Protein degradation and peptide release from milk proteins in human jejunum. Comparison with in vitro gastrointestinal simulation - AgroParisTech Accéder directement au contenu
Article Dans Une Revue Food Chemistry Année : 2018

Protein degradation and peptide release from milk proteins in human jejunum. Comparison with in vitro gastrointestinal simulation

Résumé

Human jejunal digests after oral ingestion of casein and whey protein were collected by a nasogastric tube and protein degradation and peptide release was compared with that found in the digests of the same substrates using a standardised protocol. No intact casein was detected in the jejunal nor in the in vitro samples taken during the intestinal phase, while β-lactoglobulin was found in one hour-jejunal samples in agreement with the in vitro digestion. In vivo and in vitro digests showed comparable peptide profiles and high number of common sequences. A selective precipitation step was used to strengthen the identification of phosphorylated peptides. Most of the sequences found in jejunum, some of them not previously described, were also identified in the simulated digests. Common resistant regions to digestion were identified, revealing that the in vitro protocol constitutes a good approximation to the physiological gastrointestinal digestion of milk proteins.
Fichier non déposé

Dates et versions

hal-01769398 , version 1 (18-04-2018)

Identifiants

Citer

J. Sanchon, S. Tomé, B. Miralles, B. Hernández-Ledesma, D. Tome, et al.. Protein degradation and peptide release from milk proteins in human jejunum. Comparison with in vitro gastrointestinal simulation. Food Chemistry, 2018, 239, pp.486 - 494. ⟨10.1016/j.foodchem.2017.06.134⟩. ⟨hal-01769398⟩
110 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More