A1 Refereed original research article in a scientific journal
Mastication-induced release of compounds from rye and wheat breads to saliva
Authors: Pentikäinen S, Koistinen V, Kolehmainen M, Poutanen K, Hanhineva K, Aura AM
Publication year: 2019
Journal: Food Chemistry
Journal name in source: Food chemistry
Journal acronym: Food Chem
Volume: 270
First page : 502
Last page: 508
Number of pages: 7
ISSN: 0308-8146
eISSN: 1873-7072
DOI: https://doi.org/10.1016/j.foodchem.2018.07.110
Abstract
Mastication initiates digestion, disintegrating food structure and mixing it with saliva. This study aimed to provide understanding about the first step of bread digestion by exploring release of compounds from bread matrix during mastication. Furthermore, the aim was to identify compound groups that differentiate rye and wheat breads. Fifteen participants masticated whole-meal rye bread, endosperm rye bread, endosperm rye bread with added gluten and wheat bread. The masticated samples were studied with non-targeted LC-MS metabolic profiling. A great number of compounds were released from bread matrices in mastication, and the identified compounds differed largely between bread types. Specifically, rye bread samples were characterized by a greater release of peptides and amino acids, whereas sugars and nucleosides were characteristic for wheat bread. These compounds could potentially act as signal molecules in the alimentary tract and may explain, at least partly, the postprandial physiological effects of the breads identified in earlier studies.
Mastication initiates digestion, disintegrating food structure and mixing it with saliva. This study aimed to provide understanding about the first step of bread digestion by exploring release of compounds from bread matrix during mastication. Furthermore, the aim was to identify compound groups that differentiate rye and wheat breads. Fifteen participants masticated whole-meal rye bread, endosperm rye bread, endosperm rye bread with added gluten and wheat bread. The masticated samples were studied with non-targeted LC-MS metabolic profiling. A great number of compounds were released from bread matrices in mastication, and the identified compounds differed largely between bread types. Specifically, rye bread samples were characterized by a greater release of peptides and amino acids, whereas sugars and nucleosides were characteristic for wheat bread. These compounds could potentially act as signal molecules in the alimentary tract and may explain, at least partly, the postprandial physiological effects of the breads identified in earlier studies.
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