title: Thermal and physicochemical properties and nutritional value of the protein fraction of Mexican chia seed (Salvia hispanica L.).
abstract: Thermal, functional and nutritional properties of the main protein fractions and a protein isolate of chia seed from the state of Jalisco, Mexico, were studied by differential scanning calorimetry, gelling, foaming, water-holding capacity (WHC) and oil-holding capacity, amino acid profile, chemical score and in vitro digestibility tests. The protein isolate showed good WHC (4.06 g/g) and excellent oil-retention capacities (4.04 g/g), making it attractive as an additive in bakery products and food emulsions. It also contained high amounts of glutamic acid (123 g/kg raw protein), arginine (80.6 g/kg raw protein) and aspartic acid (61.3 g/kg raw protein). However, its essential amino acid profile showed deficiencies with respect to the 1985 standard of the FAO/WHO/UNU for pre-school children. Therefore, its use as a sole protein source is not recommended; supplementation with a lysine-rich source would be necessary, as this was the limiting amino acid.
authors.affiliation: Facultad de Química, Departamento de Alimentos y Biotecnología Universidad Nacional Autónoma de México, México DF 04510, México.
authors.forename: B L
authors.initials: BL
authors.lastname: Olivos-Lugo
authors.forename: M Á
authors.initials: MÁ
authors.lastname: Valdivia-López
authors.forename: A
authors.initials: A
authors.lastname: Tecante
mesh_terms: D001120:Arginine / Q000032:analysis; D001224:Aspartic Acid / Q000032:analysis; D002152:Calorimetry, Differential Scanning; D055598:Chemical Phenomena; D003314:Corn Oil / Q000032:analysis / Q000737:chemistry; D004063:Digestion; D005527:Food, Fortified / Q000032:analysis*; D005782:Gels; D018698:Glutamic Acid / Q000032:analysis; D005983:Glutens / Q000737:chemistry; D008800:Mexico; D009753:Nutritive Value; D028321:Plant Preparations / Q000737:chemistry*; D010940:Plant Proteins / Q000737:chemistry*; D055550:Protein Stability; D027544:Salvia / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry*; D013696:Temperature; D014867:Water / Q000032:analysis
chemical_list: D005782:Gels; D028321:Plant Preparations; D010940:Plant Proteins; D014867:Water; D001224:Aspartic Acid; D018698:Glutamic Acid; D003314:Corn Oil; D005983:Glutens; D001120:Arginine