title: Espresso beverages of pure origin coffee: mineral characterization, contribution for mineral intake and geographical discrimination.
abstract: Espresso coffee beverages prepared from pure origin roasted ground coffees from the major world growing regions (Brazil, Ethiopia, Colombia, India, Mexico, Honduras, Guatemala, Papua New Guinea, Kenya, Cuba, Timor, Mussulo and China) were characterized and compared in terms of their mineral content. Regular consumption of one cup of espresso contributes to a daily mineral intake varying from 0.002% (sodium; Central America) to 8.73% (potassium; Asia). The mineral profiles of the espresso beverages revealed significant inter- and intra-continental differences. South American pure origin coffees are on average richer in the analyzed elements except for calcium, while samples from Central America have generally lower mineral amounts (except for manganese). Manganese displayed significant differences (p<0.05) among the countries of each characterized continent. Intercontinental and inter-country discrimination between the major world coffee producers were achieved by applying canonical discriminant analysis. Manganese and calcium were found to be the best chemical descriptors for origin.
authors: REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Rua Dr. António Bernardino de Almeida 431, 4200-072 Porto, Portugal.
authors: Marta
authors: M
authors: Oliveira
authors: Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Departamento de Matemática, Rua Dr. António Bernardino de Almeida 431, 4200-072 Porto, Portugal.
authors: Sandra
authors: S
authors: Ramos
authors: REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Rua Dr. António Bernardino de Almeida 431, 4200-072 Porto, Portugal.
authors: Cristina
authors: C
authors: Delerue-Matos
authors: REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Rua Dr. António Bernardino de Almeida 431, 4200-072 Porto, Portugal. Electronic address: sbm@isep.ipp.pt.
authors: Simone
authors: S
authors: Morais
mesh_terms: D001208:Asia; D001938:Brazil; D002681:China; D040503:Coffea / Q000737:chemistry* / Q000145:classification; D003069:Coffee / Q000737:chemistry* / Q000145:classification; D003105:Colombia; D016002:Discriminant Analysis; D005002:Ethiopia; D007194:India; D007214:Indonesia; D007630:Kenya; D008800:Mexico; D008903:Minerals / Q000032:analysis*; D010219:Papua New Guinea; D012639:Seeds / Q000737:chemistry / Q000145:classification
chemical_list: D003069:Coffee; D008903:Minerals
keywords: Espresso coffee beverages; High-resolution continuum source atomic absorption spectrometry; Minerals; Pure origin coffees differentiation