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Montoya CA, Rohleff I, Hodgkinson S, Stoklosinski HM, Moughan PJ. Type and Amount of Dietary Fiber Influence the Hindgut Synthesis of Organic Acids from Fermentable Material of Both Total and Nondietary Origin in a Pig Model of the Adult Human. J Nutr 2023; 153:2868-2877. [PMID: 37604383 DOI: 10.1016/j.tjnut.2023.08.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 07/25/2023] [Accepted: 08/16/2023] [Indexed: 08/23/2023] Open
Abstract
BACKGROUND Organic acid synthesis by the hindgut microbiota is commonly believed to be mainly of fermentable material of dietary origin. OBJECTIVE This study aimed to determine the hindgut organic acid synthesis from fermentable material of dietary (mainly fiber) or nondietary origin for different types and amounts of dietary fiber in growing pigs used as a model for adult humans. METHOD Seven fiber-containing diets were formulated: 4 fiber types (cellulose, gum acacia, oligofructose, and pectin) at 6% of the diet and 3 (gum acacia, oligofructose, and pectin) at 3% as the sole fiber source. Ileal cannulated female pigs (n = 14; Landrace/Large white) were fed the fiber-containing diets (n = 6 pigs/diet) for 11 days (fiber phase) followed by 3 days on a fiber-free diet (fiber-free phase), using a replicated Youden square. Ileal digesta for each phase were collected and fermented in vitro with a pooled fecal microbial inoculum prepared from feces collected during the fiber phase to determine the organic acids synthesized from fermentable material of dietary (fiber phase) and nondietary (fiber-free phase) origins. RESULTS The total amount of each individual organic acid synthesized during in vitro hindgut fermentation differed (P ≤ 0.05) across the types and amounts of dietary fiber intake. For example, the amount of acetate was 3.6-fold higher (P ≤ 0.05) for pigs fed the 6% pectin-containing diet than those fed the 6% oligofructose-containing diet. The nondietary substrate contributed between 36% (hexanoate) and 70% (succinate) to the total hindgut organic acid synthesis. The adaptation to the different fiber-containing diets led to different amounts of some organic acids of nondietary origin. CONCLUSIONS The total amount of organic acids synthesized in the hindgut by the resident microbes is influenced by the type and amount of dietary fiber consumed. This study quantifies the interaction between both dietary and nondietary fermentable materials in hindgut fermentation.
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Affiliation(s)
- Carlos A Montoya
- Smart Foods & Bioproducts, AgResearch, Te Ohu Rangahau Kai, Massey University, Palmerston North, New Zealand; Riddet Institute, Massey University, Te Ohu Rangahau Kai Facility, Palmerston North, New Zealand.
| | - Ina Rohleff
- Riddet Institute, Massey University, Te Ohu Rangahau Kai Facility, Palmerston North, New Zealand
| | - Suzanne Hodgkinson
- Riddet Institute, Massey University, Te Ohu Rangahau Kai Facility, Palmerston North, New Zealand
| | | | - Paul J Moughan
- Riddet Institute, Massey University, Te Ohu Rangahau Kai Facility, Palmerston North, New Zealand
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Parkar SG, Rosendale DI, Stoklosinski HM, Jobsis CMH, Hedderley DI, Gopal P. Complementary Food Ingredients Alter Infant Gut Microbiome Composition and Metabolism In Vitro. Microorganisms 2021; 9:microorganisms9102089. [PMID: 34683410 PMCID: PMC8540059 DOI: 10.3390/microorganisms9102089] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 09/24/2021] [Accepted: 09/30/2021] [Indexed: 12/12/2022] Open
Abstract
We examined the prebiotic potential of 32 food ingredients on the developing infant microbiome using an in vitro gastroileal digestion and colonic fermentation model. There were significant changes in the concentrations of short-chain fatty-acid metabolites, confirming the potential of the tested ingredients to stimulate bacterial metabolism. The 16S rRNA gene sequencing for a subset of the ingredients revealed significant increases in the relative abundances of the lactate- and acetate-producing Bifidobacteriaceae, Enterococcaceae, and Lactobacillaceae, and lactate- and acetate-utilizing Prevotellaceae, Lachnospiraceae, and Veillonellaceae. Selective changes in specific bacterial groups were observed. Infant whole-milk powder and an oat flour enhanced Bifidobacteriaceae and lactic acid bacteria. A New Zealand-origin spinach powder enhanced Prevotellaceae and Lachnospiraceae, while fruit and vegetable powders increased a mixed consortium of beneficial gut microbiota. All food ingredients demonstrated a consistent decrease in Clostridium perfringens, with this organism being increased in the carbohydrate-free water control. While further studies are required, this study demonstrates that the selected food ingredients can modulate the infant gut microbiome composition and metabolism in vitro. This approach provides an opportunity to design nutrient-rich complementary foods that fulfil infants’ growth needs and support the maturation of the infant gut microbiome.
