Characterization of amaranth (Amaranthus hypochondriacus L.) seed proteins

Amaranth seed has a high nutritional value due to the balanced amino acid composition of its proteins. These were isolated by sequential extractions. The percentage concentrations of albumins, globulins, prolamins, and glutelins were 51.0, 15.9, 2.0, and 31.1, respectively, of total protein extracted, the insoluble fraction being quantitatively negligible. Albumins are the richest in sulfur amino acids (4.4%), globulins in lysine (7.0%), and prolamins in leucine (10%) and threonine (7.2%). Glutelins poorest in lysine (4.2%)