin-2, vicenin-2, stellarin-2, isoschaftoside, schaftoside, 6-C-pentosyl-8-C-glucosyl chrysoeriol and 6-C-glucosyl-8-C-pentosyl chrysoeriol. Six identified organic acids constituted the organic acid profile of quince seeds: citric, ascorbic, malic, quinic, shikimic and fumaric acids. The free amino acid profile was composed of 21 identified free amino acids and the three most abundant were glutamic and aspartic acids and asparagine.
authors.affiliation: Servico de Farmacognosia, Faculdade de Farmácia, Universidade do Porto, R. Aníbal Cunha, 4050-047 Porto, Portugal.
authors.forename: Branca M
authors.initials: BM
authors.lastname: Silva
authors.forename: Paula B
authors.initials: PB
authors.lastname: Andrade
authors.forename: Federico
authors.initials: F
authors.lastname: Ferreres
authors.forename: Rosa M
authors.initials: RM
authors.lastname: Seabra
authors.forename: M Beatriz P P
authors.initials: MB
authors.lastname: Oliveira
authors.forename: Margarida A
authors.initials: MA
authors.lastname: Ferreira
mesh_terms: D000143:Acids / Q000737:chemistry / Q000302:isolation & purification; D000596:Amino Acids / Q000737:chemistry* / Q000302:isolation & purification; D002849:Chromatography, Gas; D002851:Chromatography, High Pressure Liquid; D010636:Phenols / Q000737:chemistry* / Q000302:isolation & purification*; D027824:Rosaceae / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry
chemical_list: D000143:Acids; D000596:Amino Acids; D010636:Phenols