Abstract: The present invention provides a model to study the (regulation of) expression, synthesis and/or secretion of ghrelin in humans. Ghrelin is a hormone that signals appetite and stimulates food intake. The model of this invention comprises the culture of a cell line derived from a human gastric adenocarcinoma that is capable of producing ghrelin, said model also comprising a medium suitable for growing said cell line. The invention also provides a method for assessing ghrelin production, wherein a cell line derived from a human gastric adenocarcinoma can synthesize and secrete ghrelin when grown in a suitable medium. This method can be used as screening tool when measuring the effect of test compounds on the production of ghrelin. Such screening tool allows for testing a large number of compounds in order to develop drugs or food ingredients that help to control food intake by regulating appetite.

Abstract: The invention provides the use of a whey protein hydrolysate in an edible composition the whey protein hydrolysate being able to induce the cellular release of glucagon-like-peptides and cholecystokinins and/or increasing glucose uptake in target tissues, wherein the whey protein hydrolysate regulates blood glucose levels or results in, or is used for, improving or preventing decline in mental performance and/or for providing a sustained feeling of energy and/or for maintaining or providing a feeling of well-being during the post-prandial period in a subject consuming the composition.

Abstract: The invention provides the use of a whey protein and/or whey protein hydrolysate which stimulate the cellular release of the satiety peptides choleocystokinin and glucagon-like-peptide in the preparation of edible compositions. The edible compositions can be used to control body weight and have beneficial effects on satiety. Edible compositions are also provided.