Effects of Resistant Starch Infusion, Solely and Mixed with Xylan or Cellulose, on Gut Microbiota Composition in Ileum-Cannulated Pigs

Fermentation of dietary fiber (DF) is beneficial for gut health, but its prebiotic effects are often impeded in the distal large intestine because of the fast degradation of fermentable substrates. One way to enhance the prebiotic effect of DF is to deliver fibers to the lower parts of the gut, whic...

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Main Authors: Yaowen Zhang, Yu Bai, Zhenyu Wang, Hao Ye, Dandan Han, Jinbiao Zhao, Junjun Wang, Defa Li
Format: Article
Language:English
Published: MDPI AG 2024-02-01
Series:Microorganisms
Subjects:
Online Access:https://www.mdpi.com/2076-2607/12/2/356
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author Yaowen Zhang
Yu Bai
Zhenyu Wang
Hao Ye
Dandan Han
Jinbiao Zhao
Junjun Wang
Defa Li
author_facet Yaowen Zhang
Yu Bai
Zhenyu Wang
Hao Ye
Dandan Han
Jinbiao Zhao
Junjun Wang
Defa Li
author_sort Yaowen Zhang
collection DOAJ
description Fermentation of dietary fiber (DF) is beneficial for gut health, but its prebiotic effects are often impeded in the distal large intestine because of the fast degradation of fermentable substrates. One way to enhance the prebiotic effect of DF is to deliver fibers to the lower parts of the gut, which can be achieved by mixing different kinds of fiber. Therefore, in the present study, an ileum-cannulated pig model was employed to investigate the fermentation influence in the large intestine by infusing resistant starch solely (RS, fast fermentable fiber) and mixing with other fibers (xylan or cellulose). Twenty-four ileum-cannulated growing pigs were divided into four groups: one control group receiving saline ileal infusions and three experimental groups infused with RS, RS with xylan, or RS with cellulose. Fecal and plasma samples were analyzed for gut microbiota composition, short-chain fatty acids (SCFAs), and blood biochemistry. Results indicated no significant differences between the RS and control group for the microbiome and SCFA concentration (<i>p</i> > 0.05). However, RS combined with fibers, particularly xylan, resulted in enhanced and prolonged fermentation, marked by an increase in <i>Blautia</i> and higher lactate and acetate production (<i>p</i> < 0.05). In contrast, RS with cellulose infusion enriched bacterial diversity in feces (<i>p</i> < 0.05). Blood biochemistry parameters showed no significant differences across groups (<i>p</i> > 0.05), though a trend of increased glucose levels was noted in the treatment groups (<i>p</i> < 0.1). Overall, RS alone had a limited impact on the distal hindgut microbiota due to rapid fermentation in the proximal gut, whereas combining RS with other fibers notably improved gut microecology by extending the fermentation process.
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spelling doaj.art-28ce0f27a9f94073bc9a453f98e02e4f2024-02-23T15:28:19ZengMDPI AGMicroorganisms2076-26072024-02-0112235610.3390/microorganisms12020356Effects of Resistant Starch Infusion, Solely and Mixed with Xylan or Cellulose, on Gut Microbiota Composition in Ileum-Cannulated PigsYaowen Zhang0Yu Bai1Zhenyu Wang2Hao Ye3Dandan Han4Jinbiao Zhao5Junjun Wang6Defa Li7State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, ChinaState Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, ChinaState Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, ChinaState Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, ChinaState Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, ChinaState Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, ChinaState Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, ChinaState Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, ChinaFermentation of dietary fiber (DF) is beneficial for gut health, but its prebiotic effects are often impeded in the distal large intestine because of the fast degradation of fermentable substrates. One way to enhance the prebiotic effect of DF is to deliver fibers to the lower parts of the gut, which can be achieved by mixing different kinds of fiber. Therefore, in the present study, an ileum-cannulated pig model was employed to investigate the fermentation influence in the large intestine by infusing resistant starch solely (RS, fast fermentable fiber) and mixing with other fibers (xylan or cellulose). Twenty-four ileum-cannulated growing pigs were divided into four groups: one control group receiving saline ileal infusions and three experimental groups infused with RS, RS with xylan, or RS with cellulose. Fecal and plasma samples were analyzed for gut microbiota composition, short-chain fatty acids (SCFAs), and blood biochemistry. Results indicated no significant differences between the RS and control group for the microbiome and SCFA concentration (<i>p</i> > 0.05). However, RS combined with fibers, particularly xylan, resulted in enhanced and prolonged fermentation, marked by an increase in <i>Blautia</i> and higher lactate and acetate production (<i>p</i> < 0.05). In contrast, RS with cellulose infusion enriched bacterial diversity in feces (<i>p</i> < 0.05). Blood biochemistry parameters showed no significant differences across groups (<i>p</i> > 0.05), though a trend of increased glucose levels was noted in the treatment groups (<i>p</i> < 0.1). Overall, RS alone had a limited impact on the distal hindgut microbiota due to rapid fermentation in the proximal gut, whereas combining RS with other fibers notably improved gut microecology by extending the fermentation process.https://www.mdpi.com/2076-2607/12/2/356resistant starchxylancellulosegut microbiotaSCFAlarge intestine fermentation
spellingShingle Yaowen Zhang
Yu Bai
Zhenyu Wang
Hao Ye
Dandan Han
Jinbiao Zhao
Junjun Wang
Defa Li
Effects of Resistant Starch Infusion, Solely and Mixed with Xylan or Cellulose, on Gut Microbiota Composition in Ileum-Cannulated Pigs
Microorganisms
resistant starch
xylan
cellulose
gut microbiota
SCFA
large intestine fermentation
title Effects of Resistant Starch Infusion, Solely and Mixed with Xylan or Cellulose, on Gut Microbiota Composition in Ileum-Cannulated Pigs
title_full Effects of Resistant Starch Infusion, Solely and Mixed with Xylan or Cellulose, on Gut Microbiota Composition in Ileum-Cannulated Pigs
title_fullStr Effects of Resistant Starch Infusion, Solely and Mixed with Xylan or Cellulose, on Gut Microbiota Composition in Ileum-Cannulated Pigs
title_full_unstemmed Effects of Resistant Starch Infusion, Solely and Mixed with Xylan or Cellulose, on Gut Microbiota Composition in Ileum-Cannulated Pigs
title_short Effects of Resistant Starch Infusion, Solely and Mixed with Xylan or Cellulose, on Gut Microbiota Composition in Ileum-Cannulated Pigs
title_sort effects of resistant starch infusion solely and mixed with xylan or cellulose on gut microbiota composition in ileum cannulated pigs
topic resistant starch
xylan
cellulose
gut microbiota
SCFA
large intestine fermentation
url https://www.mdpi.com/2076-2607/12/2/356
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