title: Sweetpotato- and cereal-based infant foods: protein quality assessment, and effect on body composition using sprague dawley rats as a model.
abstract: The Protein Digestibility Corrected Amino Acid Score (PDCAAS) of sweetpotato-based complementary foods (OFSP ComFa and CFSP ComFa) and cereal-based infant products (Weanimix and Cerelac) was assessed using 3 wk-old male Sprague Dawley rats weighing between 53-67 g as a model for human infants. Also, the effect of consumption of the infant formulations on lean mass, bone mass content and fat mass was evaluated by Dual-Energy X-ray Absorptiometry (DEXA) using 6 wk-old Sprague Dawley rats (initial weight, 206-229 g). The ComFa products and Weanimix are household-level formulations, and Cerelac is a commercial infant cereal. The true protein digestibility score for Cerelac was 96.27%, and about 1.8% (P<0.0001) higher than that for OFSP ComFa, CFSP ComFa and Weanimix. However, OFSP ComFa had the highest un-truncated PDCAAS by a difference of 4.1%, than CFSP ComFa, and about 20% difference compared with both the Weanimix and Cerelac. All the products investigated had PDCAAS greater than 70%, the minimum protein quality requirement for complementary foods. Among the rats assigned to the four formulations, their bone mass and fat mass composition were not significantly different (P=0.08 and P=0.85, respectively). However, the rats on CFSP ComFa had higher lean mass than those on Cerelac (321.67 vs. 297.19 g; P=0.03). The findings from the PDCAAS and the DEXA-measured body composition studies indicate that complementary foods could be formulated from readily available agricultural resources at the household-level to support growth as would a nutritionally adequate industrial-manufactured infant cereal. Nonetheless, it should be noted that the findings of our studies are based on an animal model.
authors.affiliation: Food Processing and Technology Unit, Department of Biotechnology, Faculty of Agriculture, University for Development Studies, Nyankpala, Ghana.
authors.forename: Francis Kweku
authors.initials: FK
authors.lastname: Amagloh
authors.affiliation: Institute of Food, Nutrition and Human Health, College of Health, Te Kura Hauora Tangata, Massey University, Palmerston North, New Zealand.
authors.forename: Tracy
authors.initials: T
authors.lastname: Chiridza
authors.affiliation: Institut Polytechnique LaSalle Beauvais, Beauvais, Cedex, France.
authors.forename: Marie-Eve
authors.initials: ME
authors.lastname: Lemercier
authors.affiliation: Institute of Food, Nutrition and Human Health, College of Health, Te Kura Hauora Tangata, Massey University, Palmerston North, New Zealand.
authors.forename: Anne
authors.initials: A
authors.lastname: Broomfield
authors.affiliation: Institute of Veterinary, Animal and Biomedical Sciences, College of Sciences, Massey University, Palmerston North, New Zealand.
authors.forename: Patrick C H
authors.initials: PC
authors.lastname: Morel
authors.affiliation: Institute of Food, Nutrition and Human Health, College of Health, Te Kura Hauora Tangata, Massey University, Palmerston North, New Zealand.
authors.forename: Jane
authors.initials: J
authors.lastname: Coad
mesh_terms: D000596:Amino Acids / Q000737:chemistry; D000818:Animals; D001823:Body Composition; D001835:Body Weight; D004044:Dietary Proteins; D002523:Edible Grain / Q000737:chemistry*; D063427:Food Quality; D007225:Infant Food; D027723:Ipomoea batatas / Q000737:chemistry*; D008297:Male; D009753:Nutritive Value; D051381:Rats
chemical_list: D000596:Amino Acids; D004044:Dietary Proteins
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