Fermentation of feruloyl and non-feruloyl xylooligosaccharides by mixed fecal cultures of human and cow: a comparative study in vitro
| Autor: | Gudipati Muralikrishna, Monika Krueger, Gabriele Dobleit, Herbert Fuhrmann, Sandra Schwarz |
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| Rok vydání: | 2011 |
| Předmět: |
Arabinose
chemistry.chemical_classification Prebiotic medicine.medical_treatment food and beverages General Chemistry Biology Xylose Biochemistry Industrial and Manufacturing Engineering Fecal coliform chemistry.chemical_compound Lactulose fluids and secretions chemistry Galactose medicine Monosaccharide Fermentation Food Science Biotechnology medicine.drug |
| Zdroj: | European Food Research and Technology. 232:601-611 |
| ISSN: | 1438-2385 1438-2377 |
| DOI: | 10.1007/s00217-010-1422-4 |
| Popis: | For the first time, a comparative study was undertaken with respect to the fermentation of (a) monosaccharides (glucose, galactose, arabinose, and xylose); (b) disaccharide (lactulose); (c) Jerusalem artichoke; (d) xylooligosaccharides (XO); and (e) feruloyl xylooligosaccharides (FXO) by mixed fecal cultures of human and cow. Among monosaccharides, arabinose and xylose exhibited prebiotic properties, and among these arabinose was found to be a better substrate than xylose. Glucose and galactose did not have any impact with respect to either increase or decrease in different bacterial populations present in both human and cow feces and liberated very small amounts of SCFA indicating them to be the least prebiotic among all the substrates tried. Both lactulose and Jerusalem artichoke increased the lactobacilli and bifidobacteria in pooled fecal cultures of human and cow. Bovine fecal bacteria utilized XO and FXO more effectively than human fecal bacteria as indicated by relatively high levels of the cell wall–degrading enzyme activities. Growth of different bacterial populations was monitored by the fluorescent in situ hybridization method at 12 and 24 h. XO increased the growth of lactobacilli and bifidobacteria and decreased the growth of Bacteriodes and clostridia, whereas FXO increased the growth of lactobacilli in cow fecal cultures. In human fecal cultures, FXO promoted the growth of bifidobacteria, but to a lesser extent compared with cow fecal bacteria. Quantitative variations were observed with respect to the profile of short-chain fatty acids liberated in the fecal culture filtrates of human and cow grown on XO and FXO. |
| Databáze: | OpenAIRE |
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