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Chemical composition, dietary fibre, tannins and minerals of grain amaranth genotypes

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Pages 750-754 | Received 09 Feb 2011, Accepted 24 Mar 2011, Published online: 20 May 2011
 

Abstract

The objective of this study was to determine the chemical composition of 28 white and coloured grain amaranth (Amaranthus spp.) genotypes. Neutral detergent fibre (NDF) concentration was greater while strach concentration was lower for coloured seeds genotypes than white seeds genotypes. Total dietary fibre followed a similar trend to that observed for NDF. Total tannin concentrations ranged between 20.7 and 0 g/kg with total and hydrolysed tannin concentrations being higher for white than for coloured seeds genotypes. Coloured seeds genotypes contained higher Mg and Ca concentrations than white seeds genotypes. However, seed colour had no influence on K, Na and P concentrations. Copper and Fe were the most variable micro-minerals in the evaluated genotypes with no significant effect of seed colour on the concentration of either mineral.

Declaration of interest: The authors have no conflict of interest and are responsible for the content of the manuscript.

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