Satiating effect of a sodium caseinate hydrolysate and its fate in the upper gastrointestinal tract

Autor: Alina Kondrashina, Christine Bruen, Brian McGrath, Brian Murray, Triona McCarthy, Harriet Schellekens, Stefan Buzoianu, John F. Cryan, Alan L. Kelly, Paul L.H. McSweeney, Peadar Lawlor, Linda Giblin
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Journal of Functional Foods, Vol 49, Iss , Pp 306-313 (2018)
Druh dokumentu: article
ISSN: 1756-4646
DOI: 10.1016/j.jff.2018.08.035
Popis: Previously we identified a sodium caseinate (NaCas) hydrolysate, LFC25, which significantly increased secretion of satiety hormone glucagon-like peptide-1 (GLP-1) in vitro and reduced food intake in mice when administered intraperitoneally. This study investigates whether LFC25, administered orally, promotes GLP-1 secretion and/or reduces food intake in vivo. Over an 8-hour period, mice received LFC25 by oral gavage had similar food intake to mice received NaCas. Postprandial blood glucose, plasma active GLP-1, amino acids, insulin and food consumed at the next meal were not significantly different in pigs that consumed LFC25 compared to NaCas in a dairy beverage, at a dosage relevant for human consumption. Simulated in vitro gastro-duodenal digestion of LFC25 revealed a significant reduction in bioactivity. In contrast, the harsh conditions of the upper gut appear to functionalize intact NaCas as a GLP-1 secretagogue. In conclusion, LFC25 will need enteric protection to be used as a food ingredient for satiety.
Databáze: Directory of Open Access Journals