title: Evaluation of the bioaccessible fractions of Fe, Zn, Cu and Mn in baby foods.
abstract: The bioaccessibility of four essential micronutrients (iron, zinc, copper and manganese) in some baby foods was evaluated using an in vitro gastrointestinal digestion model. For all of the flour-based foods evaluated, the bioaccessibility of Zn was low, while the bioaccessibility of Cu was above 50%. For these samples, the bioaccessibility of Mn was lower than 50%. Two samples composed of oat and rice flour and whole wheat flour demonstrated a lower bioaccessible fraction of Fe (less than 35%), while the sample made with wheat flour showed high Fe bioaccessibility (approximately 80%). For vegetable- and meat-based baby foods, the Fe bioaccessibility was greater than 80% in samples that contained meat and chicken and approximately 20% for the banana-based sample. The bioaccessibility of Zn was small for all of the foods studied, and in some cases, no Zn appeared to be released. The sample containing banana showed 100% Cu bioaccessibility, in contrast to meat and chicken-based samples, whose Cu bioaccessibility values were less than 50%. The opposite effect occurred for Mn, in which samples containing meat and chicken presented a bioaccessible fraction greater than 50% while the banana-based sample had a fraction less than 50%.
authors.affiliation: Institute of Chemistry, University of Campinas, P.O. Box 6154, 13083-970 Campinas, SP, Brazil.
authors.forename: Emanueli
authors.initials: E
authors.lastname: do Nascimento da Silva
authors.forename: Ana Beatriz Perriello
authors.initials: AB
authors.lastname: Leme
authors.forename: Mirla
authors.initials: M
authors.lastname: Cidade
authors.forename: Solange
authors.initials: S
authors.lastname: Cadore
mesh_terms: D000818:Animals; D001646:Bile / Q000737:chemistry; D001682:Biological Availability; D003300:Copper / Q000032:analysis*; D004063:Digestion; D005433:Flour / Q000032:analysis; D005750:Gastric Juice / Q000737:chemistry; D006801:Humans; D007223:Infant; D007225:Infant Food / Q000032:analysis*; D007501:Iron / Q000032:analysis*; D008345:Manganese / Q000032:analysis*; D008460:Meat / Q000032:analysis; D018977:Micronutrients / Q000032:analysis*; D008954:Models, Biological; D012463:Saliva / Q000737:chemistry; D014675:Vegetables / Q000737:chemistry; D015032:Zinc / Q000032:analysis*
chemical_list: D018977:Micronutrients; D008345:Manganese; D003300:Copper; D007501:Iron; D015032:Zinc
keywords: Baby foods; Bioaccessibility; Inorganic constituents