Article (Scientific journals)
The effect of hydrodynamic conditions on the monogastric-like in vitro digestion of maize flours dried at different temperatures
Huart, François; Peclers, N.; Bera, François et al.
2020In LWT, 120
Peer reviewed
 

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Keywords :
Digestion; Drying; Hydrodynamic; Maize; Mixing; Sedimentation; Sludge digestion; Starch; Different speed; Enzymatic digestions; Hydrodynamic conditions; In-vitro digestions; In-vitro models; Rheological property; Thermal history; Hydrodynamics
Abstract :
[en] The effect of hydrodynamic conditions on the in vitro digestion of two maize varieties (flint-dent and flint maize), dried at different temperatures (54 °C, 90 °C or 130 °C), was assessed. During the digestion assay, maize flours were mixed using either gentle agitation (a shaking bath) or rotational agitation at four different speeds. Increasing rotational agitation gradually increased the digestibility of the in vitro dry matter (IVDMD) and of starch (IVSD) by 15 and 20%, respectively, and also affected the rate of starch amylolysis. The increase in digestion with the mixing rate was modulated by the thermal history suffered by the feedstuff materials. The variability introduced by flour thermal histories makes it difficult to compare the digestibility of such materials of unknown origin without the standardization of mixing procedures. Flour thermal history also results in different rheological properties of samples, with potential implications for enzymatic digestion that current static in vitro protocols are not able to reproduce. In order to improve the predictive quality of static in vitro models and for a reliable comparison of the digestibility of foods and feedstuffs, hydrodynamic and mixing procedures need to be optimized and standardized. © 2019 Elsevier Ltd
Disciplines :
Animal production & animal husbandry
Author, co-author :
Huart, François ;  Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > SMARTECH
Peclers, N.;  University of Liège, Gembloux Agro-Bio Tech, Precision Livestock and Nutrition, Passage des Déportés, 2, Gembloux, B-5030, Belgium
Bera, François ;  Université de Liège - ULiège > Département GxABT > Département GxABT
Beckers, Yves  ;  Université de Liège - ULiège > Département GxABT > Ingénierie des productions animales et nutrition
Malumba Kamba, Paul  ;  Care FoodIsLife, Terra Teaching and Research Centre, University of Liège, Gembloux Agro-Bio Tech, Avenue de la Faculté 2B, Gembloux, B-5030, Belgium
Language :
English
Title :
The effect of hydrodynamic conditions on the monogastric-like in vitro digestion of maize flours dried at different temperatures
Publication date :
2020
Journal title :
LWT
ISSN :
0023-6438
Publisher :
Academic Press
Volume :
120
Peer reviewed :
Peer reviewed
Funders :
SPW DG03-DGARNE - Service Public de Wallonie. Direction Générale Opérationnelle Agriculture, Ressources naturelles et Environnement [BE]
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since 27 August 2020

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