Abstract: The present invention relates to an in vitro method for predicting the in vivo glycaemic response to carbohydrates in a food. Provided is a method wherein a food is digested in vitro in more than one compartment. Also provided is the use of such a method for determining the suitability of a food for a subject who would benefit from a normalization of blood glucose levels.

Abstract: A reactor system suitable in particular for a model of a gastrointestinal tract comprises one or more units (1), each having two or more pressure chambers (2, 3) and in each of the pressure chambers a hose (5) made of flexible material and open at both ends, which hoses are fixed with their ends sealed in such a way that the spaces (6) between the wall of the pressure chambers and the hoses are closed. Connectors (8, 9) are also present for supplying a gas or liquid to and discharging it from the spaces (6) between the wall of the pressure chambers and the hoses, and couplers are present for coupling the pressure chambers to each other and/or to end pieces or intermediate pieces (4). Finally, connectors (10, 11) are present in the end pieces or intermediate pieces for supplying constituents to and discharging them from the hoses.