Protein content and amino acids profile of pseudocereals

•Pseudocereals as gluten free products constitutes higher sources of protein than rice.•UPLC was employed to determine amino acids profile and contents of pseudocereals.•Seventeen essential and non-essential amino acids were quantified in all samples.•Leucine and phenylalanine were the most abundant amino acids in pseudocereals.•Lysine in pseudocereals is not a limiting amino acid, contrarily to cereals.