Advanced search
Start date
Betweenand

Development of a multiplex FTIR microfluidic device for in vitro tests on bio-availability of calcium

Grant number: 18/11657-4
Support type:Scholarships in Brazil - Doctorate (Direct)
Effective date (Start): July 01, 2018
Effective date (End): June 30, 2021
Field of knowledge:Physical Sciences and Mathematics - Chemistry
Cooperation agreement: Innovation Fund Denmark
Principal Investigator:Daniel Rodrigues Cardoso
Grantee:Jéssica Freire Feitor
Home Institution: Instituto de Química de São Carlos (IQSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
Associated research grant:17/01189-0 - Novel aging: technologies and solutions to manufacture novel dairy products for healthy aging, AP.TEM

Abstract

The present proposal is part of the Novel Aging thematic grant (Technologies and solutions to manufacture novel dairy products for healthy aging/FAPESP 2017/01189-0). Osteoporosis, as caused by calcium malabsorption even for individuals with a good dietary calcium intake, affects 75 million people worldwide and is especially a problem for the elderly. Calcium balance in elderly subjects involves factors such as absorption of calcium ions in the intestines, incorporation to the bones, urinary and fecal excretion. Calcium malabsorption is related to the low solubility of most food calcium salts under neutral and alkaline conditions and has been correlated both with age-related insufficient acid production in the stomach and more importantly with insufficient capacity of soluble food derived calcium carriers in the intestines. The knowledge of the bioavailability of calcium ions by combining it with milk derived peptides and hydroxycarboxylates is of nutritional relevance. Thus, the main goal is to develop a microfluidic device coupled to multiplex FT-IR image spectrophotometer capable of simulating intestinal absorption of micronutrient like calcium ions for bioavailability studies. Further, the developed microfluidic device will be used to investigate the bioavailability of calcium ions upon binding to milk derived peptides and hydroxycarboxylates aiming to tailor novel ingredients for improving calcium bioavailability in food. (AU)