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Parkar SG, Frost JKT, Rosendale D, Stoklosinski HM, Jobsis CMH, Hedderley DI, Gopal P. The sugar composition of the fibre in selected plant foods modulates weaning infants' gut microbiome composition and fermentation metabolites in vitro. Sci Rep 2021; 11:9292. [PMID: 33927231 PMCID: PMC8085221 DOI: 10.1038/s41598-021-88445-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 04/12/2021] [Indexed: 12/11/2022] Open
Abstract
Eight plant-based foods: oat flour and pureed apple, blackcurrant, carrot, gold- and green-fleshed kiwifruit, pumpkin, sweetcorn, were pre-digested and fermented with pooled inocula of weaning infants’ faecal bacteria in an in vitro hindgut model. Inulin and water were included as controls. The pre-digested foods were analysed for digestion-resistant fibre-derived sugar composition and standardised to the same total fibre concentration prior to fermentation. The food-microbiome interactions were then characterised by measuring microbial acid and gas metabolites, microbial glycosidase activity and determining microbiome structure. At the physiologically relevant time of 10 h of fermentation, the xyloglucan-rich apple and blackcurrant favoured a propiogenic metabolic and microbiome profile with no measurable gas production. Glucose-rich, xyloglucan-poor pumpkin caused the greatest increases in lactate and acetate (indicative of high fermentability) commensurate with increased bifidobacteria. Glucose-rich, xyloglucan-poor oats and sweetcorn, and arabinogalactan-rich carrot also increased lactate and acetate, and were more stimulatory of clostridial families, which are indicative of increased microbial diversity and gut and immune health. Inulin favoured a probiotic-driven consortium, while water supported a proteolytic microbiome. This study shows that the fibre-derived sugar composition of complementary foods may shape infant gut microbiome structure and metabolic activity, at least in vitro.
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Affiliation(s)
- Shanthi G Parkar
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 11600, Palmerston North, 4442, New Zealand.
| | - Jovyn K T Frost
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 11600, Palmerston North, 4442, New Zealand
| | - Doug Rosendale
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 11600, Palmerston North, 4442, New Zealand
| | - Halina M Stoklosinski
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 11600, Palmerston North, 4442, New Zealand
| | - Carel M H Jobsis
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 11600, Palmerston North, 4442, New Zealand
| | - Duncan I Hedderley
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 11600, Palmerston North, 4442, New Zealand
| | - Pramod Gopal
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 11600, Palmerston North, 4442, New Zealand. .,Riddet Institute, Massey University, Palmerston North, 4442, New Zealand.
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Bentley-Hewitt KL, Perrott M, Butts CA, Hedderley DI, Stoklosinski HM, Parkar SG. Influence of kiwifruit on gastric and duodenal inflammation-related gene expression in aspirin-induced gastric mucosal damage in rats. Sci Rep 2020; 10:13055. [PMID: 32747727 PMCID: PMC7400567 DOI: 10.1038/s41598-020-70006-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 07/20/2020] [Indexed: 12/12/2022] Open
Abstract
Kiwifruit (KF) contains bioactive compounds with potential anti-inflammatory properties. In this study, we investigated the protective effects of KF on gastric and duodenal damage induced by soluble aspirin in healthy rats. Sixty-four male Sprague Dawley rats were allocated to eight experimental treatments (n = 8) and the experimental diets were fed for 14 days ad libitum. The experimental diets were 20% fresh pureed KF (green-fleshed and gold-fleshed) or 10% glucose solution (control diet). A positive anti-inflammatory control treatment (ranitidine) was included. At the end of the 14-day feeding period, the rats were fasted overnight, and the following morning soluble aspirin (400 mg/kg aspirin) or water (control) was administered by oral gavage. Four hours after aspirin administration, the rats were euthanized and samples taken for analysis. We observed no significant ulcer formation or increase in infiltration of the gastric mucosal inflammatory cells in the rats with the aspirin treatment. Despite this, there were significant changes in gene expression, such as in the duodenum of aspirin-treated rats fed green KF where there was increased expression of inflammation-related genes NOS2 and TNF-alpha. We also observed that gold and green KF diets had a number of contrasting effects on genes related to inflammation and gastro-protective effects.
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Affiliation(s)
- Kerry L Bentley-Hewitt
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 11600, Palmerston North, 4442, New Zealand.
