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Issue 5, 2020
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Evaluation of the impact of a rat small intestinal extract on the digestion of four different functional fibers

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Abstract

The degree of digestion, modulated by rat small intestinal extract on different functional fibers was investigated. In general, inulin-type fructans and fructooligosaccharides were the most resistant to the enzymatic digestion. Results evidenced the high-resistance of fructosyl-fructose bonds. This fits well with the concept of prebiotic carbohydrates. However, the mixture of melibiose, manninotriose and verbascotetraose (α-GOS) from peas, with a considerably lower molecular weight (0.6 kDa) than the fructans studied, were highly digested (61.2%). Interestingly, the Gal-(1 → 6)-Gal bonds present into the manninotriose and verbascotetraose were more prone to be hydrolyzed than Gal-(1 → 6)-Glc (melibiose). However, when melibiose was the only disaccharide present in the reaction mixture, the hydrolysis was also high (67.7%). The use of small intestinal enzymatic preparations is a realistic approximation to evaluate the digestion of different carbohydrates, thus, showing that recognized non-digestible carbohydrates can also be partially digested.

Graphical abstract: Evaluation of the impact of a rat small intestinal extract on the digestion of four different functional fibers

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Article information


Submitted
27 Jan 2020
Accepted
20 Apr 2020
First published
20 Apr 2020

This article is Open Access

Food Funct., 2020,11, 4081-4089
Article type
Paper

Evaluation of the impact of a rat small intestinal extract on the digestion of four different functional fibers

P. Gallego-Lobillo, A. Ferreira-Lazarte, O. Hernández-Hernández, A. Montilla and M. Villamiel, Food Funct., 2020, 11, 4081
DOI: 10.1039/D0FO00236D

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