Journal
FOOD CHEMISTRY
Volume 159, Issue -, Pages 5-11Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2014.02.168
Keywords
Infant formula; Thickeners; In vitro digestion; Calcium; Mineral availability; Viscosity; Phytate content
Funding
- Seneca Foundation and Science and Technology Agency (Murcia Region, Spain) [11978/PI/09]
- University of Murcia
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The effect of adding different thickening agents (locust bean gum (LBG), modified corn and rice starches (MCS, MRS)) to an infant formula on both in vitro mineral availability (Ca, Fe and Zn), quantified by atomic absorption spectrophotometry (AAS), and formula viscosity, after in vitro gastrointestinal digestion, was investigated. LBG was the most effective agent to increase formula thickness. However, it showed a negative effect on Ca, Fe and Zn in vitro solubility and dialysability. MCS and MRS only affected calcium solubility and dialysability when they were used at >= 50% of the maximum legal limit. No negative effect was observed for Fe and Zn when modified starches were added at the different concentrations assessed. The phytate content in the thickening ingredients was also analysed. Despite finding a considerable amount of phytic acid in the raw ingredients, its final concentration in the infant formula was insufficient to decrease in vitro mineral availability. (C) 2014 Elsevier Ltd. All rights reserved.
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