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.

Caffeine content of conventional and non conventional foods on the Hungarian market

“…Caffeine content data of different food items investigated in the present study are comparable to those published by other authors (SHIVELY & TARKA, 1984;CAMARGO et al, 1999, CAUDLE et al, 2001MCCUSKER et al, 2003MCCUSKER et al, , 2006a2006b;PENA et al, 2005;CHOU & BELL, 2007;OLMOS et al, 2009;HECKMAN et al, 2010). These data show that there are some special caffeine sources like cakes, biscuits or cottage cheese based desserts containing cocoa or chocolate, but it is supposed that these foods do not contribute at a high level in the intake of caffeine.…”

Chá-mate e café como fontes de hidrocarbonetos policíclicos aromáticos (HPAs) na dieta da população de Campinas

“…A participação do chá-mate e do café na dieta da população de Campinas, SP, foi obtida a partir de uma pesquisa feita em 1993, onde 600 indivíduos, com idade entre 9 e 80 anos, foram questionados sobre seus hábitos alimentares em relação aos respectivos produtos [4]. A partir de dados obtidos pelo método da freqüência de alimentos, foram estimados os consumos médio e máximo de café e chá-mate, conforme apresentado na Tabela 1.…”

“…TABELA 1. Estimativa de consumo diário de chá-mate e café pela população de Campinas, SP ¹ Fonte: CAMARGO, TOLEDO, FARAH [4]. ² n=600 indivíduos.…”

“…Cabe ainda ressaltar que o chá-mate (especialmente a granel) apresenta baixo teor de cafeína e que, diferentemente do que se observou com o café, não houve aumento da extração deste alcalóide após fervura prolongada ou após um maior tempo de infusão da erva [4].…”

“…De acordo com a pesquisa realizada por CAMARGO, TOLEDO, FARAH [4], 75% dos indivíduos entrevistados consumiam diariamente cerca de 5 "cafezinhos", equivalentes à quantidade média diária de 284,50mL. Foram ainda identificados consumidores extremos, cujo consumo diário chegava a 2 litros de café.…”