Composition of the seeds of some Amaranthus species

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Abstract
The seeds of the five commonly consumed Amaranthus species have been analysed for their chemical composition and starch characteristics. A notably high fat, protein and ash content in the seeds of a sample of A. teunifolious as compared with other species has been demonstrated. All the samples analysed had a high oxalate and phytic acid content. The size of the starch granules from all the samples was in the range 08.2.3μm and the circular shape of granules from all the species was strikingly similar. Amaranthus polygamous and A. gracilis had low amylose starches (111.7 and 97.1 g kg−1, respectively), and A. spinosus and A. teunifolious had appreciable proportions of amylose (166.7 and 245.0 g kg−1, respectively).