| | - Matthew Perrott
- School of Veterinary Science, Massey University, Palmerston North, New Zealand
| | - Christine A Butts
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 11600, Palmerston North, 4442, New Zealand
| | - Duncan I Hedderley
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 11600, Palmerston North, 4442, New Zealand
| | - Halina M Stoklosinski
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 11600, Palmerston North, 4442, New Zealand
| | - Shanthi G Parkar
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 11600, Palmerston North, 4442, New Zealand
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Kim CC, Kelly WJ, Patchett ML, Tannock GW, Jordens Z, Stoklosinski HM, Taylor JW, Sims IM, Bell TJ, Rosendale DI. Monoglobus pectinilyticus gen. nov., sp. nov., a pectinolytic bacterium isolated from human faeces. Int J Syst Evol Microbiol 2017; 67:4992-4998. [PMID: 29039307 DOI: 10.1099/ijsem.0.002395] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A novel anaerobic pectinolytic bacterium (strain 14T) was isolated from human faeces. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain 14T belonged to the family Ruminococcaceae, but was located separately from known clostridial clusters within the taxon. The closest cultured relative of strain 14T was Acetivibrio cellulolyticus (89.7 % sequence similarity). Strain 14T shared ~99 % sequence similarity with cloned 16S rRNA gene sequences from uncultured bacteria derived from the human gut. Cells were Gram-stain-positive, non-motile cocci approximately 0.6 µm in diameter. Strain 14T fermented pectins from citrus peel, apple, and kiwifruit as well as carbohydrates that are constituents of pectins and hemicellulose, such as galacturonic acid, xylose, and arabinose. TEM images of strain 14T, cultured in association with plant tissues, suggested extracellular fibrolytic activity associated with the bacterial cells, forming zones of degradation in the pectin-rich regions of middle lamella. Phylogenetic and phenotypic analysis supported the differentiation of strain 14T as a novel genus in the family Ruminococcaceae. The name Monoglobus pectinilyticus gen. nov., sp. nov. is proposed; the type strain is 14T (JCM 31914T=DSM 104782T).
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Affiliation(s)
- Caroline C Kim
- Institute of Fundamental Sciences, Massey University, Palmerston North 4442, New Zealand.,The New Zealand Institute for Plant and Food Research, Palmerston North 4474, New Zealand
| | | | - Mark L Patchett
- Institute of Fundamental Sciences, Massey University, Palmerston North 4442, New Zealand
| | - Gerald W Tannock
- Department of Microbiology and Immunology, Microbiome Otago, University of Otago, Dunedin 9016, New Zealand
| | - Z Jordens
- Institute of Fundamental Sciences, Massey University, Palmerston North 4442, New Zealand
| | - Halina M Stoklosinski
- The New Zealand Institute for Plant and Food Research, Palmerston North 4474, New Zealand
| | - Jordan W Taylor
- Institute of Fundamental Sciences, Massey University, Palmerston North 4442, New Zealand
| | - Ian M Sims
- Ferrier Research Institute, Victoria University of Wellington, Gracefield Research Centre, Lower Hutt 5040, New Zealand
| | - Tracey J Bell
- Ferrier Research Institute, Victoria University of Wellington, Gracefield Research Centre, Lower Hutt 5040, New Zealand
| | - Douglas I Rosendale
- The New Zealand Institute for Plant and Food Research, Palmerston North 4474, New Zealand
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Butts CA, Paturi G, Tavendale MH, Hedderley D, Stoklosinski HM, Herath TD, Rosendale D, Roy NC, Monro JA, Ansell J. The fate of (13)C-labelled and non-labelled inulin predisposed to large bowel fermentation in rats. Food Funct 2016; 7:1825-32. [PMID: 26778667 DOI: 10.1039/c5fo01056j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The fate of stable-isotope (13)C labelled and non-labelled inulin catabolism by the gut microbiota was assessed in a healthy rat model. Sprague-Dawley male rats were randomly assigned to diets containing either cellulose or inulin, and were fed these diets for 3 days. On day (d) 4, rats allocated to the inulin diet received (13)C-labelled inulin. The rats were then fed the respective non-labelled diets (cellulose or inulin) until sampling (d4, d5, d6, d7, d10 and d11). Post feeding of (13)C-labelled substrate, breath analysis showed that (13)C-inulin cleared from the host within a period of 36 hours. Faecal (13)C demonstrated the clearance of inulin from gut with a (13)C excess reaching maximum at 24 hours (d5) and then declining gradually. There were greater variations in caecal organic acid concentrations from d4 to d6, with higher concentrations of acetic, butyric and propionic acids observed in the rats fed inulin compared to those fed cellulose. Inulin influenced caecal microbial glycosidase activity, increased colon crypt depth, and decreased the faecal output and polysaccharide content compared to the cellulose diet. In summary, the presence of inulin in the diet positively influenced large bowel microbial fermentation.
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Affiliation(s)
- Christine A Butts
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 11600, Palmerston North 4442, New Zealand.
| | - Gunaranjan Paturi
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 92169, Auckland 1142, New Zealand
| | | | - Duncan Hedderley
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 11600, Palmerston North 4442, New Zealand.
| | - Halina M Stoklosinski
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 11600, Palmerston North 4442, New Zealand.
| | - Thanuja D Herath
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 11600, Palmerston North 4442, New Zealand.
| | - Douglas Rosendale
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 11600, Palmerston North 4442, New Zealand.
| | - Nicole C Roy
- AgResearch Grasslands, Palmerston North 4442, New Zealand and Riddet Institute, Massey University, Palmerston North 4442, New Zealand and Gravida: National Centre for Growth and Development, The University of Auckland, Auckland 1142, New Zealand
| | - John A Monro
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 11600, Palmerston North 4442, New Zealand. and Riddet Institute, Massey University, Palmerston North 4442, New Zealand
| | - Juliet Ansell
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 11600, Palmerston North 4442, New Zealand. and Riddet Institute, Massey University, Palmerston North 4442, New Zealand
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