Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/2376
Title: IRON BIOAVAILABILITY AND PROVITAMIN A FROM SWEET POTATO- AND CEREAL-BASED COMPLEMENTARY FOODS
Authors: Christides, Tatiana
Amagloh, F. K.
Coad, Jane
Keywords: Bioavailability
Caco-2 cell
Complementary food
β-carotene
Iron
Sweet potato
Polyphenols
Vitamin A
Issue Date: 2015
Publisher: MDPI
Abstract: Iron and vitamin A deficiencies in childhood are public health problems in the developing world. Introduction of cereal-based complementary foods, that are often poor sources of both vitamin A and bioavailable iron, increases the risk of deficiency in young children. Alternative foods with higher levels of vitamin A and bioavailable iron could help alleviate these micronutrient deficiencies. The objective of this study was to compare iron bioavailability of β-carotene-rich sweet potato-based complementary foods (orange-flesh based sweet potato (OFSP) ComFa and cream-flesh sweet potato based (CFSP) ComFa with a household cereal-based complementary food (Weanimix) and a commercial cereal (Cerelac®), using the in vitro digestion/Caco-2 cell model. Iron bioavailability relative to total iron, concentrations of iron-uptake inhibitors (fibre, phytates, and polyphenols), and enhancers (ascorbic acid, ß -carotene and fructose) was also evaluated. All foods contained similar amounts of iron, but bioavailability varied: Cerelac® had the highest, followed by OFSP ComFa and Weanimix, which had equivalent bioavailable iron; CFSP ComFa had the lowest bioavailability. The high iron bioavailability from Cerelac® was associated with the highest levels of ascorbic acid, and the lowest levels of inhibitors; polyphenols appeared to limit sweet potato-based food iron bioavailability. Taken together, the results do not support that CFSP- and OFSP ComFa are better sources of bioavailable iron compared with non-commercial/household cereal-based weaning foods; however, they may be a good source of provitamin A in the form of β-carotene
URI: http://hdl.handle.net/123456789/2376
ISSN: 23048158
Appears in Collections:Faculty of Agriculture, Food and Consumer Sciences



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.