title: Caffeine daily intake from dietary sources in Brazil.
abstract: A survey on the potential intake of caffeine was carried out in Campinas, SP, Brazil, in the summer of 1993. The survey was based on a representative sample of 600 individuals, 9-80 years old, who were asked about their habitual usage of coffee, tea, chocolate products and carbonated beverages. Caffeine levels in the products were determined by high performance liquid chromatography with a UV-visible detector at 254 nm. Individual daily intakes (mg/kg b.w.) of caffeine were calculated from the consumption data generated by the survey and the caffeine content of the analysed products. Of all those interviewed, 81% consumed soft drinks regularly, 75% coffee, 65% chocolate products and 37% tea. Of the analysed products, coffee showed the highest amount of caffeine. The average and median potential daily intake of caffeine by the studied population were, respectively, 2.74 and 1.85 mg/kg b.w. Coffee, tea, chocolate products and carbonated beverages accounted for median individual daily intakes of 1.90, 0.32, 0.19, and 0.19 mg/kg b.w., respectively. These data show that coffee is the most important vehicle for caffeine intake within the studied population.
authors.affiliation: Faculdade de Engenharia de Alimentos, Departamento de Ciência de Alimentos, Universidade Estadual de Campinas-UNICAMP, SP, Brazil.
authors.forename: M C
authors.initials: MC
authors.lastname: Camargo
authors.forename: M C
authors.initials: MC
authors.lastname: Toledo
authors.forename: H G
authors.initials: HG
authors.lastname: Farah
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000368:Aged; D000369:Aged, 80 and over; D001628:Beverages / Q000032:analysis; D001938:Brazil; D002099:Cacao / Q000737:chemistry; D002110:Caffeine / Q000008:administration & dosage*; D000697:Central Nervous System Stimulants / Q000008:administration & dosage*; D002648:Child; D003069:Coffee / Q000737:chemistry; D004034:Diet Surveys; D005247:Feeding Behavior; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013662:Tea / Q000737:chemistry
chemical_list: D000697:Central Nervous System Stimulants; D003069:Coffee; D013662:Tea; D002110:Caffeine