Article (Scientific journals)
Adding mucins to an in vitro batch fermentation model of the large intestine induces changes in microbial population isolated from porcine feces depending on the substrate
Tran, Thi Hanh Tham; Boudry, Christelle; Everaert, Nadia et al.
2016In FEMS Microbiology Ecology, 92 (2), p. 13
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Keywords :
mucins; in vitro model; intestinal fermentation; inulin; cellulose; microbiota
Abstract :
[en] Adding mucus to in vitro fermentation models of the large intestine showed that some genera, namely lactobacilli, are dependent on host-microbiota interactions and that they rely on mucosa layers to increase their activity. This study investigates whether this dependence on mucus is substrate-dependent and to which extend other genera are impacted by the presence of mucus. Inulin and cellulose were fermented in vitro by a fecal inoculum from pig in the presence or not of mucin-beads in order to compare fermentation patterns and bacterial communities. Mucins increased final gas production with inulin and shifted short-chain fatty acids molar ratios (P<0.001). QPCR analyses revealed that Lactobacillus spp. and Bifidobacterium spp. decreased with mucins, but Bacteroides spp. increased when inulin was fermented. A more in-depth community analysis indicated that the mucins increased Proteobacteria (0.55 vs. 0.25 %, P=0.013), Verrucomicrobia (5.25 vs. 0.03 %, P=0.032), Ruminococcaceae, Bacteroidaceae, and Akkermansia spp.. Proteobacteria (5.67 vs. 0.55 %, P<0.001) and Lachnospiraceae (33 vs. 10.4 %) were promoted in the mucuscompared to the broth, while Ruminococcaceae decreased. The introduction of mucins affected many microbial genera and fermentation patterns, but from PCA results, the impact of mucus was independent from the fermentation substrate.
Disciplines :
Veterinary medicine & animal health
Animal production & animal husbandry
Author, co-author :
Tran, Thi Hanh Tham  ;  Université de Liège - ULiège > Doct. sc. agro. & ingé. biol.
Boudry, Christelle  
Everaert, Nadia ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Zootechnie
Thewis, André ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Zootechnie
Portetelle, Daniel ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Microbiologie et génomique
Daube, Georges  ;  Université de Liège > Département de sciences des denrées alimentaires (DDA) > Microbiologie des denrées alimentaires
Nezer, Carine
Taminiau, Bernard  ;  Université de Liège > Département de sciences des denrées alimentaires (DDA) > Microbiologie des denrées alimentaires
Bindelle, Jérôme  ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Zootechnie
 These authors have contributed equally to this work.
Language :
English
Title :
Adding mucins to an in vitro batch fermentation model of the large intestine induces changes in microbial population isolated from porcine feces depending on the substrate
Publication date :
2016
Journal title :
FEMS Microbiology Ecology
ISSN :
0168-6496
eISSN :
1574-6941
Publisher :
Blackwell Publishing, Oxford, United Kingdom
Volume :
92
Issue :
2
Pages :
13
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 05 January 2016

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