Keywords
caffeine
type of filter
How to Cite
Abstract
Caffeine is an alkaloid compound belonging to the class of methylxanthines. It is the mostly worldwide consumed psychoactive substance. It can be found in several kinds of food including in coffee beverage. Due to the highly consumption of coffee drink by the Brazilian population, and on account of the fact of the caffeine has been associated with both positive and negative aspects to the health, determining the contents of this alkaloid in coffee beverage is relevant. In the present study the effect of the filter type on the caffeine contents contained in coffee beverage was evaluated. After filtering the coffee beverages through five different types of filter, the respective filtrates were analyzed by high performance liquid chromatography (HPLC). The rates of caffeine ranged from 58.01 ± 0.59 to 80.38 ± 1.25mg/100mL, depending on the each analyzed types of filter. The caffeine-retention capacity presented by the filter was correlated with the type of material used for manufacturing of the filter, which was in the following order: flannel tissue > ecological paper = cotton tissue > normal regular paper > nylon tissue. Hence, choice of the type of the filter used for filtrating coffee drink showed to be very important, considering that even drinking the same quantity of coffee beverage it seems likely consuming different amounts of caffeine, depending on the filter type the coffee drink was filtrated through.References
1. Minatti E. Cafeína: a droga predileta. Rev Eletr Depart Quím 2007 maio [citado 2002]; 22(1). Disponível em: http://www.qmc.ufsc.br/qmcweb/exemplar22.html
2. Tfouni SAV, Camargo MCR, Vitorino SHP, Menegário TF, Toledo MCF. Contribuição do guaraná em pó (Paullinia cupana) como fonte de cafeína na dieta. Rev Nutr 2007; 20(1): 63-8.
3. Camargo MCR, Toledo MCF. Teor de cafeína em cafés brasileiros. Ciênc Tecnol Aliment 1998; 18(4): 421-4.
4. De Maria CAB, Moreira RFA. Cafeína: revisão sobre métodos de análise. Quím Nova 2007; 30(1): 586-92.
5. Clausson B, Granath F, Ekbom A, Lundgren S, Nordmark A, Signorello LB, Cnattingius S. Effect of caffeine exposure during pregnancy on birth weight and gestational age. Am J Epidemiol 2002; 155(5): 429-36.
6. James JE. Critical review of dietary caffeine and blood pressure: a relationship that should be taken more seriously. Psychosom Med 2004; 66(1): 63-71.
7. Smith A. Effects of caffeine on human behavior. Food Chem Toxicol 2002; 40(9): 1243-55.
8. Fredholm BB, Bättig K, Holmén J, Nehlig A, Zvartau EE. Actions of caffeine in the brain with special reference to factors that contribute to its widespread use. Rev Pharmacol 2005; 51(1): 83-133.
9. Alves AB, Bragagnolo N. Determinação simultânea de teobromina, teofi lina e cafeína em chás por cromatografi a líquida de alta efi ciência. Rev Bras Ciênc Farmaceut 2002; 38(2): 237-43.
10. Horwitz, W. Evaluation on analytical methods used for regulation of foods and drugs. Analytical Chemistry 1982; 54(1): 67-76.
11. S.A.S. Institute. User’s guide: statistics [computer program - CD-ROM]. Version 6.1.2. Cary (USA): North Carolina State University; 1996.
12. Camargo MCR, Toledo MCF. Chá mate e café como fontes de hidrocarbonetos policíclicos aromáticos (HPAs) na dieta da população de Campinas. Ciênc Tecnol Aliment 2002; 22(1): 49-53.
13. Alves ST, Dias RCE, Benassi MT. Metodologia para análise simultânea de acido nicotínico, trigonelina, acido clorogênico e cafeína em café torrado por cromatografi a líquida de alta efi ciência. Quim Nova 2006; 29(6): 1164-8.
14. Aquino FWB, Amorim AGN, Prata LF, Nascimento RF. Determinação de aditivos, aldeídos furânicos, açúcares e cafeína em bebidas por cromatografi a líquida de alta efi ciência: validação de metodologias. Ciênc Tecnol Aliment 2004; 24(1): 32-8.
15. Nogueira M, Trugo LC. Distribuição de isômeros de ácido clorogênico e teores de cafeína e trigonelina em cafés solúveis brasileiros. Ciênc Tecnol Aliment 2003; 23(2): 296-9.
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