2007
DOI: 10.1590/s1415-52732007000100007
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Contribuição do guaraná em pó (Paullinia cupana) como fonte de cafeína na dieta

Abstract: OBJETIVO: Este estudo teve como objetivo determinar os teores de cafeína em diferentes marcas de guaraná em pó disponíveis comercialmente. MÉTODOS: A metodologia analítica utilizada envolveu as etapas de extração com água, limpeza da amostra com acetato de chumbo e determinação por cromatografia líquida de alta eficiência com detector de arranjo de diodos (200-400nm). Foram analisadas 39 amostras adquiridas nas cidades de Campinas e Ribeirão Preto, SP, entre dezembro de 2003 e janeiro de 2004. RESULTADOS: Os t… Show more

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Cited by 26 publications
(29 citation statements)
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References 13 publications
(9 reference statements)
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“…By comparison with published studies, it was possible to observe that the fourth "chimarrao" extract prepared with coarse-ground mate herb had large amounts of caffeine, similar to those in 10 mL of espresso coffee (28), 118 mL of cola type soft drink (29), 34 mL of energy drink (29), or 0.5 g of guarana powder (30). The amount of theobromine in this extract is equivalent to 6.2 g of milk chocolate (31).…”
Section: Resultsmentioning
confidence: 83%
“…By comparison with published studies, it was possible to observe that the fourth "chimarrao" extract prepared with coarse-ground mate herb had large amounts of caffeine, similar to those in 10 mL of espresso coffee (28), 118 mL of cola type soft drink (29), 34 mL of energy drink (29), or 0.5 g of guarana powder (30). The amount of theobromine in this extract is equivalent to 6.2 g of milk chocolate (31).…”
Section: Resultsmentioning
confidence: 83%
“…Its chemical composition is rich in compounds derived from xantin like teofilin, teobromin, and caffeine, and it has been considered the most potent source of metilxantins stimulating the central nervous system (CNS) (ARAÚJO et al, 2006;TFOUNI et al, 2007).…”
mentioning
confidence: 99%
“…A produção mundial do guaraná está concentrada quase que totalmente no Brasil, sendo que Peru e Venezuela são pequenos produtores. A safra de 2012 foi de 4.028 toneladas, cultivadas numa área de 13.898 hectares (Tfouni et al, 2007;Homma, 2011;CONAB, 2013).…”
Section: Plantas E Animais Coletados Tendem a Ser Substituídos (I) Pounclassified