title: Classification of green coffee beans by differences in protein composition obtained by matrix-assisted laser desorption/ionization mass spectrometry.
abstract: It is well known that proteins and peptides play an important role in the flavour of roasted coffee, but little is reported in the literature about their characterization. In view of the potential of matrix-assisted laser desorption/ionization mass spectrometry in the analysis of proteins in complex mixtures, two varieties of coffee green beans, Arabicas and Robustas, were analyzed by this technique, in order to obtain fingerprints of their native proteins. Differences were observed between Arabicas and Robustas green beans, and cluster analysis allows differentiation of samples of the same variety from different plantations.
authors.affiliation: Dipartimento di Economia e Merceologia, Università di Trieste, Via A. Valerio 6, Italy.
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Procida
authors.forename: Barbara
authors.initials: B
authors.lastname: Campisi
authors.forename: Roberta
authors.initials: R
authors.lastname: Seraglia
authors.forename: Pietro
authors.initials: P
authors.lastname: Traldi
mesh_terms: D000349:Africa; D001208:Asia; D003069:Coffee / Q000737:chemistry* / Q000145:classification*; D010802:Phylogeny; D010940:Plant Proteins / Q000032:analysis* / Q000737:chemistry; D012639:Seeds / Q000737:chemistry*; D013020:South America; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization / Q000379:methods*
chemical_list: D003069:Coffee; D010940:Plant Proteins