Proximate Analysis and Amino Acid Profile of the Ecuadorian Andean Lupin (Fabaceae: Lupinus mutabilis) Protein Isolate

Abstract

The purpose of the present study was to isolate the total protein content of lupin beans (Fabaceae: Lupinus mutabilis ). The macronutrient content was evaluated through a proximal analysis: total protein (67.25 %), carbohydrates (18.67 %), fat (5.95 %), ash (4.12 %), and moisture (4.01 %). The thin-layer chromatography analysis showed that seven essential amino acids are present in the protein isolate: glutamic acid, threonine, valine, isoleucine, leucine, methionine, tryptophan and also, the presence of glutamic acid and branched-chain amino acids.