Maria Emília da Silva Menezes

Café e saúde humana: um enfoque nas substâncias presentes na bebida relacionadas às doenças cardiovasculares

Coffee is the most consumed beverage in the Western world, including Brazil. The fact that it is one the most popular beverages and its worldwide consumption and economic importance explain the interest for studies on coffee, from its composition to its effects on human health. In addition to the nutrients, its various components include caffeine, the diterpenes cafestol and kahweol, and chlorogenic acids, with coffee being an important dietary source of these compounds. Many studies have verified the association between its constituents and health, especially caffeine and high blood pressure, cafestol and kahweol and dyslipidemias, and chlorogenic acids and cardiovascular protection from their antioxidant properties. This article aims to succinctly present the importance and composition of the drink, the physiological mechanisms involved in the increased blood pressure and serum cholesterol attributed to coffee, and selected studies that verified the association between coffee consumption and these cardiovascular diseases.O cafe e a bebida mais consumida no Brasil e no mundo ocidental. O fato de ser uma bebida tao popular, aliado a sua importância economica, explica o interesse por estudos sobre o cafe, desde a sua composicao ate seus efeitos na saude humana. Dentre as diversas substâncias presentes na composicao quimica do cafe, alem dos nutrientes, destacam-se a cafeina, os diterpenos cafestol e kahweol e os acidos clorogenicos, o que faz do cafe uma importante fonte dietetica destes compostos. Muitos estudos tem verificado a influencia de seus constituintes na saude, principalmente a cafeina vs a elevacao da pressao arterial; o cafestol e o kahweol vs a dislipidemia; e acidos clorogenicos vs protecao cardiovascular, por suas propriedades antioxidantes. Este artigo tem como objetivo apresentar de forma sucinta a importância da bebida e sua composicao quimica, os mecanismos fisiologicos envolvidos na elevacao da pressao arterial e do colesterol serico atribuiveis ao cafe, bem como estudos selecionados que verificaram a associacao do consumo da bebida com estas doencas cardiovasculares.

Reflexos da utilização de farelo de coco sobre o valor nutricional do filé de tilápia-do-nilo (Oreochromis niloticus Linnaeus, 1857)

The use of coconut meal may represent an alternative source to fish feeding. The purpose of this work was to assess the impact of the use of coconut meal in Nile tilapia feeding and on the nutritional value of the fish fillets. The experiment was conducted in a completely randomized design with 4 treatments (T1 - 0%, T2 - 10%, T3 - 20%, and T4 - 30% for the inclusion of coconut meal) with five repetitions. The proximate composition, cholesterol, and fatty acids were determined. There was a difference (p < 0.05) between the treatments T1 and T3 and between T2 and T3 with regard to moisture levels; between T2 and T3 with regard to lipids; T1 and all the other treatments with regard to carbohydrates, and finally between T1 and T2 and between T3 and T4 with regard to ash. The cholesterol level showed a significant gradual increase following the increase in the inclusion of coconut meal. There was also a difference (p < 0.05) between the treatments concerning the following fatty acids: C10:0; C12:0; C14:0; C18:1; C18:3 (gama); C20:3 , and C22:6 , but the nutritional quality of the product was not affected.

Consumo de café segundo métodos de preparo da bebida e associação com perfil lipídico sérico em hipertensos e diabéticos

1 Artigo elaborado a partir da dissertacao de F.A. LIMA, intitulada “Consumo de cafe segundo metodos de preparo e associacao com perfil lipidico serico em hipertensos e diabeticos de Flexeiras AL”. Universidade Federal de Alagoas; 2008. Apoio: DELIT-MS/CNPq/FAPEAL/SESAU-AL (PPSUS) e Fundacao de Pesquisa do Estado de Alagoas (Processo no 2005-0230427-7). 2 Universidade Federal de Alagoas, Faculdade de Nutricao, Programa de Pos-Graduacao em Nutricao. Maceio, AL, Brasil. 3 Universidade Federal de Alagoas, Faculdade de Nutricao, Laboratorio de Nutricao em Cardiologia. Campus A. C. Simoes, BR 104 Norte, km 97, Tabuleiro dos Martins, 57072-970, Maceio, AL, Brasil. Correspondencia para/Correspondence to: S.M.L. VASCONCELOS. E-mail: . 4 Universidade Federal de Alagoas, Programa de Pos-Graduacao em Quimica e Biotecnologia, Instituto de Quimica e Biotecnologia. Maceio, AL, Brasil. Consumo de cafe segundo metodos de preparo da bebida e associacao com perfil lipidico serico em hipertensos e diabeticos1