Spatial-temporal mapping of the intra-gastric pepsin concentration and proteolysis in pigs fed egg white gels - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Access content directly
Journal Articles Food Chemistry Year : 2022

Spatial-temporal mapping of the intra-gastric pepsin concentration and proteolysis in pigs fed egg white gels

Abstract

While there is a consensus that food structure affects food digestion, the underlying mechanisms remain poorly understood. A previous experiment in pigs fed egg white gels of same composition but different structures evidenced such effect on food gastric disintegration. In this study, we detailed the consequences on intra-gastric pH, pepsin concentration and proteolysis by sampling throughout the stomach over 6 h digestion. Subsequent amino acid absorption was investigated as well by blood sampling. While acidification was almost homogeneous after 6 h digestion regardless of the gel, pepsin distribution never became uniform. Pepsin started to accumulate in the pylorus/antrum region before concentrating in the body stomach beyond 4 h, time from which proteolysis really started. Interestingly, the more acidic and soft gel resulted in a soon (60 min) increase in proteolysis, an earlier and more intense peak of plasmatic amino acids, and a final pepsin concentration three times higher than with the other gels.
Fichier principal
Vignette du fichier
1-s2.0-S0308814622010949-main.pdf (2.51 Mo) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-03662515 , version 1 (09-05-2022)

Licence

Attribution - NonCommercial - NoDerivatives

Identifiers

Cite

Francoise Nau, Steven Le Feunteun, Yann Le Gouar, Gwénaële Henry, Maryvonne Pasco, et al.. Spatial-temporal mapping of the intra-gastric pepsin concentration and proteolysis in pigs fed egg white gels. Food Chemistry, 2022, 389, pp.133132. ⟨10.1016/j.foodchem.2022.133132⟩. ⟨hal-03662515⟩
44 View
20 Download

Altmetric

Share

Gmail Facebook X LinkedIn More