Fermentation Profiles of Wheat Dextrin, Inulin and Partially Hydrolyzed Guar Gum Using an in Vitro Digestion Pretreatment and in Vitro Batch Fermentation System Model
| Autor: | Ashok Hospattankar, Derek A. Timm, Joanne L. Slavin, Jackie A. Noack |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Dietary Fiber
in vitro fermentation Hydrolases Swine medicine.medical_treatment Galactans Polymerase Chain Reaction Mannans chemistry.chemical_compound Lactobacillus Plant Gums Amylase Food science Triticum Nutrition and Dietetics tolerance biology Short-chain fatty acid Inulin short-chain fatty acids prebiotic microbiota food and beverages Hydrogen-Ion Concentration Butyrates Digestion Gases lcsh:Nutrition. Foods and food supply lcsh:TX341-641 Models Biological Article Dextrins medicine Animals Humans Guar gum Prebiotic biology.organism_classification Fatty Acids Volatile Diet Gastrointestinal Tract Prebiotics chemistry Fermentation biology.protein Metagenome Bifidobacterium Food Science |
| Zdroj: | Nutrients; Volume 5; Issue 5; Pages: 1500-1510 Nutrients Nutrients, Vol 5, Iss 5, Pp 1500-1510 (2013) |
| ISSN: | 2072-6643 |
| DOI: | 10.3390/nu5051500 |
| Popis: | This study investigated the fermentation and microbiota profiles of three fibers, wheat dextrin (WD), partially hydrolyzed guar gum (PHGG), and inulin, since little is known about the effects of WD and PHGG on gut microbiota. A treatment of salivary amylase, pepsin, and pancreatin was used to better physiologic digestion. Fibers (0.5 g) were fermented in triplicate including a control group without fiber for 0, 4, 8, 12, and 24 h. Analysis of pH, gas volume, hydrogen and methane gases, and short chain fatty acid (SCFA) concentrations were completed at each time point. Quantitative polymerase chain reaction (qPCR) was used to measure Bifidobacteria and Lactobacillus CFUs at 24 h. WD produced the least gas during fermentation at 8, 12, and 24 h (P < 0.0001), while inulin produced the most by 8 h (P < 0.0001). Each fiber reached its lowest pH value at different time points with inulin at 8 h (mean ± SE) (5.94 ± 0.03), PHGG at 12 h (5.98 ± 0.01), and WD at 24 h (6.17 ± 0.03). All fibers had higher total SCFA concentrations compared to the negative control (P < 0.05) at 24 h. At 24 h, inulin produced significantly (P = 0.0016) more butyrate than WD with PHGG being similar to both. An exploratory microbial analysis (log10 CFU/µL) showed WD had CFU for Bifidobacteria (6.12) and Lactobacillus (7.15) compared with the control (4.92 and 6.35, respectively). Rate of gas production is influenced by fiber source and may affect tolerance in vivo. Exploratory microbiota data hint at high levels of Bifidobacteria for WD, but require more robust investigation to corroborate these findings. |
| Databáze: | OpenAIRE |
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