MICROELEMENT AND AMINO ACID PROFILES OF CEREAL-BEAN-SARDINE COMPOSITE SUPPLEMENTARY FOODS FOR PRESCHOOL-AGE CHILDREN IN TANZANIA

摘要

This study was conducted to determine the amino acid and macro- andnmicro- element profiles of extruded composite foods intended for supplementarynfeeding of pre-school age children in Tanzania. Six compositenfoods, namely corn-bean-sardine meal, bean meal, sorghum-bean-sardinenmeal, rice-bean-sardine meal, corn-bean-sardine-cassava-soybean meal andnsorghum-bean-sardine-cassava-soybean meal, were formulated according tonthe FAO/WHO/UNU guidelines. The foods were evaluated for amino acidncontent, limiting amino acids and micro- and macro-element concentrationsnusing standard assays. Results showed that the concentrations of the essentialnamino acids (g/kg crude protein) were His (20–28), Thr (24–35), Val (43–53),nIle (35–46), Leu (78–91), Trp (11–15), Lys (42–57), SAA (17–40) and AAAn(62–77). Amino acid score ranged between 68–91%, with Thr, SAA and Lysnbeing the most limiting amino acids. Protein energy and net dietary proteinnenergy values ranged between 12.24–21.00 and 7.2–9.6%, respectively. Thenaverage micro-element concentrations in the composite products (mg/100 g)nvaried (P u0002 0.05) in the following ranges: Fe (7.5–10.4), Mn (1.2–3.6), Bn(0.33–0.83), Cu (0.38–1.1), Mo (trace–0.18), Co (trace), Ni (trace–0.14), Znn(3.9–5.6), Cd (trace) and Al (0.7–3.90). For the macro-elements, the concentrationsn(mg/100 g) were: Ca (250–570), Mg (90–148), Na (135–510), Kn(750–1260), P (360–510), and S (154–189). This study showed that thenextruded composite foods had high quality protein and were rich sources ofn3 Corresponding author. TEL: +255-715-844-024; FAX: +255-260-234649; EMAIL: tcemosha@nyahoo.comnJournal of Food Processing and Preservation 35 (2011) 1–19.nDOI: 10.1111/j.1745-4549.2009.00443.x 1n© 2010 Wiley Periodicals, Inc.nboth micro- and macro-elements. Development and consumption of such nutritiousncomposite foods would help to ameliorate the problem of protein andnmicro-element under-nutrition among pre-school age children in Tanzania.