4.4 Article

The role of food structure in gastric-emptying rate, absorption and metabolism

Journal

PROCEEDINGS OF THE NUTRITION SOCIETY
Volume -, Issue -, Pages -

Publisher

CAMBRIDGE UNIV PRESS
DOI: 10.1017/S0029665123003609

Keywords

In vitro digestion; Functional foods; Non-communicable disease; Digestion kinetics

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This article discusses non-communicable diseases related to obesity and poor diet, and introduces the driving factors for the development of cheap and palatable functional foods. The importance of using in vitro models for research is emphasized, and the current need for further improvement in this field is pointed out.
The high levels of non-communicable diseases such as CVD and type 2 diabetes mellitus are linked to obesity and poor diet. This continuing emphasis on health in relation to food is proving a powerful driver for the development of cheap but palatable and more functional foods. However, the efficacy of such foods is often hard to prove in human subjects. Thus, a suite of tools has been developed including in silico and in vitro simulations and animal models. Although animal models offer physiologically relevant platforms for research, their use for experimentation is problematic for consumers. Thus, in vitro methods such as Infogest protocols have been developed to provide digestion endpoints or even an indication of the kinetics of digestion. These protocols have been validated for a range of food systems but they still miss the final absorption step. This review discusses the use of such in vitro models and what further steps need to be included to make the bioaccessibility determination more relevant to bioavailability and human health.

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