COMPOSITION, HOT-WATER SOLUBILITY OF ELEMENTS AND NUTRITIONAL VALUE OF FRUITS AND

  • Barbosa J
  • Zambon L
  • Motta A
  • et al.
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Abstract

ABSTRACT Yerba mate leaves are the most studied and used parts of the tree, while fruits have been little investigated as to their elemental composition. The objective of this study was to characterize the composition, the hot-water solubility of the elements and the nutritional value of yerba mate (Ilex paraguariensis St. Hill) fruits and leaves. Both fruits and leaves were collected from four yerba mate provenances (cities of Cascavel, Quedas do Iguaçu and Ivaí in Paraná state and Barão de Cotegipe in Rio Grande do Sul state) 17 years of age, grown in the city of Pinhais, Paraná state, Brazil. The total and hot water-soluble contents of 22 and 20 elements, respectively, were determined. The elemental composition of the fruits presented the following decreasing order: C, K, N, Mg, Ca, P, Al, Na, Zn, Mn, Fe, Ba, Cu, Ni, Mo, Pb, Cr, As, Co, Ag, V and Cd. For the leaves the decreasing order was: C, N, K, Ca, Mg, P, Al, Mn, Na, Fe, Zn, Ba, Cu, Ni, Pb, Cr, Mo, As, Co, Ag, V and Cd. It was found than 2 to 8 elements in the fruit presented greater water solubility than in the leaves. In case of consumption via infusion of the fruits or leaves, there would be nutritive value for K, Mg, P, Mn, Cr, Mo, Cu and Zn, while consumption of capsules would have nutritive value only for Mn via the leaves. In general, the fruits have more distinct elemental composition, hot-water solubility and nutritional value than yerba mate leaves.RESUMO As folhas erva-mate são as partes mais estudadas e mais utilizadas para o consumo, enquanto os frutos são pouco estudados quanto à composição elementar. Assim, neste estudo, objetivou-se caracterizar a composição, a hidrossolubilidade dos elementos e o valor nutricional de frutos e folhas de erva-mate (Ilex paraguariensis St. Hill). Foram coletados frutos e folhas de árvores de quatro procedências de erva-mate (Cascavel, Quedas do Iguaçu, Ivaí estado do Paraná e Barão de Cotegipe do estado do Rio Grande do Sul) com 17 anos, cultivadas na cidade de Pinhais, estado do Paraná, Brasil. Foram determinados os teores totais e hidrossolúveis em água quente de 22 e 20 elementos, respectivamente. A composição elementar dos frutos apresentou a seguinte ordem decrescente: C, K, N, Mg, Ca, P, Al, Na, Zn, Mn, Fe, Ba, Cu, Ni, Mo, Pb, Cr, As, Co, Ag, V e Cd. Já, para as folhas, a ordem decrescente foi: C, N, K, Ca, Mg, P, Al, Mn, Na, Fe, Zn, Ba, Cu, Ni, Pb, Cr, Mo, As, Co, Ag, V e Cd. Verificou-se que 2 de 8 elementos apresentaram maior hidrossolubilidade nos frutos que nas folhas. Caso a infusão dos frutos ou das folhas fosse consumida, teria valor nutritivo para K, Mg, P, Mn, Cr, Mo, Cu e Zn, enquanto o consumo de cápsulas contribuiria apenas para o Mn via folhas. Em geral, os frutos têm composição, solubilidade de elementos em água quente e valor nutricional diferente das folhas de erva-mate.

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APA

Barbosa, J. Z., Zambon, L. M., Motta, A. C. V., & Wendling, I. (2015). COMPOSITION, HOT-WATER SOLUBILITY OF ELEMENTS AND NUTRITIONAL VALUE OF FRUITS AND. Ciência e Agrotecnologia, 39(6), 593–603. https://doi.org/10.1590/s1413-70542015000600006

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