title: Amino acid profiles and digestible indispensable amino acid scores of proteins from the prioritized key foods in Bangladesh.
abstract: Concentrations of standard amino acids were determined in the composite samples (representing 30 agro-ecological zones of Bangladesh) of six prioritized key dietary protein sources: Oryza sativa (rice), Triticum aestivum (wheat flour), Lens culinaris (lentils), Pangusius pangusius (pangas), Labeo rohita (rohu) and Oreochromis mossambicus (tilapia). Digestible indispensable amino acid scores (DIAAS) was calculated using published data on amino acids' digestibility to evaluate the protein quality of these foods. Indispensable amino acid (IAA) contents (mg IAA/g protein), found to be highest in pangas (430) and lowest in wheat (336), of all these analyzed foods exceeded the FAO recommended daily allowance (277mg IAA/g protein) and contributed on average 40% to total amino acid contents. Untruncated DIAAS values ranged from 51% (lysine) in wheat to 106% (histidine) in pangas and distinguished pangas, rohu, and tilapia containing 'excellent quality' protein (DIAAS>100%) with potential to complement lower quality protein of cereals, fruits, and vegetables.
authors.affiliation: Institute of Nutrition and Food Science, University of Dhaka, Dhaka 1000, Bangladesh. Electronic address: nazmashaheeninfs@gmail.com.
authors.forename: Nazma
authors.initials: N
authors.lastname: Shaheen
authors.affiliation: Institute of Nutrition and Food Science, University of Dhaka, Dhaka 1000, Bangladesh. Electronic address: saiful_009.du@yahoo.com.
authors.forename: Saiful
authors.initials: S
authors.lastname: Islam
authors.affiliation: Institute of Nutrition and Food Science, University of Dhaka, Dhaka 1000, Bangladesh. Electronic address: sarahmunmun3@gmail.com.
authors.forename: Sarah
authors.initials: S
authors.lastname: Munmun
authors.affiliation: Institute of Nutrition and Food Science, University of Dhaka, Dhaka 1000, Bangladesh. Electronic address: m.zaman58@yahoo.com.
authors.forename: Md
authors.initials: M
authors.lastname: Mohiduzzaman
authors.affiliation: National Institute of Nutrition, Hyderabad, India. Electronic address: tlongvah@gmail.com.
authors.forename: Thingnganing
authors.initials: T
authors.lastname: Longvah
mesh_terms: D000596:Amino Acids / Q000032:analysis* / Q000737:chemistry*; D000818:Animals; D001459:Bangladesh; D004044:Dietary Proteins / Q000032:analysis*; D004063:Digestion; D002523:Edible Grain / Q000737:chemistry; D005399:Fishes / Q000378:metabolism; D005433:Flour / Q000032:analysis*; D005504:Food Analysis; D006639:Histidine / Q000032:analysis; D008239:Lysine / Q000032:analysis; D012275:Oryza / Q000737:chemistry; D014908:Triticum / Q000737:chemistry
chemical_list: D000596:Amino Acids; D004044:Dietary Proteins; D006639:Histidine; D008239:Lysine
keywords: Amino acids requirement; DIAAS; Indispensable amino acids; Nutrition; Protein quality