Contributions to the botany and nutritional value of some wild Amaranthus species (Amaranthaceae) of Nuevo Leon, Mexico

摘要: Seeds and plants of Amaranthus have been a source food for many cultures in the world. Some species can be found as weeds or growing wild under severe climatic soil conditions, but their potential sources has not studied. The objective this work was to study nutritional quality four ofAmaranthus,A. retroflexus (AR),A. viridis (A V),A. palmeri (AP) andA. blitoides (AB) vegetable greens. Histochemical studies showed higher levels starch leaves AR AB, moderate amounts tannins all leaves, high protein concentration stems alkaloids tissues AV AB. Antinutritional factors (nitrates, oxalates, cyanogenic glycosides, phytates) were quantified at preflowering stage, only nitrates (0.34-2% dw) above those generally considered safe, similar spinach. No glycosides detected any species. Bromatologic analysis whole different plant parts maturity (mature seeds) that mature individual sections recommended animal feed since they contain (20.6-24.7% plant, 25.3-32.9% leaves) soluble carbohydrate (>40%).Amaranthus could best consumed vegetables stage. At highest concentrations (22.8-27.8%), while remaining chemical composition very other vegetables. compositions, had no detrimental chemicals which would deter use foods. Organoleptic taste preference indicate stage should harvested human consumption.