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Chemical composition of flours made of residues from the king palm (Archontophoenix alexandrae) industry

By Manoela Alano Vieira, Rossana Podestá, Karina Cardoso Tramonte, Renata Dias de Mello Castanho Amboni, Karina Nunes de Simas, Sandra Regina Paulon Avancini and Edna Regina Amante

Abstract

Residues from King palm (Archontophoenix alexandrae) processing were used for the production of flours, which were then chemically characterized. The protein content in these flours ranged from 3.62 to 9.75 g/100g and was higher in sifted leaf flour (SLF). The dietary fiber contents varied from 64 to 72 g/100g. These values were high when compared to those of flours used in human nutrition. Analysis of anti-nutritional factors showed phytate contents to be below the levels that affected the bioavailability of minerals in human diet. Tannin contents were compatible with those found in legumes, between 0 and 2000 mg/100g. These flours showed high mineral content, which suggested a possibility for them to be used as food supplement. However, the bioavailability of these minerals could be affected by high total dietary fibre concentrations and anti-nutritional components contained in the samples.<br>Resíduos do processamento de palmeira-real (Archontophoenix alexandrae) foram utilizados para produção de farinha e caracterizados quimicamente. O conteúdo de proteína encontrado nas farinhas variam de 3,62 a 9,75, sendo maior na farinha da folha peneirada. Os teores de fibra dietética total variaram de 64.00 a 72 g/100g, valores altos quando comparados com farinhas tradicionalmente utilizadas na alimentação humana. A análise de fatores antinutricionais indicou teores de fitato abaixo dos níveis que afetam a biodisponibilidade de minerais na dieta. Os teores de tanino foram significativos, compatíveis aos encontrados nas leguminosas entre 0 e 2000 mg/100g. As farinhas de palmeirareal apresentaram elevados teores de minerais, podendo ser indicadas como suplementos em alimentos, porém, deve-se considerar que a biodisponibilidade destes minerais pode ser afetada pela alta concentração de fibras dietéticas totais e de outros componentes antinutricionais contidos na amostra

Topics: Archontophoenix alexandrae, residues, flour, chemical analysis, Biotechnology, TP248.13-248.65, Chemical technology, TP1-1185, Technology, T, DOAJ:Biotechnology, DOAJ:Life Sciences, DOAJ:Biology and Life Sciences
Publisher: Instituto de Tecnologia do Paraná (Tecpar)
Year: 2009
DOI identifier: 10.1590/S1516-89132009000400021
OAI identifier: oai:doaj.org/article:2df39d4861064938ac74d30cc50aacd2
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