Mineral Milk – milk protein and uptake of zinc, iron and magnesium
Magnesium, zinc and iron are vital minerals for normal growth and development, and insufficient uptake of these has serious health consequences. The aim of the project is to investigate how milk protein in the form of whey protein concentrates, specific purified milk protein ingredients such as osteopontin and alphalactalbumin, as well as protein in a complex milk matrix can increase bioavailability and uptake of these minerals.
By: Grith Mortensen
The purpose is not to investigate the uptake of milk's own content of minerals, but how milk protein can increase bioavailability and uptake of minerals ingested along with milk protein, either in the form of fortified products, supplements or in other dietary items where the minerals are naturally occuring.
The project includes simulated gastrointestinal tract digestion of the milk protein in connection with measuring uptake of the minerals in and over the intestinal cells. In addition, the project investigates how expression of important factors for binding, uptake and storage of the specific minerals in intestinal cells is affected by milk protein. Likewise, the project includes a comparison of the contribution of milk protein and vegetable protein to the intestinal uptake of the minerals.This will provide measures of the ability of milk protein to increase the uptake of important minerals compared to e.g. plant drinks.
Understanding how known as well as new milk protein components can increase the bioavailability of essential minerals in the diet is important for the entire dairy industry in developing new products and documenting the role of milk in a healthy diet.
Project period: January 2022 - December 2023
Budget: 3.888.ooo DKK
Financing: Milk Levy Fund and Aarhus University
Project manager: Esben Skipper Sørensen
Institution: Department of Molecular Biology & Genetics, Aarhus University
Participants: Department of Molecular Biology & Genetics, Aarhus University